JP2003318869A - Radio equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable high quality radio communication even when interference waves exist in radio equipment in which radio frequency channels hop by every packet. <P>SOLUTION: Transmission digital voice data is stored in a plurality of transmission buffers 3 to 5 by dividing it by every fixed length and performing speed conversion to it, one transmission packet is generated by adding a packet synchronization word and a header to the packet by a packet generation part 8, the packet is modulated by a modulation part 9, converted into specific frequency by a transmission radio part 10 and transmitted via a transmission antenna 11. On the side of a receiver, reception digital voice data before speed conversion is defined by removing the packet synchronization word and the header by a packet separation part 18, speed conversion is performed to pieces of the reception digital voice data before speed conversion successively accumulated in a plurality of corresponding reception buffers 20 to 22 by control of a reception buffer control part 19, majority judgment is performed by every bit by a majority judgment part 23 and outputted as the respective pieces of digital voice data. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless device in which a transmission / reception frequency hops for each packet.

[0002]

2. Description of the Related Art With the recent development of digital wireless communication,
Various digital wireless communication systems have been standardized, corresponding products have been developed, and their spread is accelerating. However, many of the above digital wireless communication systems are standardized with a focus on network-based data communication,
Voice communication using that network is also possible,
In many cases, the quality is not considered so much. In particular, in the case of the Bluetooth standard, it is possible to add an error correction code to voice data, but if an environment in which an interference wave exists on the same frequency channel is assumed, its effect is almost negligible.

A conventional wireless device will be described below.
FIG. 41 is a block diagram of the wireless device, and FIG. 42 is a packet configuration diagram when no error correction code is added, and FIG.
FIG. 6 is a packet configuration diagram when an error correction code is added. Further, f (n) in FIGS. 42 and 43 indicates a frequency channel for transmitting / receiving a packet.

In FIG. 41, in the conventional wireless device, 1 is a microphone 1, 2 is a transmission codec (Compression / Decompression: compressor / decompressor, which converts analog voice data output from the microphone 1 into transmission digital voice data, hereinafter). "Codec2") 2. First, on the transmitter side, 3601 is a transmission buffer that performs division and speed conversion in order to put the transmission digital audio data output from the transmission Codec 2 into a packet for each fixed length. Reference numeral 8 is a packet generation unit for packetizing the transmission digital voice data, 9 is a modulation unit for modulating the transmission data, and 10 is a transmission radio unit for converting the data modulated by the modulation unit 9 into a specific radio frequency.

On the receiver side, 13 is a reception radio section for converting a reception signal into a baseband frequency, 14 is a demodulation section,
Reference numeral 15 is a data determination unit that determines the demodulated data. Reference numeral 16 is a packet synchronization word detection unit that detects a packet synchronization word from the reception data output from the data determination unit 15, reference numeral 17 is a reception packet control unit that performs control for dividing the reception data, and reference numeral 18 is packet synchronization for each packet. This is a packet division unit that removes words and headers. 36
Reference numeral 04 is a reception buffer that performs speed conversion on the output of the packet division unit 18. A reception codec 24 converts the reception digital voice data into analog voice data by an algorithm corresponding to the transmission Codec 2.

In this conventional radio apparatus, the analog voice data output from the microphone 1 is converted by the transmission codec 2 into transmission digital voice data by an appropriate algorithm, and the converted transmission digital voice data is packetized by the packet generator 8. To be done.

To explain this packetization in detail, the transmission packet control unit 6 sends a synchronization signal for packetization to the transmission buffer control unit 3602, and the transmission buffer control unit 3602 transmits the transmission digital voice stored in the transmission buffer 3601. The data is divided into fixed lengths and the speed is converted, and the divided transmission digital voice data is sent to the packet generator 8. Under the control of the transmission packet control unit 6, the packet generation unit 8 adds the packet synchronization word and the header to the divided transmission digital audio data sent from the transmission buffer 3601 and packetizes them. At the time of this packetization, there are two methods of not performing error correction coding as shown in FIG. 42 or performing error correction coding as shown in FIG.

The output of the packet generator 8 is modulated by the modulator 9, and the modulated data is converted to a specific radio frequency by the transmission radio unit 10 and transmitted as a radio wave by the transmission antenna 11.

The reception signal from the reception antenna 12 is converted into a baseband frequency by the reception radio section 13, and is demodulated by the demodulation section 14.
Demodulated by. The demodulated data is determined by the data determination unit 15. The packet synchronization word detection unit 16 detects a packet synchronization word from the received data output from the data determination unit 15, and the reception packet control unit 17 uses the packet synchronization word detection signal output from the packet synchronization word detection unit 16 as a basis. , Divide the received data. Packet division unit 18
Then, the packet synchronization word and the header are removed for each packet under the control of the reception packet control unit 17. Based on the signal from the reception packet control unit 17, the reception buffer control unit 3603 controls the reception buffer 3604 so that the output of the packet division unit 18 is speed-converted and the reception digital audio data is output. The reception digital audio data output from the reception buffer 3604 is the reception codec.
By 24, it is converted into analog voice data by an algorithm corresponding to the transmission Codec 2, and is output from the speaker 25 as a voice signal.

[0010]

In an environment in which an interference wave exists, one received packet may be affected by interference on the frequency channel, and a part or the whole packet may be erroneous. In Japanese Unexamined Patent Application Publication No. 8-125583, interference is generated by transmitting multiple packets of the same content on the transmitter side and determining the majority of bit data at the same position of the packets of the same content received multiple times on the receiving side. It describes how to deal with burst errors caused by. Further, Japanese Patent Application Laid-Open No. 6-224837 discloses that a transmitter side transmits a packet of the same content a plurality of times by adding an error code, and a receiving side selects a packet having no error.

When one frequency channel is continuously affected by an interference wave, voice noise is generated in the case of a packet structure in which no error correction code is added as shown in FIG. 42, and even shown in FIG. Even with such a packet structure to which an error correction code is added, it is considered inevitable that the frequency channel itself collides with the interference wave and becomes voice noise.

It is an object of the present invention to provide a wireless device capable of high quality wireless communication with reduced voice noise.

[0013]

A radio apparatus according to the present invention transmits and receives packets of the same content a plurality of times and makes a majority decision, a decision by selecting a highly reliable received packet, or a decision making use of maximum ratio combining. Is to do.

According to the present invention, it is possible to obtain a radio apparatus capable of performing high quality radio communication utilizing the time diversity and frequency diversity effects even in an environment where an interference wave exists.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is, in a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, on the transmitter side, transmission codec means for converting into transmission digital voice data. , A packet generation means for generating a transmission packet by adding packet synchronization word information to the header and a means for transmitting a packet having the same content a plurality of times, and the receiver side is provided with a packet synchronization word from the received data. Packet synchronization word detecting means for detecting, a plurality of receiving buffer means for individually storing data of a plurality of received packets of the same content, and a majority decision for majority decision of bit data at the same position of packets of the same content received a plurality of times The decision means and the digital voice data of the received packet selected by the majority decision means are transmitted to the transmission codec means. If the packet synchronization word can be normally detected in all received packets of the same content of a plurality of times, the majority decision determining means makes a majority decision of the outputs of the plurality of receiving buffer means. Output as received digital audio data, and if the packet synchronization word cannot be normally detected in one received packet of the same content received packets of a plurality of times, the received buffer means other than the received packet is stored in the receiving buffer means. Select one of them and output it as received digital audio data as it is, and if the packet sync word can be detected normally in one of the received packets of the same content multiple times, the received packet is accumulated. Select the output of the receiving buffer means that is output as it is as received digital audio data, If the packet sync word cannot be detected normally in all received packets with the same content several times, the packet sync word is used as a wireless device that makes a majority decision on the data of all packets and outputs it as received digital voice data. It is possible to exclude an unreliable received packet from a plurality of received packets as a target of the majority decision by using the error of 1. Therefore, the accuracy of the majority decision can be improved, the communication quality can be maintained, and there is a time diversity effect of selecting the strongest signal from among the signals having a time difference and a frequency diversity effect of selecting the frequency band receiving the strongest signal. It has an effect that high quality wireless communication is possible.

According to a fourth aspect of the present invention, the packet synchronization word detecting means outputs a packet synchronization word error detection signal when the packet synchronization word detecting means fails to detect the packet synchronization word at a predetermined position of the packet. The detection error notifying means and the average reception power means for averaging the instantaneous reception power obtained from the reception wireless means for each packet and outputting the average reception power are provided, and the majority decision means is a packet synchronization word for three same reception packets. If no error detection signal is input and the level difference between the instantaneous reception power and the average reception power is within a certain level, the outputs of the three reception buffer means are majority-judged and output as reception digital audio data, which is output three times. Input the packet sync word error detection signal in one received packet of the same received packet, or use the instantaneous received power and average When the level difference from the received power exceeds a certain level, the output of the receiving buffer means in which the received packets with the smaller level difference between the instantaneous received power and the average received power are accumulated is selected as received digital audio data. If the packet synchronization word error detection signal is input with two received packets of the same received packet that are output three times or the level difference between the instantaneous received power and the average received power exceeds a certain level, other than the corresponding received packets The output of the receiving buffer means in which the received packets are accumulated is selected and output as it is as the received digital voice data, and the packet synchronization word error detection signal is input by three received packets of the same received packet three times If the level difference between the received power and the average received power is above a certain level, mute or all receive buffers. 2. A majority decision of the output of the means is made or the output of the receiving buffer means corresponding to the received packet having a smaller level difference between the average received power and the instantaneous received power is selected and output as the received digital voice data. The wireless device according to claim 1, wherein an error of a packet synchronization word with respect to three received packets and a level difference between an instantaneous received power and an average received power are used as an index.
This has the effect of making it possible to exclude a received packet with low reliability from the target of majority decision.

According to a fifth aspect of the present invention, a radio frequency channel is changed for each transmitted / received packet, a header is included in a part of the packet, and an error detection code is added to the header. The machine side has a transmission codec means for converting into transmission digital voice data, a packet generation means for adding packet synchronization word information to a header to generate a transmission packet, and a means for transmitting a packet having the same content three times. , A packet synchronization word detection means for detecting a packet synchronization word from the received data, and a header error detection code error for outputting a header error detection code error detection signal when a header error detection code error is detected Notifying means, three receiving buffer means for storing data for each received packet, and the same packet of the same content received three times The majority decision means has a majority decision means for making a majority decision on the bit data at the position, and a reception codec means for converting the digital voice data of the received packet selected by the majority decision means by an algorithm corresponding to the transmission codec means. When the packet synchronization word error detection signal or the header error detection code error detection signal is not input in the same three received packets, the outputs of the three reception buffer means are majority-judged and output as reception digital voice data, When the packet synchronization word error detection signal or the header error detection code error detection signal is input in one reception packet of the same reception packets of three times, two reception buffer means in which reception packets other than the corresponding reception packet are accumulated. Select one from the output and receive as it is Output as Le audio data, if you enter the packet sync word error detection signal or the header error check code error detection signal of two received packets three of the same received packet, the corresponding 2
The output of the receiving buffer means in which the received packets other than the three received packets are accumulated is selected and output as it is as the received digital audio data, and the packet synchronization word error detection signal or the header is obtained by the three received packets of the same received packet of three times. When an error detection code error detection signal is input, muting is performed or a majority decision is made to judge the outputs of the three reception buffer means and output as received digital audio data. It is possible to exclude an unreliable received packet from a majority decision by using an error of a packet synchronization word and a header CRC error as an index for three received packets. Has the effect of.

According to a sixth aspect of the present invention, an average received power means and a received packet control and header error detection code error notification means are provided, and the instantaneous received power and the average received power are input to detect a level difference, When the packet synchronization word error detection signal or the header error detection code error detection signal is not input in the same three received packets and the level difference between the instantaneous received power and the average received power is within a certain level, the three receiving buffer means The output is judged by majority and output as received digital voice data, and the packet sync word error detection signal or header error detection code error detection signal is input in one received packet of the same three received packets, or the instantaneous received power and average When the level difference from the received power is above a certain level, the reception pattern with the smaller level difference between the instantaneous received power and the average received power is obtained. Output of the receiving buffer means in which the packets are accumulated is selected and output as it is as received digital audio data, and a packet synchronization word error detection signal or a header error detection code error detection is performed by two received packets of the same received packet of three times. When a signal is input or when the level difference between the instantaneous received power and the average received power exceeds a certain level, the output of the receive buffer means in which receive packets other than the corresponding two receive packets are accumulated is selected and kept as it is. Output as received digital voice data and input packet sync word error detection signal or header error detection code error detection signal with three received packets of the same received packet three times, or level difference between instantaneous received power and average received power Is above a certain level, mute or 3
A majority decision is made to judge the output of one of the receiving buffer means, or the output of the receiving buffer means corresponding to a received packet having a smaller level difference between the average received power and the instantaneous received power is selected and output as received digital audio data. The wireless device according to claim 4, further comprising an error detection code error and a determination means based on a reception power, wherein a packet synchronization word error, a header CRC error, and an instantaneous reception for three reception packets. By using the level difference between the power and the average received power as an index, it is possible to exclude a reception packet with low reliability from the target of the majority decision.

According to an eighth aspect of the present invention, the transmitting side has a transmitting codec means for converting an audio signal into transmitting digital audio data, and the converted transmitting digital audio data is converted into a specific packet for each fixed length. And a packet generation means for generating a transmission packet by adding packet information such as a packet synchronization word and a header to the outputs of the three transmission buffer means, respectively. A modulation unit that modulates the output of the unit, and a transmission wireless unit that transmits the output of the modulation unit by changing the radio frequency channel for each packet, input a reception signal to the receiver side, and for each packet Reception radio means for converting a changing radio frequency channel to a base band; demodulation means for demodulating an output of the reception radio means; The output of the control means to input remains of the multi-level,
A packet multi-valued synchronization word detection means for outputting a packet synchronization word detection signal, and three multi-valued reception buffer means,
The synthesizing means for adding and synthesizing the outputs of the three multi-value receiving buffer means, the multi-valued data judging means for judging the threshold of the output of the synthesizing means by the multi-valued threshold, and the received digital audio data corresponded to the transmission codec means. This is a wireless device characterized by having a receiving codec means for converting with an algorithm, and it becomes possible to make a decision by maximum ratio combining, and it is possible to maximize the effects of time diversity and frequency diversity. Has the action of

The invention according to claim 9 is a packet multi-valued device for outputting a packet synchronization word error detection signal when it fails to detect a packet synchronization word at a predetermined position of a packet in the radio equipment according to claim 8. It is equipped with a synchronization word detection and detection error notification means.
With the error of the packet synchronization word as an index for one received packet, it is possible to exclude an unreliable received packet from the target of the determination of the maximum ratio combination.

According to the tenth aspect of the present invention, in the radio apparatus according to the ninth aspect, the average received power is output from the receiving radio means, the instantaneous received power is averaged for each packet, and the average received power is output. A means for adding a means for determining the maximum ratio combining of unreliable received packets using the error of the packet synchronization word for three received packets and the level difference between the instantaneous received power and the average received power as indicators. It has the effect that it can be removed.

According to an eleventh aspect of the present invention, in the radio apparatus according to the ninth aspect, when a header error detection code error is detected, a header packet error detection code error detection signal is output and a header error detection code error is output. The notification means is added, and it becomes possible to exclude the unreliable received packet from the target of the determination of the maximum ratio combination by using the error of the packet synchronization word and the header CRC error for the three received packets. Has the effect of.

According to a twelfth aspect of the present invention, the average received power means, the received packet control and the header error detection code error notifying means are added to the radio equipment according to the ninth aspect, and three received packets are included. On the other hand, the packet synchronization word error, the header error detection code error (header CRC error), and the level difference between the instantaneous received power and the average received power are used as indicators to exclude the unreliable received packet from the maximum ratio combining judgment target. It has the effect that it becomes possible.

According to a thirteenth aspect of the present invention, in a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, transmission codec means for converting into transmission digital voice data and transmission digital voice data are fixed on the transmitter side. Two transmission buffer means for performing division and speed conversion for converting to a specific packet for each length, and packet generation means for generating transmission packets by adding packet synchronization word information to the outputs of the two transmission buffer means, respectively. And a receiving radio means for transmitting a packet having the same content twice, a receiving radio means for converting from a radio frequency channel which changes for each packet of the transmitter to a base band, and a packet from received data. Packet sync word detection means for detecting sync word information, and reception based on the packet sync word detection signal Dividing each packet, a packet splitting means from the received data eliminate packet synchronization word and header like, and two receive buffer means for storing data for each received packet, and outputs the speed conversion, and selection means,
A receiving codec means for converting the digital voice data of the receiving packet selected by the selecting means by an algorithm corresponding to the transmitting codec means, and the selecting means detects a packet synchronization word error in two identical content receiving packets. When no signal is input, the output of one of the receiving buffer means is directly output from the two receiving buffer means as the receiving digital audio data, and the packet synchronizing word error detection signal is obtained by one receiving packet of the same content receiving packet of two times. , The output of the receiving buffer means in which the receiving packets other than the receiving packet in which the packet synchronization word error has occurred is stored, is output as it is as the received digital voice data, and the received packets with the same content are received twice. Packet sync word error detection signal input When the output of one receiving buffer means is selected from the two receiving buffer means and is output as received digital audio data as it is, the error of the packet synchronization word is used as an index for two receiving packets. It has an effect that it becomes possible to exclude a reception packet with low reliability from the target of selection judgment.

According to a fourteenth aspect of the present invention, in the radio apparatus according to the thirteenth aspect, the instantaneous reception power is output from the reception wireless means, the instantaneous reception power is averaged for each packet, and the average reception power is output. Means for excluding an unreliable received packet from the target of selection judgment, using as an index the error of the packet synchronization word for two received packets and the level difference between the instantaneous received power and the average received power. Has the effect that it becomes possible.

According to a fifteenth aspect of the present invention, in the radio apparatus according to the thirteenth aspect, when a header error detection code error is detected, a header packet error detection code error detection signal is output and a header error detection code error is output. A notification means is provided, and an operation of allowing an unreliable received packet to be excluded from the selection determination targets by using an error of the packet synchronization word and a header CRC error for two received packets as an index. Have.

According to a sixteenth aspect of the present invention, in the radio apparatus according to the thirteenth aspect, the average received power is output from the reception wireless means, the instantaneous received power is averaged for each packet, and the average received power is output. Means for adding received packet control and header error detection code error notifying means, and a packet synchronization word error, a header CRC error, and an instantaneous received power and an average received power for two received packets. With the level difference as an index, it is possible to remove a reception packet having low reliability from the selection determination target.

According to a twentieth aspect of the present invention, a transmitter includes a microphone for voice input, a transmission codec means for converting an output from the microphone into transmission digital audio data by an appropriate algorithm, and the converted transmission. Two transmission buffer means for performing division and speed conversion for converting digital audio data into specific packets for each fixed length, transmission buffer control means for controlling the two transmission buffer means, and two transmission buffer means A packet generation means for adding a packet synchronization word and a packet information such as a header to an output to generate a transmission packet, a transmission packet control means for controlling the packet generation means, and a modulation means for modulating the output of the packet generation means. And the output of the modulator is transmitted by changing the radio frequency channel for each packet. Means and transmitting antenna means for outputting the output from the transmitting radio means as a radio wave signal, and the receiver converts the radio frequency channel changing for each packet of the transmitter to the baseband. Receiving radio means, demodulating means for demodulating the output of the receiving radio means, data determining means for determining the output of the demodulating means, and packet synchronization by detecting a packet synchronization word from the output of the data determining means. Packet synchronization word detection means for outputting a word detection signal, reception packet control means for performing control for dividing the reception data output from the data determination means based on the packet synchronization word detection signal, and error detection code of the header Received packet control and header error that outputs a header error detection code error detection signal when an error is detected Output code error notifying means, average reception power means for outputting instantaneous reception power from the reception wireless means, averaging the instantaneous reception power for each packet and outputting average reception power, and reception packet control by the reception packet control means. A packet dividing means for removing a packet synchronization word, a header and the like from the received data output from the data judging means for each time, two receiving buffer means for speed-converting and outputting the output of the packet dividing means, and the two receiving buffer means. For controlling the reception buffer control means, the input selection synthesizing means, the variable threshold multilevel data determination means, and the digital voice data of the reception packet selected by the variable threshold multilevel data determination means corresponding to the transmission codec means. And the input selection / synthesis When the packet synchronization word error detection signal or the header error detection code error detection signal is not input in the same reception packet and the level difference between the instantaneous reception power and the average reception power is within a certain level, the two multilevel reception buffers are provided. The output of the means is combined and the packet synchronization word error detection signal or the header error detection code error detection signal is input by one reception packet of the same two reception packets, or the level difference between the instantaneous reception power and the average reception power is When the number of received packets exceeds a certain level, the outputs of the multi-level receiving buffer means in which the received packets other than the corresponding received packets are accumulated are combined, and two received packets of the same received packet of two times are used for the packet synchronization word error detection signal or Header error detection code Input an error detection signal, or the level difference between the instantaneous received power and average received power is above a certain level. In this case, the outputs of the two multi-value receiving buffer means are combined, and the variable threshold multi-value data judging means corresponds to the number of multi-value receiving buffer means selected by the input selecting / combining means. To perform threshold determination or input a packet synchronization word error detection signal or a header error detection code error detection signal in two received packets of the same received packet twice, or to determine the instantaneous received power and average received power. Is a wireless device that mutes only when the level difference between the two becomes equal to or more than a certain level, and performs the threshold determination in other cases. The packet synchronization word error, the header CRC error and the instantaneous Using the level difference between the received power and the average received power as an index, unreliable received packets are An effect that it is possible to remove the target data determination.

The invention according to claim 21 is the radio apparatus according to claim 1, which enables effective use of empty packets and low power consumption by reducing the operation speed of the transmission / reception codec. It is possible to increase the interval between packets to be used and reduce the packet occupancy rate, and as a result, it is possible to effectively use empty packets and reduce power consumption.

According to a twenty-second aspect of the present invention, a low rate transmission codec means in which the transmission codec means has a low rate, a low rate reception codec means in which the reception codec means has a low rate, and a speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 2, further comprising a majority decision means for making a majority decision at the speed of the low-rate reception codec means, which enables effective use of empty packets and low power consumption. Has the effect of becoming.

According to a twenty-third aspect of the present invention, from the speeds of the low rate transmission codec means in which the transmission codec means has a low rate, the low rate reception codec means in which the reception codec means has a low rate, and the low rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 3, further comprising an input selection majority decision means for making a majority decision at a speed of the low rate reception codec means, which enables effective utilization of empty packets and low power consumption. Has the action of

According to a twenty-fourth aspect of the present invention, from the speed of the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 4, further comprising: a majority decision for making a majority decision at the speed of the low-rate reception codec means and a decision means by the received power, effective use of empty packets and low power consumption. It has the effect that it can be converted.

According to a twenty-fifth aspect of the present invention, the low rate transmission codec means in which the transmission codec means has a low rate, the low rate reception codec means in which the reception codec means has a low rate, and the speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 5, further comprising: a majority vote for making a majority decision at a speed of the low rate reception codec means and a decision means for a header error detection code error. This has the effect of reducing power consumption.

According to a twenty-sixth aspect of the present invention, there is provided a low rate transmission codec means in which the transmission codec means has a low rate, a low rate reception codec means in which the reception codec means has a low rate, and a speed of the low rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, 7. A majority decision device for making a majority decision at the speed of the low-rate reception codec means, a header error detection code error, and a decision means based on the received power.
The wireless device described above has an effect of effectively using an empty packet and reducing power consumption.

According to a twenty-seventh aspect of the present invention, a low rate transmission codec means in which the transmission codec means has a low rate, a low rate reception codec means in which the reception codec means has a low rate, and a speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, 9. The radio apparatus according to claim 8, further comprising: combining means for combining at a speed of the low-rate receiving codec means, and multi-valued data judging means for making a multi-valued data judgment at the speed of the low-rate receiving codec means. It has the effect of enabling effective use of empty packets and low power consumption. .

According to a twenty-eighth aspect of the present invention, the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 9, wherein the empty packet Has an effect of effective utilization and power consumption can be achieved.

According to a twenty-ninth aspect of the present invention, a low rate transmission codec means in which the transmission codec means has a low rate, a low rate reception codec means in which the reception codec means has a low rate, and a speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 10, wherein an empty packet is provided. Has an effect of effective use and low power consumption can be of.

According to a thirtieth aspect of the present invention, the low rate transmission codec means in which the transmission codec means has a low rate, the low rate reception codec means in which the reception codec means has a low rate, and the speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 11, wherein the empty packet Has an effect of effective use and low power consumption can be of.

According to the thirty-first aspect of the present invention, the low rate transmission codec means in which the transmission codec means has a low rate, the low rate reception codec means in which the reception codec means has a low rate, and the speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 12, wherein the empty packet Has an effect of effective use and low power consumption can be of.

According to a thirty-second aspect of the present invention, the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 13, further comprising a selection unit that selects at a speed of the low-rate reception codec unit, which enables effective use of empty packets and low power consumption. Have an effect.

According to a thirty-third aspect of the present invention, from the speed of the low rate transmission codec means in which the transmission codec means is reduced in rate, the low rate reception codec means in which the reception codec means is reduced in rate, and the speed of the low rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 14, further comprising a selection unit that selects at a speed of the low-rate reception codec unit, which enables effective use of empty packets and low power consumption. Have an effect.

According to a thirty-fourth aspect of the present invention, from the speed of the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 15, further comprising a selection unit that selects at a speed of the low-rate reception codec unit, which enables effective use of empty packets and low power consumption. Have an effect.

According to a thirty-fifth aspect of the invention, from the speed of the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, The wireless device according to claim 16, further comprising a selection unit that selects at a speed of the low-rate reception codec unit, which enables effective use of empty packets and low power consumption. Have an effect.

According to a thirty-sixth aspect of the present invention, a low rate transmission codec means in which the transmission codec means has a low rate, a low rate reception codec means in which a reception codec means has a low rate, and a speed of the low rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 17, Has an effect of effective use and low power consumption can be of.

According to a thirty-seventh aspect of the present invention, from the speed of the low rate transmission codec means in which the transmission codec means is reduced in rate, the low rate reception codec means in which the reception codec means is reduced in rate, and the speed of the low rate transmission codec means Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. The wireless device according to claim 18, wherein the empty packet Has an effect of effective use and low power consumption can be of.

According to a thirty-eighth aspect of the present invention, the low-rate transmission codec means in which the transmission codec means has a low rate, the low-rate reception codec means in which the reception codec means has a low rate, and the speed of the low-rate transmission codec means are used. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. 20. The wireless device according to claim 19, wherein the empty packet Has an effect of effective use and low power consumption can be of.

According to a thirty-ninth aspect of the present invention, from the speed of the low rate transmission codec means in which the transmission codec means has a low rate, the low rate reception codec means in which the reception codec means has a low rate, and the speed of the low rate transmission codec means. Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion into the packet speed, and reception buffer control means for controlling the reception buffer means so as to perform speed conversion from the packet speed to the low rate reception codec means speed, An input selection synthesizing means for synthesizing or selecting at the speed of the low-rate receiving codec means, and a variable threshold multi-valued data judging means for making a variable threshold multi-valued data judgment at the speed of the low-rate receiving codec means. 21. The wireless device according to claim 20, wherein the empty packet Has an effect of effective use and low power consumption can be of.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram of a radio apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, the high-quality wireless apparatus according to this embodiment is composed of a transmitting apparatus and a receiving apparatus. First, the transmitter will be described. A microphone 1 and a transmission codec 2 for converting analog voice data output from the microphone 1 into transmission digital voice data by an appropriate algorithm are provided. Also, the transmission Cod
A transmission buffer a3 that performs division and speed conversion so that the transmission digital audio data output from ec2 is put into a specific packet for each fixed length under the control of the transmission buffer control unit 7.
And a transmission buffer b4 and a transmission buffer c5 having the same functions as the transmission buffer a3.

The transmission packet control unit 6 performs control for generating a transmission packet. A packet synchronization word and a header are added to each transmission digital audio data under the control of the transmission packet control unit 6. The transmission buffer control unit 7 controls the transmission buffer a3, the transmission buffer b4, and the transmission buffer c5. The packet generator 8 adds a packet synchronization word and a header to each of the transmission digital audio data stored in the transmission buffers a3, b4, and c5 to form a packet.

The modulator 9 modulates the output of the packet generator 8. The transmission radio unit 10 changes the radio frequency channel for each packet of the data modulated by the modulation unit 9, and transmits the data from the transmission antenna 11.

Next, the receiver will be described. The reception device includes a reception antenna 12, a reception radio unit 13 that converts a radio frequency channel that changes for each packet of a transmitter into a baseband, and a demodulation unit 14 that demodulates the output of the reception radio unit 13.
Is equipped with. The data determination unit 15 determines the data by converting the signal from the demodulation unit 14 into binary data. The packet synchronization word detecting unit 16 includes the data determining unit 1
The packet sync word is detected from the received data of 5 outputs. The reception packet control unit 17, based on the packet synchronization word detection signal output from the packet synchronization word detection unit 16,
Controls to divide the received data.

Under the control of the reception packet control unit 17, the packet division unit 18 removes the packet synchronization word and the header for each reception packet. The data output from the packet division unit 18 is individually received by the reception buffer a2.
0, b21 and c22. Receive buffer a2
0, the reception buffer b21 and the reception buffer c22 are 3
It stores packets with the same contents that are received consecutively.
The reception buffer control unit 19 performs speed conversion of the output of the packet division unit 18 using the reception buffers a20, b21, and c22, and controls the output of each reception buffer to make a majority decision by the majority decision unit 23 bit by bit. To do.

The majority decision unit 23 receives the reception buffer a2.
The 0, b21 and c22 outputs are simultaneously input to make a majority decision every 1 bit time and output the received digital audio data. The reception digital voice data is received by the Codec 24.
At, an analog voice data is converted by an algorithm corresponding to the transmission Codec 2 and the speaker 25 sounds.

The operation of the radio apparatus configured as above will be described below. The voice input from the microphone 1 is converted into analog voice data, and the transmission Codec 2 converts the analog voice data into transmission digital voice data by an appropriate algorithm. The transmission digital voice data is stored in the transmission buffer a3, the transmission buffer b4, and the transmission buffer c5 which are controlled by the transmission buffer control unit 7 and perform the division and speed conversion to put the same transmission digital voice data into a specific packet for each fixed length. To be done.

The transmission buffer control unit 7 has the transmission buffer a.
When the same transmission digital voice data is accumulated in fixed lengths 3, 3, b 4 and c 5, the packet generation unit 8 transmits the transmission buffer a.
3. The transmission digital voice data in the transmission buffer b4 and the transmission buffer c5 are converted in speed and sequentially transferred. Under the control of the transmission packet control unit 6, a packet synchronization word and a header are added to the transmission digital audio data packetized by the packet generation unit 8 to generate a transmission packet. The output of the packet generation unit 8 is modulated by the modulation unit 9, the transmission radio unit 10 changes the radio frequency channel for each packet, and the radio signal is transmitted via the transmission antenna 11 as a packetized radio signal.

Also, the control packet transmitted in the header or in advance is used to notify the receiving side to receive the same three consecutive packets. As a result, the packet having the configuration shown in FIG. 2 is transmitted. Frequency hopping is performed for each packet, and f (n) in FIG. 2 indicates a frequency channel.

The radio signal received via the reception antenna 12 is converted by the reception radio section 13 from a radio frequency channel which changes for each packet of the transmitter to a base band, and demodulated by the demodulation section 14. The output of the demodulation unit 14 is subjected to data determination by the data determination unit 15 bit by bit. The packet synchronization word detection unit 16 detects a packet synchronization word from the received data output from the data determination unit 15, and outputs a packet synchronization word detection signal. The received packet control unit 17 receiving the packet synchronization word detection signal is
At 8, the control for dividing the received data is performed.

Under the control of the reception packet control unit 17, the packet division unit 18 removes the packet synchronization word and the header for each reception packet to obtain the reception digital voice data before rate conversion, and the reception buffer a20, reception buffer b21, which correspond in sequence, It is accumulated in the reception buffer c22.
The reception digital voice data before speed conversion accumulated in the reception buffer a20, the reception buffer b21, and the reception buffer c22 are speed-converted by the control of the reception buffer control unit 19, and the majority decision determination unit 23 performs a majority decision for each bit. Is converted into analog voice data by the reception Codec 24 by the algorithm corresponding to the transmission Codec 2,
The audio is output from the speaker 25.

Even if the packet synchronization word detection unit 16 fails to detect the packet synchronization word, the packet reception is performed as it is based on the previous timing, and the above operation is performed.

Further, the three transmission buffers may be configured as one transmission buffer, and the same bit of the transmission digital audio data may be put in the same bit position of the three packets to generate the transmission packet. Further, the above three receiving buffers may be set to two receiving buffers, and the majority decision may be made in accordance with the bit timing of the third packet of the packets of the same content received three times in succession.

With the above configuration, in the system where the transmission frequency hops for each packet,
It has time diversity and frequency diversity effects, and enables high-quality wireless voice communication.

(Second Embodiment) FIG. 3 is a block diagram of a radio apparatus according to the second embodiment of the present invention. This embodiment is an improvement of the first embodiment, and is configured to obtain received digital voice data from a received packet other than the received packet in which the packet synchronization word error has occurred when the packet synchronization word detection fails. In FIG. 3, 1
25 are the same as in FIG. 101 is the data determination unit 15
If the packet synchronization word is detected from the output received packet and the packet synchronization word cannot be detected at the position of the packet synchronization word, the packet synchronization word error detection and detection error notification unit that outputs the packet synchronization word error detection signal is there. 102 is an input selection majority decision unit.

If the packet selection word error detection signal is not input, the input selection majority decision unit 102 inputs the outputs of the reception buffer a20, the reception buffer b21, and the reception buffer c22 similarly to the majority decision unit 23, and makes a majority decision. To do. Further, when the packet synchronization word error detection signal is input, the input selection majority decision unit 102 stops the input from the reception buffer in which the corresponding reception packet is accumulated, selects the remaining reception buffer output, and outputs the reception digital audio data. Output.

The operation of the radio apparatus configured as described above will be described only for the differences from the first embodiment.

The packet synchronization word detection / detection error notification unit 101 outputs a packet synchronization word detection signal when a packet synchronization word is detected from the output of the data determination unit 15, and outputs a packet synchronization word detection signal when the packet synchronization word detection fails. Outputs the word error detection signal.

The input selection majority decision unit 102 performs processing in the following cases and outputs data.

(1) In three consecutive same received packets,
When the packet synchronization word error detection signal is not input, the outputs of the reception buffer a20, the reception buffer b21, and the reception buffer c22 are input similarly to the majority decision unit 23, the majority decision is performed, and the reception digital audio data is output.

(2) In three consecutive same received packets,
When one packet synchronization word error detection signal is input, one is selected from two reception buffer outputs other than the reception buffer in which the corresponding reception packet is accumulated, and is output as it is as reception digital audio data.

(3) In three consecutive same received packets,
When two packet synchronization word error detection signals are input, a reception buffer output other than the two reception buffers in which the corresponding reception packets are accumulated is selected and output as it is as reception digital audio data.

(4) In three consecutive same received packets,
When all three packet synchronization word error detection signals are input, the outputs of the reception buffer a20, the reception buffer b21, and the reception buffer c22 are input, the majority decision is performed, and the reception digital audio data is output.

With the above configuration, in the first embodiment, the object for which the majority decision is made even when the packet sync word detection fails is that the highly reliable received packet in which the packet sync word detection signal exists. By selecting and making a majority decision, higher quality wireless voice communication becomes possible.

(Embodiment 3) FIG. 4 is a block diagram of a radio apparatus according to Embodiment 3 of the present invention. The present embodiment is a modification of the second embodiment, in which a packet synchronization word error detection signal and a level difference between the average received power and the instantaneous received power are used to select a more reliable received packet and receive digital signals. It is configured to obtain voice data. Note that the instantaneous reception power refers to the reception power when a certain received packet is received, and the average reception reception power refers to the average reception power of each radio frequency channel or the average reception power of all frequency channels.

In FIG. 4, 1 to 25 and 101 are the same as in FIG. 201 is an average received power unit that averages the received power for each received packet; 202 is a packet synchronization word error detection signal and a level difference between the average received power and the instantaneous received power, and selects a majority decision or a receive buffer output. And a decision unit based on the received power and a majority decision to output the received digital audio data.

The operation of the radio apparatus configured as described above will be described only for the differences from the second embodiment.
In a system that uses a frequency band in which the frequency hops for each packet and only a relatively gradual fading occurs for one packet time depending on the usage environment, and other systems coexist, the received power changes greatly for each received packet. It means that there is an interference source in the frequency channel. In other words, the fact that the instantaneous received power is larger than expected than the average received power means that the received packet is likely to be affected by the interference wave.

This embodiment utilizes this to obtain the received digital voice data from the highly reliable received packet. The average received power unit 201 averages each received packet and outputs the average received power.

Judgment unit 202 based on majority decision and received power
Performs processing in the following four cases and outputs data.

(1) In three consecutive same received packets,
The average received power of the average received power unit 201 output and the reception wireless unit 1 without inputting the packet synchronization word error detection signal
When the level difference of the instantaneous output powers of the three outputs is proper (within the reception threshold), the majority decision is made similarly to the majority decision section 23, and the received digital audio data is output.

(2) In three consecutive received packets,
Input one packet sync word error detection signal,
When there is one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold), the level difference between the average received power and the instantaneous received power of two received packets other than the corresponding received packet Are compared, and a reception buffer in which reception packets with a smaller level difference are accumulated is selected and output as reception digital audio data.

(3) When the packet synchronization word error detection signal is input or the level difference between the average reception power and the instantaneous reception power becomes improper in two reception packets of three consecutive same reception packets , A reception buffer output in which reception packets other than the corresponding two reception packets are accumulated is selected and output as reception digital audio data.

(4) When the packet synchronization word error detection signal is input or the level difference between the average reception power and the instantaneous reception power becomes improper in three reception packets of three consecutive same reception packets , Mute, majority decision of all reception buffers, select the reception buffer output corresponding to the reception packet with the smaller level difference between the average reception power and the instantaneous reception power, and output as reception digital audio data .

With the above configuration, it is possible to perform radio voice communication of higher quality than that of the second embodiment.

(Embodiment 4) FIG. 5 is a block diagram of a radio apparatus according to Embodiment 4 of the present invention. The present embodiment is a further improvement of the second embodiment, and uses the packet synchronization word error detection signal and the error detection of the error detection code (CRC) added to the header in the received packet, and has higher reliability. It is configured to select a reception packet and obtain reception digital audio data. 5, 1 to 25 and 101 are the same as those in FIG.

Reference numeral 301 controls the packet division unit 18 based on the packet synchronization word detection signal output from the packet synchronization word detection / detection error notification unit 101, and if there is an error in the CRC added in the header, the header CRC
It is a reception packet control and header CRC error notification unit that outputs an error detection signal. 302 uses a packet sync word error detection signal and a header CRC error detection signal to select majority decision or receive buffer output and output received digital voice data.
This is a determination unit based on a C error.

The operation of the radio apparatus configured as described above will be described only for the differences from the second embodiment.

When each packet has a header having important information, and an error detection code is added to the header from that meaning, the error in the packet synchronization word and the header can be a large indicator of the reception quality of the received packet. . Especially in the case of a system that requires immediacy such as voice communication, even if packet sync word detection fails or an error is detected in the header, re-transmission is not possible, so communication using a single packet as in the conventional example Then, you have no choice but to mute or output it as audio noise.
However, in the present embodiment, since packets having the same content are transmitted n times, a high quality packet is selected from among them to obtain the received digital voice data.

The reception packet control / header CRC error notifying section 301 detects a CRC error in the header,
When a CRC error is detected, a header CRC error detection signal is output and the packet dividing unit 18 is controlled similarly to the reception packet control unit 17.

The decision unit 302 based on majority vote and header CRC error performs processing in the following four cases and outputs data.

(1) In three consecutive same received packets,
When the packet synchronization word error detection signal and the header CRC error detection signal are not input, the majority decision is made similarly to the majority decision unit 23 and the received digital voice data is output.

(2) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
When one error detection signal is input, one of the two reception buffer outputs other than the reception buffer in which the corresponding reception packet is stored is selected and output as it is as the reception digital audio data.

(3) When a packet synchronization word error detection signal or a header CRC error detection signal is input in two reception packets of three consecutive same reception packets, reception packets other than the corresponding two reception packets are accumulated. Select the reception buffer output that is present and output as reception digital audio data.

(4) When the packet synchronization word error detection signal or the header CRC error detection signal is input in three reception packets of three consecutive same reception packets, the muting is performed or the majority decision of all the reception buffers is performed. , Output as received digital audio data.

With the above-described structure, it is possible to perform radio voice communication of higher quality than that of the second embodiment.

(Fifth Embodiment) FIG. 6 is a block diagram of a radio apparatus according to a fifth embodiment of the present invention. This embodiment is a further improvement of the third and fourth embodiments, and includes a packet synchronization word error detection signal, an error detection of an error detection code (CRC) added to a header in a received packet, and an average received power. And the instantaneous received power level difference is utilized to select a more reliable received packet to obtain received digital audio data. 6, 1 to 25, 101, and 301 are shown in FIGS.
1 is the same as in FIG. Reference numeral 401 denotes a packet CRC word error detection signal, a header CRC error detection signal, and a level difference between the average received power and the instantaneous received power. It is a determination unit based on an error and received power.

The operation of the radio apparatus configured as described above will be described only for the differences from the fourth embodiment. Judgment unit 40 based on majority vote, header CRC error and received power
1 outputs the data by performing processing in the following four cases according to the presence / absence of the packet synchronization word error detection or the presence / absence of the header CRC error detection signal, or the output of the average received power unit 201.

(1) In three consecutive same received packets,
The packet synchronization word error detection signal and the header CRC error detection signal are not input, and the level difference between the average reception power of the average reception power unit 201 output and the instantaneous reception power of the reception wireless unit 13 is proper (within the reception threshold). If so, the majority decision is made similarly to the majority decision section 23, and the received digital audio data is output.

(2) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
If one error detection signal is input or one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold) occurs, two received packets other than the corresponding received packet The level difference between the average received power and the instantaneous received power is compared, and the receiving buffer in which the received packets with a smaller level difference are accumulated is selected and output as received digital audio data.

(3) Whether the packet sync word error detection signal or the header CRC error detection signal is input to two received packets of three consecutive same received packets,
If the level difference between the average received power and the instantaneous received power becomes improper (more than the received threshold), select the receive buffer output in which receive packets other than the corresponding two receive packets are accumulated, and select the receive digital signal. Output as voice data.

(4) Whether the packet sync word error detection signal or the header CRC error detection signal is input in the three consecutive reception packets of the same reception packet,
If the level difference between the average received power and the instantaneous received power becomes improper (more than the received threshold), either mute it, make a majority decision on all the receive buffers, or compare the average received power and the instantaneous received power. A reception buffer output corresponding to a reception packet having a smaller level difference is selected and output as reception digital audio data.

With the above configuration, it is possible to perform radio voice communication of higher quality than those of the third and fourth embodiments.

(Sixth Embodiment) FIG. 7 is a block diagram of a radio apparatus according to a sixth embodiment of the present invention. In the present embodiment, based on the first embodiment, data determination is performed on multivalued data of the maximum ratio combination result. In FIG. 7, 1 to 25
Is the same as in FIG. Reference numeral 501 denotes a packet-synchronized multi-valued word detection unit that inputs the output of the demodulation unit 14 in a multi-valued state without judging data and detects a packet synchronization word from the received packet. Reference numeral 502 is a multi-level reception buffer a that performs speed conversion while keeping the output of the packet division unit 18 in a multi-level state. Reference numerals 503 and 504 denote a multilevel reception buffer a 502.
A multi-value receiving buffer b and a multi-value receiving buffer c having the same functions as.

Reference numeral 505 denotes a combining unit which, under the control of the receiving buffer control unit 19, inputs the outputs of the multi-valued reception buffer a 502, the multi-valued reception buffer b 503 and the multi-valued reception buffer c 504 simultaneously at every 1-bit time and combines them. Fifty
6 is a synthesizing unit 5 under the control of the receiving buffer control unit 19.
This is a multi-valued data determination unit that performs threshold value determination on the multi-valued reception digital audio data that is synthesized and added in 05 and converts it to binary data.

The operation of the radio apparatus configured as described above will be described only for the differences from the first embodiment. Here, the majority decision is not performed after the same plural packets are subjected to the data decision, but the respective data in the plurality of received packets are added and synthesized, and after the addition and synthesis, the data decision is performed to generate the binary data. This makes it possible to obtain a greater effect of time diversity and frequency diversity.

[0104] The demodulation unit 14 is operated in a multi-valued state without judging data.
Packet multi-valued word detection unit 501 to which the output of
Detects a packet synchronization word from the received packet and outputs a packet synchronization word detection signal. Each reception packet from which the packet synchronization word and the header accumulated in the multi-level reception buffer a 502, the multi-level reception buffer b 503, and the multi-level reception buffer c 504 have been removed is subjected to speed conversion under the control of the reception buffer control unit 19, and the bit time is converted. The multi-values are input to the combining unit 505 as they are, and are added and combined.

The multi-valued reception digital audio data output from the synthesizing unit 505 is input to the multi-valued data judgment unit, and the threshold judgment is performed for each bit time by an appropriate threshold (hereinafter, multi-valued threshold), and as the reception digital sound data. Is output. Even if the packet synchronization word detection fails, the packet reception is performed as it is based on the previous timing and the above operation is performed, as in the first embodiment.

With the above arrangement, the effect of frequency ratio and time diversity can be more effectively used, and the effect of determination by maximum ratio combining can be obtained.
Further, high quality wireless voice communication becomes possible.

(Embodiment 7) FIG. 8 is a block diagram of a radio apparatus according to Embodiment 7 of the present invention. The present embodiment is configured to combine the second embodiment and the sixth embodiment. 8 are the numbers 1 to 25 and 502 to 505 in FIG.
Is the same as 601 inputs the output of the demodulator 14 in a multi-valued state without judging data, and when a packet synchronization word is detected from the received packet, outputs a packet synchronization word detection signal and cannot detect the packet synchronization word. In this case, the packet synchronization word error detection unit outputs a packet synchronization word error detection signal. A multi-value reception digital voice 602 performs the same synthesis as the synthesis unit 505 in the sixth embodiment, or selects and synthesizes from a plurality of multi-level reception buffer outputs using a packet synchronization word error detection signal. It is an input selection combining unit that outputs data.

Reference numeral 603 denotes a variable threshold multi-valued data determination unit which changes the appropriate multi-valued threshold in association with the number of inputs of the input selection / synthesis unit 602 to perform threshold determination and outputs received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the sixth embodiment. Packet synchronization multi-level word detection and detection error notification unit 601
Inputs the output of the demodulation unit 14 in a multi-valued state without judging data, outputs a packet synchronization word detection signal when a packet synchronization word is detected, and outputs a packet synchronization word detection signal when packet synchronization word detection fails. Outputs the word error detection signal. The input selection / synthesis unit 602 performs processing in the following four cases according to the presence / absence of packet synchronization word error detection, and outputs data.

(1) In three consecutive same received packets,
When the packet synchronization word error detection signal is not input, all multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

(2) In three consecutive same received packets,
When one packet sync word error detection signal is input, select two multi-level receive buffers that store receive packets other than the corresponding receive packets, perform addition and synthesis for each bit time, and receive multi-level receive digital voice. Output as data.

(3) When two packet synchronization word error detection signals are input in two reception packets of three consecutive same reception packets, a multilevel reception buffer in which reception packets other than the corresponding reception packet are accumulated is selected. , Is output as it is as multi-level reception digital audio data.

(4) When three packet synchronization word error detection signals are input in three consecutive reception packets of the same reception packet, all multi-level reception buffer outputs are added and combined to obtain multi-level reception digital audio data. Output.

Variable threshold multi-valued data determination unit 60
Numeral 3 performs threshold determination using an appropriate multilevel threshold in conjunction with the number of inputs, and outputs received digital voice data. At this time, the variable threshold multi-valued data determination unit 603 changes the value of the multi-valued threshold value to an appropriate value in association with the number of inputs of the input selection synthesis unit 602. For example, when there is no error detection signal in three packets, the input selection synthesizing unit 602 adds the data of the three packets, so the threshold value that is appropriate for the addition of the three data is selected. If one error detection signal is input, the data of two packets will be added.
Select a threshold value that matches the two data.

As described above, before the binary judgment (judgment of the reception data to 1 or 0), the reception data in the multi-valued A / D state are combined (added) in the same position bits of 3 packets (or 2 packets). After that, by performing the threshold judgment, the frequency diversity effect and the time diversity effect can be maximized.

Note that, in particular, when three packet synchronization word error detection signals are input in three received packets of the same three consecutive received packets (all three packets are in error), mute may be performed. With the above configuration, higher quality wireless voice communication can be performed.

(Embodiment 8) FIG. 9 is a block diagram of a radio apparatus according to Embodiment 8 of the present invention. The present embodiment is configured to combine the third embodiment and the seventh embodiment. 1 to 25, 502 to 504 and 6 in FIG.
01 is the same as FIG. 8 and 201 is the same as FIG.
An input selection / synthesis unit 701 selects and synthesizes multi-level reception buffer outputs and outputs multi-level reception digital audio data. Further, the input selection / synthesis unit 701 performs selection and synthesis by using the level difference between the average reception power and the instantaneous reception power in addition to the packet synchronization word error detection signal.

Reference numeral 702 denotes a variable threshold multi-valued data determination unit which changes the multi-valued threshold to an appropriate value in association with the number of inputs of the input selection / synthesis unit 701 to perform threshold determination and outputs received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the seventh embodiment. The input selection / synthesis unit 701 performs processing in the following four cases according to the presence / absence of packet synchronization word error detection and the level difference between the average received power and the instantaneous received power, and outputs the data.

(1) In three consecutive same received packets,
When the packet synchronization word error detection signal is not input in any packet and the level difference between the average received power of the average received power section 201 output and the instantaneous received power of the received radio section 13 is proper (within the reception threshold). , All the multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

(2) In three consecutive same received packets,
Input one packet sync word error detection signal,
When there is one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the reception threshold), two multi-level receptions in which two received packets other than the corresponding received packet are accumulated The buffer outputs are added and combined and output as multilevel reception digital audio data.

(3) The packet synchronization word error detection signal may be input to two received packets among the three consecutive same received packets, or the level difference between the average received power and the instantaneous received power may be incorrect. In this case, a reception buffer output in which reception packets other than the two reception packets are accumulated is selected and output as it is as multi-level reception digital audio data.

(4) In all three reception packets of the same three consecutive reception packets, the packet synchronization word error detection signal is input or the level difference between the average reception power and the instantaneous reception power becomes improper. In this case, all multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

Variable threshold multi-valued data determination unit 70
Reference numeral 2 is linked to the number of inputs of the input selecting / synthesizing unit 701 to change to an appropriate multilevel threshold to perform threshold determination, and output received digital voice data. In addition, especially 3
In three consecutive received packets,
The packet synchronization word error detection signal may be input, or mute may be performed when the level difference between the average received power and the instantaneous received power becomes improper.

With the above configuration, it is possible to perform higher quality wireless voice communication.

(Ninth Embodiment) FIG. 10 is a block diagram of a radio apparatus according to a ninth embodiment of the present invention. The present embodiment is configured to combine the fourth embodiment and the seventh embodiment. 10 to 25, 502 to 504 and 601 are the same as those in FIG. 8, and 301 is the same as that in FIG. In addition to the packet sync word error detection signal, 801 uses the header CRC error detection signal to perform synthesis in the same manner as the input selection / synthesis unit 602, or selects and synthesizes the multi-level reception buffer output to obtain multi-level reception digital audio data. Is an input selection / synthesis unit that outputs

Reference numeral 802 denotes a variable threshold multi-valued data determination unit that changes the appropriate multi-valued threshold in accordance with the number of inputs of the input selection synthesis unit 801, performs threshold determination, and outputs received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the seventh embodiment. The input selection / synthesis unit 801 performs processing in the following four cases according to the presence / absence of packet synchronization word error detection or header CRC error detection, and outputs data.

(1) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
If no error detection signal is input, all multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

(2) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
When one error detection signal is input, other received packets other than the received packet with the error were accumulated. 2
The outputs of the two multi-level reception buffers are added and combined and output as multi-level reception digital audio data.

(3) When two packet synchronization word error detection signals or two header CRC error detection signals are input in two received packets of three consecutive same received packets, received packets other than the corresponding two received packets are accumulated. Select the reception buffer output that has been selected and output it as it is as multi-level reception digital audio data.

(4) When three packet synchronization word error detection signals or three header CRC error detection signals are input in three reception packets of the same three consecutive reception packets, all multi-level reception buffer outputs are added and combined to obtain a multi-value reception buffer. Value reception Output as digital audio data.

Variable threshold multi-valued data determination unit 80
2 is linked to the number of inputs of the input selecting / synthesizing unit 801 and is changed to an appropriate multi-valued threshold to perform threshold determination, and outputs received digital voice data. In addition, especially 3
In three consecutive received packets,
Packet sync word error detection signal or header CRC
Muting may be performed when three error detection signals are input.

With the above-mentioned configuration, it is possible to perform higher quality wireless voice communication.

(Embodiment 10) FIG. 11 is a block diagram of a radio apparatus according to Embodiment 10 of the present invention. The present embodiment is configured to combine the eighth embodiment and the ninth embodiment. 1 to 25 and 502 to 50 in FIG.
4, 301 and 601 are the same as in FIG. 10, and 201 is the same as in FIG.

901 uses the packet synchronization word error detection signal, the header CRC error detection signal, and the level difference between the average received power and the instantaneous received power, and uses the input selection / synthesis unit 6
02 is an input selection / synthesis unit that performs synthesis in the same manner or selects and synthesizes multi-level reception buffer output, and outputs multi-level reception digital audio data.

Reference numeral 902 denotes a variable threshold multi-valued data determination unit which changes the appropriate multi-valued threshold in accordance with the number of inputs of the input selection / synthesis unit 901 to perform threshold determination and outputs received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences between the eighth embodiment and the ninth embodiment. The input selection synthesizing unit 901 performs processing in the following four cases according to the presence / absence of packet synchronization word error detection or header CRC error detection, and the level difference between average received power and instantaneous received power, and outputs data.

(1) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
No error detection signal is input, and the average received power unit 201
When the level difference between the average received power of the output and the instantaneous received power of the output of the reception wireless unit 13 is appropriate (within the reception threshold), all the multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data. To do.

(2) In three consecutive same received packets,
Packet sync word error detection signal or header CRC
If one error detection signal is input or one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold) occurs, other received packets other than the corresponding received packet The two accumulated multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

(3) In two received packets of three consecutive same received packets, the packet sync word error detection signal or the header CRC error detection signal is input, or the level difference between the average received power and the instantaneous received power becomes incorrect. When a reception packet occurs, a reception buffer output in which reception packets other than the corresponding two reception packets are accumulated is selected and output as it is as multi-level reception digital audio data.

(4) In three consecutive reception packets of the same three consecutive reception packets, the packet synchronization word error detection signal or the header CRC error detection signal is input, or the level difference between the average reception power and the instantaneous reception power becomes incorrect. When a reception packet is generated, all multi-level reception buffer outputs are added and combined and output as multi-level reception digital audio data.

Variable threshold multi-valued data determination section 90
Reference numeral 2 changes the appropriate multilevel threshold in conjunction with the number of inputs of the input selection / synthesis unit 901 to perform threshold determination, and outputs received digital voice data. In addition, especially 3
In three consecutive received packets,
Packet sync word error detection signal or header CRC
Muting may be performed when an error detection signal is input, or when a received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the reception threshold) occurs.

With the above configuration, it is possible to perform higher quality wireless voice communication.

(Embodiment 11) FIG. 12 is a block diagram of a radio apparatus according to Embodiment 11 of the present invention. This embodiment is configured such that a packet having the same content is transmitted and received three times in the first embodiment, but a smaller number of packets and less power consumption can be realized by transmitting and receiving twice. is there. A packet having a configuration as shown in FIG. 16 will be transmitted. In addition, f (n) in FIG.
Refers to the frequency channel. 12 to 25 are the same as FIG. 1, and 101 is the same as FIG. 1 to 15, 17, 18, 20 to 25 in FIG. 12 are the same as those in FIG. 1, and 101 in FIG. 12 is the same as that in FIG.

In the configuration of FIG. 12, the number of transmission / reception buffers is 2.
It will be configured individually. Note that the two transmission buffers may be one transmission buffer, and the same bit of the transmission digital audio data may be inserted in the same bit position of the two packets. Further, the two reception buffers are set as one reception buffer, and the second reception packet of the same reception packet that is continuously received twice is matched with the bit timing output from the packet dividing unit 18, and the first packet is A configuration may be adopted in which the output of the stored reception buffer or the output of the packet division unit 18 from which the second received packet is output is selected.

A transmission buffer control unit 1001 controls the transmission buffer a3 and the transmission buffer b4. 1
A reception buffer control unit 002 controls the reception buffer a20 and the reception buffer b21. A selection unit 1003 selects the output of the reception buffer a20 or b21 and outputs the reception digital audio data.

The operation of the radio apparatus configured as described above will be described only for the differences from the first embodiment.

The transmission digital voice data is controlled by the transmission buffer control unit 1001, and the same transmission digital voice data is accumulated in the transmission buffer a3 and the transmission buffer b4 which perform division and speed conversion to put it in a specific packet for each fixed length. It When the same transmission digital voice data is accumulated in the transmission buffer a3 and the transmission buffer b4 in a fixed length, the transmission buffer control unit 1001 converts the transmission digital voice data of the transmission buffer a3 and the transmission buffer b4 into a speed by the packet generation unit 8. Transfer sequentially. Packet division unit 1
The received packet divided into packets at the output of 8 is controlled by the receiving buffer control unit 1002,
0 and the receiving buffer b21 are sequentially accumulated, converted in speed, and output.

The selection unit 1003 performs processing in the following three cases according to the presence / absence of packet synchronization word error detection, and outputs data.

(1) In two consecutive same received packets,
When the packet synchronization word error detection signal is not input, either the reception buffer a20 or the reception buffer b21 is selected and output as reception digital audio data.

(2) In two consecutive same received packets,
When one packet sync word error detection signal is input, a reception buffer output in which reception packets other than the corresponding reception packet are accumulated is selected and output as it is as reception digital audio data.

(3) When the packet synchronization word error detection signal is input in two reception packets of the same two consecutive reception packets, either the reception buffer a20 or the reception buffer b21 is selected and output as reception digital audio data.

With the above-mentioned configuration, it is possible to perform high-quality wireless voice communication with a smaller number of used packets as compared with the first embodiment, and as a result, it is possible to reduce power consumption and effectively use empty packets. Becomes

(Embodiment 12) FIG. 13 is a block diagram of a radio apparatus according to Embodiment 12 of the present invention. The present embodiment is configured to combine the third embodiment and the eleventh embodiment. 1 to 15, 17, 1 in FIG.
8, 20 to 25, 101, 1001 and 1002 are shown in FIG.
2 and 201 in FIG. 13 are the same as those in FIG.

1101 utilizes the packet synchronization word error detection signal and the level difference between the average received power and the instantaneous received power to receive buffer a20 or receive buffer b2.
This is a selection unit that selects the output of 1 and outputs the received digital audio data.

The operation of the radio apparatus configured as described above will be described only for the differences from the eleventh embodiment. The selection unit 1101 performs processing in the following three cases according to the presence / absence of packet synchronization word error detection and the level difference between the average received power and the instantaneous received power, and outputs data (1) 2 consecutive identical received packets If the packet sync word error detection signal is not input and the level difference between the average received power and the instantaneous received power is appropriate (within the reception threshold), the received level difference between the average received power and the instantaneous received power is smaller. Select the receiving buffer that stores the packet and output it as the receiving digital audio data.

(2) In two consecutive same received packets,
Input one packet sync word error detection signal,
If there is one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold), select the receive buffer output in which received packets other than the corresponding received packet are accumulated, and receive as it is. Output as digital audio data.

(3) Muting is performed when a packet synchronization word error detection signal is input to two received packets of two consecutive same received packets or when the level difference between the average received power and the instantaneous received power is inappropriate. Alternatively, a reception buffer accumulating reception packets with a smaller level difference between the average reception power and the instantaneous reception power is selected and output as reception digital audio data.

With the above configuration, it is possible to perform radio voice communication of higher quality than that of the eleventh embodiment.

(Embodiment 13) FIG. 14 is a block diagram of a radio apparatus according to Embodiment 13 of the present invention. The present embodiment is configured to combine the fourth embodiment and the eleventh embodiment. 1 to 15, 18, 20 of FIG.
25, 101, 1001 and 1002 are the same as in FIG. 12, and 301 in FIG. 14 is the same as in FIG. 1201
Is a selection unit that selects the output of the reception buffer a20 or the reception buffer b21 using the packet synchronization word error detection signal and the header CRC error detection signal, and outputs the reception digital audio data.

The operation of the radio apparatus configured as described above will be described only for the differences from the eleventh embodiment. The selection unit 1201 performs processing in the following three cases according to the presence / absence of packet synchronization word error detection and the presence / absence of a header CRC error detection signal, and outputs data.

(1) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
If no error detection signal is input, the receive buffer a
20 or the reception buffer b21 is selected and output as reception digital audio data.

(2) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
When one error detection signal is input, the reception buffer output in which reception packets other than the corresponding reception packet are accumulated is selected and output as it is as reception digital audio data.

(3) When a packet sync word error detection signal or a header CRC error detection signal is input in two received packets of two consecutive same received packets,
Muting is performed or one of the reception buffer a20 and the reception buffer b21 is selected and output as reception digital audio data.

With the above configuration, it is possible to perform radio voice communication of higher quality than that of the eleventh embodiment.

(Embodiment 14) FIG. 15 is a block diagram of a radio apparatus according to Embodiment 14 of the present invention. The present embodiment is configured to combine the fifth embodiment and the eleventh embodiment. 1 to 15, 18, 20 of FIG.
25, 101, 301, 1001 and 1002 are shown in FIG.
4, and 201 in FIG. 15 is the same as in FIG.

1301 uses the packet sync word error detection signal, the header CRC error detection signal, and the level difference between the average reception power and the instantaneous reception power to select the output of the reception buffer a20 or the reception buffer b21, It is a selection unit that outputs audio data.

The operation of the radio apparatus configured as described above will be described only for the differences from the eleventh embodiment. The selection unit 1301 operates as follows.

(1) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
If the error detection signal is not input and the level difference between the average received power and the instantaneous received power is appropriate (within the reception threshold), received packets with a smaller level difference between the average received power and the instantaneous received power are accumulated. Select the reception buffer that is present and output as reception digital audio data.

(2) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
If one error detection signal is input or one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold) occurs, received packets other than the corresponding received packets are accumulated. Select the received buffer output and output it as received digital audio data as it is.

(3) In two reception packets of two consecutive same reception packets, the packet synchronization word error detection signal is input, or the level difference between the average reception power and the instantaneous reception power is improper (above the reception threshold). If
Muting is performed or a reception buffer that stores reception packets with a smaller level difference between the average reception power and the instantaneous reception power is selected and output as reception digital audio data.

With the above configuration, it is possible to perform radio voice communication of higher quality than the eleventh embodiment, the twelfth embodiment and the thirteenth embodiment.

(Embodiment 15) FIG. 17 is a block diagram of a radio apparatus according to Embodiment 15 of the present invention. The present embodiment is based on the eleventh embodiment and performs data determination with multi-valued data. 1 to 14, 24, 2 in FIG.
5, 1001 and 1002 are the same as in FIG.
502, 503 and 601 are the same as in FIG.

In the receiving apparatus, the packet synchronization multi-valued word detection and detection error notifying unit 601 inputs the output of the demodulation unit 14 in a multi-valued state without judging the data and detects the packet synchronization word from the received packet. To detect. This packet synchronization multi-level word detection and detection error notification unit 601
Outputs the packet synchronization word detection signal when the packet synchronization word is normally detected, and outputs the packet synchronization word error detection signal when the packet synchronization word is not normally detected.

The reception packet control unit 17 performs control for dividing the reception data based on the packet synchronization word detection signal of the packet synchronization multi-level word detection and detection error notification unit 601. The packet division unit 18 removes the packet synchronization word and the header for each received packet under the control of the reception packet control unit 17.

1401 uses the packet synchronization word error detection signal to perform the same synthesis as the synthesis unit 505 shown in FIG. 7 or select one from the two multi-level reception buffer outputs,
It is an input selection / synthesis unit that outputs multilevel reception digital audio data.

Reference numeral 1402 denotes a variable threshold multi-valued data determination unit which outputs a received digital voice data by changing the multi-valued threshold to an appropriate multi-valued threshold in accordance with the number of inputs of the input selection / synthesis unit 1401 and outputting the received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the eleventh embodiment. The input selection / synthesis unit 1401 operates as follows.

(1) In two consecutive same received packets,
When the packet synchronization word error detection signal is not input, the multilevel reception buffer a502 and the multilevel reception buffer b5
The 03 output is added and synthesized as it is to output multilevel reception digital audio data.

(2) In two consecutive same received packets,
When one packet synchronization word error detection signal is input, the multilevel reception buffer output in which the reception packets other than the corresponding reception packets are accumulated is selected and output as it is as multilevel reception digital audio data.

(3) When the packet synchronization word error detection signal is input in two reception packets of the same two consecutive reception packets, all the multi-value reception buffer outputs are selected, added and synthesized, and multi-value reception digital audio data Is output.

Variable threshold multi-valued data determination unit 14
Reference numeral 02 changes the appropriate multilevel threshold in conjunction with the number of inputs of the input selection synthesizing unit 1401 to perform threshold determination, and outputs received digital voice data. It should be noted that mute may be performed particularly when the packet synchronization word error detection signal is input to two reception packets of the same two consecutive reception packets.

With the above-mentioned configuration, the effect of the determination by the maximum ratio combining that makes the best use of the frequency diversity and the time diversity effect can be obtained as compared with the eleventh embodiment, and higher quality wireless voice communication can be achieved. It will be possible.

(Embodiment 16) FIG. 18 is a block diagram of a radio apparatus according to Embodiment 16 of the present invention. The present embodiment is configured to combine the twelfth embodiment and the fifteenth embodiment. 1 to 14, 17, 1 in FIG.
8, 24, 25, 502, 503, 601, 1001 and 1002 are the same as those in FIG. 17, and 201 in FIG.
Is the same as 1501 uses the packet synchronization word error detection signal and the level difference between the average received power and the instantaneous received power to perform the same synthesis as in the synthesis unit 505 shown in FIG. 7 or to output one from two multilevel reception buffer outputs. Is an input selection / synthesis unit that selects and outputs multi-level reception digital audio data.

Reference numeral 1502 denotes a variable threshold multi-valued data determination unit which changes the appropriate multi-valued threshold to interlock with the number of inputs of the input selection / synthesis unit 1501 to perform threshold determination, and outputs received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the fifteenth embodiment.

The input selection / synthesis unit 1501 operates as follows.

(1) In two consecutive same received packets,
When the packet synchronization word error detection signal is not input and the level difference between the average received power and the instantaneous received power is appropriate (within the reception threshold), the multilevel reception buffer a5
02 and the output of the multi-level reception buffer b503 are added and synthesized as they are to output multi-level reception digital audio data.

(2) In two consecutive same received packets,
Input one packet sync word error detection signal,
If there is one received packet with an inappropriate level difference between the average received power and the instantaneous received power (more than the received threshold), select the multi-level receive buffer output in which received packets other than the corresponding received packet are accumulated, It is output as it is as multi-level reception digital audio data.

(3) In the two consecutive received packets of the same received packet, if the packet synchronization word error detection signal is input or the level difference between the average received power and the instantaneous received power is improper, all A value reception buffer output is selected, added and synthesized, and multi-value reception digital audio data is output.

Variable threshold multi-valued data determination unit 15
Reference numeral 02 changes the threshold to an appropriate multi-valued threshold in conjunction with the number of inputs of the input selection / synthesis unit 1501 to perform threshold determination, and outputs received digital audio data.

In particular, in two received packets of two consecutive same received packets, the packet synchronization word error detection signal is input, or if the level difference between the average received power and the instantaneous received power is improper, mute is performed. Alternatively, the output of the input selection / synthesis unit 1501 may be threshold-determined and output as received digital audio data.

With the above-mentioned structure, it is possible to perform radio voice communication of higher quality than that of the fifteenth embodiment.

(Embodiment 17) FIG. 19 is a block diagram of a radio apparatus according to Embodiment 17 of the present invention. This embodiment is configured to combine the thirteenth and fifteenth embodiments. 1 to 25, 502 of FIG.
503, 601, 1001 and 1002 are shown in FIGS.
1 is the same as FIG. 1601 uses the packet sync word error detection signal and the header CRC error detection signal to perform the same synthesis as the synthesis unit 505 shown in FIG.
It is an input selecting / synthesizing unit that selects one from the outputs of the multilevel reception buffer and outputs the multilevel reception digital audio data.
Reference numeral 1602 denotes a variable threshold multi-valued data determination unit that outputs a received digital voice data by changing the multi-valued threshold to an appropriate multi-valued threshold in association with the number of inputs of the input selection synthesis unit 1601 and outputting the received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the fifteenth embodiment.

The input selection / synthesis unit 1601 operates as follows.

(1) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
When no error detection signal is input, the multi-level reception buffer a 502 and the multi-level reception buffer b 503 outputs are added and synthesized as they are to output multi-level reception digital audio data.

(2) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
When one error detection signal is input, the multi-level reception buffer output in which reception packets other than the corresponding reception packet are accumulated is selected and output as it is as multi-level reception digital audio data.

(3) When a packet synchronization word error detection signal or a header CRC error detection signal is input in two reception packets of two consecutive same reception packets,
All the multilevel reception buffer outputs are selected, added and combined, and output as multilevel reception digital audio data.

Variable threshold multi-valued data determination unit 16
Reference numeral 02 changes the appropriate multilevel threshold in conjunction with the number of inputs of the input selection / synthesis unit 1601 to perform threshold determination, and outputs received digital audio data.

In particular, when the packet synchronization word error detection signal or the header CRC error detection signal is input in two received packets of two consecutive same received packets, muting is performed or the output of the input selection synthesis unit 1601 is threshold-determined. , May be output as received digital audio data.

With the above configuration, it is possible to perform radio voice communication of higher quality than that of the fifteenth embodiment.

(Embodiment 18) FIG. 20 is a block diagram of a radio apparatus according to Embodiment 18 of the present invention. In this embodiment, the sixteenth embodiment and the seventeenth embodiment are combined together. 1 to 25, 502 of FIG.
503, 301, 601, 1001 and 1002 are shown in FIG.
Reference numerals 9 and 201 are the same as those in FIG. 1701 uses the packet synchronization word error detection signal, the header CRC error detection signal, and the level difference between the average received power and the instantaneous received power to perform a synthesis similar to the synthesis unit 505 shown in FIG.
It is an input selection / synthesis unit that selects one from two multi-level reception buffer outputs and outputs multi-level reception digital audio data.

Reference numeral 1702 denotes a variable threshold multi-valued data determination unit which outputs a received digital voice data by changing the multi-valued threshold to an appropriate multi-valued threshold in accordance with the number of inputs of the input selection / synthesis unit 1701 and outputting the received digital voice data.

The operation of the radio apparatus configured as described above will be described only for the differences from the fifteenth embodiment.

The input selection / synthesis unit 1701 operates as follows.

(1) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
If the error detection signal is not input and the level difference between the average received power and the instantaneous received power is appropriate (within the reception threshold), the multi-level reception buffer a502 and the multi-level reception buffer b503 outputs are added and combined as they are, Value reception Outputs digital audio data.

(2) In two consecutive same received packets,
Packet sync word error detection signal or header CRC
If one error detection signal is input or one received packet in which the level difference between the average received power and the instantaneous received power is improper (more than the received threshold) occurs, received packets other than the corresponding received packets are accumulated. The multi-level reception buffer output is selected and output as it is as multi-level reception digital audio data.

(3) In two received packets of two consecutive same received packets, input the packet sync word error detection signal or the header CRC error detection signal, or the level difference between the average received power and the instantaneous received power is improper (received If it is equal to or more than the threshold), all the multilevel reception buffer outputs are selected, added and synthesized, and output as multilevel reception digital audio data.

Variable threshold multi-valued data determination unit 17
Reference numeral 02 changes the appropriate multilevel threshold in conjunction with the number of inputs of the input selection / synthesis unit 1701 to perform threshold determination, and outputs received digital audio data.

[0212] Especially, in two received packets of two consecutive same received packets, the packet sync word error detection signal or the header CRC error detection signal is input, or the level difference between the average received power and the instantaneous received power is improper (received If it is equal to or higher than the threshold), the output may be muted or the output of the input selecting / synthesizing unit 1701 may be threshold-determined and output as received digital audio data.

With the above-mentioned structure, it is possible to reduce the difference from the fifteenth embodiment, the sixteenth embodiment and the seventeenth embodiment.
Further, high quality wireless voice communication becomes possible.

(Embodiment 19) FIG. 21 is a block diagram of a high quality radio apparatus according to Embodiment 19 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 1 has a lower rate. The lowering of the transmission / reception codec means, for example, 32 kbps when the rate is reduced from 64 kbps to 1/2.

FIG. 22 shows a packet configuration in which the transmission / reception Codec is halved, and three packets having the same content are formed as in the first embodiment, and f (n) indicates a frequency channel. The arrangement of the three packets having the same content does not have to be continuous, and may be arranged in any manner within the 12-packet period. However, the packet timing is notified to the receiver using the header or the like. There is a need. 21 to 25 are the same as those in FIG.

Reference numeral 1801 is a low-rate transmission codec for converting the analog voice data of the microphone 1 output to the transmission codec of FIG. 1 at a low rate and converted into transmission digital voice data by an appropriate algorithm, and 1802 is a low-rate transmission codec.
In response to the 1801 output, a transmission buffer control unit that controls the transmission buffers a3, b4, and c5, and 1803 outputs the output of the packet dividing unit 18 to the reception buffers a20 and b21.
And c22, the speed is converted to the speed of the low-rate reception Codec 1805, and the reception buffer control unit 1804 controls the output of each reception buffer to make a majority decision by the majority decision unit 1804 bit by bit.
A majority decision unit that makes a majority decision for each bit of the outputs of b21 and c22 and outputs received digital audio data,
Reference numeral 1805 denotes a low-rate reception codec that converts received digital voice data into analog voice data by an algorithm corresponding to the low-rate transmission codec 1801.

This embodiment is the transmission Cod of the first embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speed. With the above configuration, it is possible to effectively use the packet and reduce the power consumption as compared with the first embodiment.

For example, in a system in which the maximum number of simultaneous calls is three, when one terminal carries out packet transmission / reception of the same content three times, there is no space and other terminals cannot talk at the same time. However, if the transmission / reception codec is reduced to, for example, 1/3, the interval between the packets used for communication with a certain terminal becomes three times longer, and as a result, the packet occupied by one caller is increased. Also 1 /
Can be 3. Moreover, even if the same content packet is transmitted and received three times, the maximum number of simultaneous calls can be three.

If the rate is lowered in this way, the packet occupancy rate can be reduced, the number of empty packets increases, and other systems can use the empty packets, so that the packets can be effectively used. Moreover, low power consumption is possible.

(Embodiment 20) FIG. 23 is a block diagram of a radio apparatus according to Embodiment 20 of the present invention. In this embodiment, the transmission / reception codec of the second embodiment has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 23 of FIG.
25, 1801, 1802, 1803, 1805 are the same as FIG. 21, and 101 is the same as FIG. Reference numeral 1901 denotes an input selection majority decision unit that operates at the same speed as the input selection majority decision unit 102 in FIG. 3 at the speed of the low rate reception Codec 1805.

The present embodiment is the transmission Cod of the second embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use the packet and reduce the power consumption as compared with the second embodiment.

(Embodiment 21) FIG. 24 is a block diagram of a radio apparatus according to Embodiment 21 of the present invention. In this embodiment, the transmission / reception codec of the third embodiment has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. FIG. 24, 1
25, 1801, 1802, 1803, 1805 and 101 are the same as FIG. 23 and 201 is the same as FIG. 2001
Is a decision unit based on majority and received power, which operates at the same speed as the decision unit 202 based on majority and received power in FIG. 4 at the speed of the low rate reception Codec 1805.

The present embodiment is the transmission Cod of the third embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use the packet and reduce the power consumption as compared with the third embodiment.

(Embodiment 22) FIG. 25 is a block diagram of a radio apparatus according to Embodiment 22 of the present invention. In the present embodiment, the transmission / reception codec of Embodiment 4 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. FIG. 25, 1
25, 1801, 1802, 1803, 1805 and 101 are the same as FIG. 23, and 301 is the same as FIG. 2101
Is a decision unit based on majority and header CRC errors, which operates at the same rate as the decision unit 302 based on majority and header CRC errors in FIG.

The present embodiment is the transmission Cod of the fourth embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use packets and reduce power consumption as compared with the fourth embodiment.

(Embodiment 23) FIG. 26 is a block diagram of a radio apparatus according to Embodiment 23 of the present invention. In this embodiment, the transmission / reception codec of the fifth embodiment has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 26 of FIG.
~ 25, 1801, 1802, 1803, 1805, 1
01 and 301 are the same as FIG. 25, and 201 is the same as FIG. Reference numeral 2201 denotes the speed of the low-rate reception Codec 1805, which performs the same operation as the majority voting, header CRC error and received power determination unit 401 of FIG.
It is a determination unit based on C error and received power.

The present embodiment is the transmission Cod of the fifth embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use the packet and reduce the power consumption as compared with the fifth embodiment.

(Embodiment 24) FIG. 27 is a block diagram of a radio apparatus according to Embodiment 24 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 6 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 27 of FIG.
25 to 501 to 504 are shown in FIGS.
Reference numerals 1803 and 1805 are the same as those in FIG. Reference numeral 2301 denotes a combining unit that operates at the same speed as the combining unit 505 in FIG. 7 at the speed of the low rate reception Codec 1805. Reference numeral 2302 denotes the speed of the low-rate reception Codec 1805, which is a multilevel data determination unit that operates in the same manner as 506 in the multilevel data determination unit in FIG.

The present embodiment is the transmission Cod of the sixth embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use packets and reduce power consumption as compared with the sixth embodiment.

(Embodiment 25) FIG. 28 is a block diagram of a radio apparatus according to Embodiment 25 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 7 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. FIG. 28, 1
25, 502-504 and 601 are shown in FIG.
Reference numerals 1802, 1803, and 1805 are the same as those in FIG.
2401 is the speed of the low rate reception Codec 1805,
This is an input selection combining unit combining unit that operates in the same manner as the input selection combining unit 602 in FIG. 2402 is a low rate reception code
This is a variable threshold multi-valued data determination unit that operates at the speed of c1805 and operates in the same manner as the variable threshold multi-valued data determination unit 603 of FIG.

The present embodiment is the transmission Cod of the seventh embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use the packet and reduce the power consumption as compared with the seventh embodiment.

(Embodiment 26) FIG. 29 is a block diagram of a radio apparatus according to Embodiment 26 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 8 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 29 of 1
25, 502-504, 201 and 601 are shown in FIGS.
Reference numerals 801, 1802, 1803, and 1805 are the same as those in FIG. Reference numeral 2501 denotes an input selection / synthesis unit that operates at the same speed as the input selection / synthesis unit 701 in FIG. 9 at the speed of the low-rate reception Codec 1805. 2502 is a low rate reception Cod
This is a variable threshold multi-valued data determination unit that operates in the same manner as the variable threshold multi-valued data determination unit 702 of FIG. 9 at the speed of ec1805.

The present embodiment is the transmission Cod of the eighth embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use packets and reduce power consumption as compared with the eighth embodiment.

(Embodiment 27) FIG. 30 is a block diagram of a radio apparatus according to Embodiment 27 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 9 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 1 of FIG.
25, 502 to 504, 301 and 601 are shown in FIG.
Reference numerals 1801, 1802, 1803, and 1805 are the same as those in FIG. 2601 is a low-rate reception Codec 1805.
The input selection / synthesis unit operates at the same speed as the input selection / synthesis unit 801 in FIG. 2602 is a low rate reception C
This is a variable threshold multi-valued data determination unit that performs the same operation as the variable threshold multi-valued data determination unit 802 of FIG. 10 at the speed of odec 1805.

This embodiment is the transmission Cod of the ninth embodiment.
The rate of the ec2 and the reception Codec 24 is reduced, and packet transmission / reception is performed according to the speeds. With the above configuration, it is possible to effectively use packets and reduce power consumption as compared with the ninth embodiment.

(Embodiment 28) FIG. 31 is a block diagram of a radio apparatus according to Embodiment 28 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 10 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 31 of FIG.
25, 502-504, 201, 301 and 601 are the same as FIG. 11, 1801, 1802, 1803 and 1805 are the same as FIG. 2701 is a low-rate reception codec
The input selection / synthesis unit operates at the speed of 1805 and operates in the same manner as the input selection / synthesis unit 901 in FIG. 11. Reference numeral 2702 denotes a speed of the low rate reception Codec 1805, which is a variable threshold multi-valued data determination unit that operates in the same manner as the variable threshold multi-valued data determination unit 902 of FIG.

The present embodiment is the transmission Co of the tenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to effectively use packets and reduce power consumption as compared with the tenth embodiment.

(Embodiment 29) FIG. 32 is a block diagram of a radio apparatus according to Embodiment 29 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 11 has a lower rate. As a result, even in the nineteenth embodiment, the number of empty transmission / reception packets is further increased, and it is possible to further effectively use the empty packets and reduce the power consumption. FIG. 36 shows a packet configuration in which the transmission / reception Codec is halved and two packets having the same content are formed as in the eleventh embodiment, and f (n) indicates a frequency channel. 1 to 25 and 101 in FIG. 32 are shown in FIG.
1805 is the same as FIG. Reference numeral 2801 denotes a transmission buffer control unit that controls the transmission buffers a3 and b4 at the speed of the low rate transmission Codec 1801, and 2802 outputs the output of the packet division unit 18 sequentially to the reception buffers a20 and b.
21 and a receiving buffer control unit for controlling the output of each receiving buffer and the selecting unit 2803 at the speed of the low rate receiving Codec 1805;
This is a selection unit that operates at the speed of dec1805 and is the same as the selection unit 1003 in FIG.

The present embodiment is the transmission Co of the eleventh embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the eleventh and nineteenth embodiments.

(Embodiment 30) FIG. 33 is a block diagram of a radio apparatus according to Embodiment 30 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 12 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 33 of 1
25, 101 and 201 are shown in FIGS.
5, 2801 and 2802 are the same as those in FIG. 29
01 is the speed of the low rate reception Codec 1805, which is shown in FIG.
3 is a selecting unit that operates in the same manner as the selecting unit 1101.

This embodiment is the transmission Co of the twelfth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the twelfth and nineteenth embodiments.

(Embodiment 31) FIG. 34 is a block diagram of a radio apparatus according to Embodiment 31 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 13 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 34 of 1
25, 101 and 301 are shown in FIGS.
5, 2801 and 2802 are the same as those in FIG. Thirty
01 is the speed of the low rate reception Codec 1805, which is shown in FIG.
4 is a selecting unit that performs the same operation as the selecting unit 1201.

This embodiment is the transmission Co of the thirteenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the thirteenth and nineteenth embodiments.

(Embodiment 32) FIG. 35 is a block diagram of a radio apparatus according to Embodiment 32 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 14 has a lower rate. As a result, the packet utilization rate is reduced, the number of empty transmission / reception packets is relatively increased, and it is possible to effectively use the empty packets and reduce the power consumption. 35 of 1
25, 101, 201 and 301 are shown in FIG.
1, 1805, 2801 and 2802 are the same as those in FIG. Reference numeral 3101 denotes the speed of the low rate reception Codec 1805, which is a selection unit that operates in the same manner as the selection unit 1301 in FIG.

This embodiment is the transmission Co of the fourteenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the fourteenth and nineteenth embodiments.

(Embodiment 33) FIG. 37 is a block diagram of a radio apparatus according to Embodiment 33 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 15 has a lower rate. As a result, even in the nineteenth embodiment, the number of empty transmission / reception packets is further increased, more effective use of the empty packets and lower power consumption are possible, and the determination effect by the maximum ratio combination is further obtained. 1 to 25, 502, 503 and 601 in FIG.
1, 1805, 2801 and 2802 are the same as those in FIG. Reference numeral 3201 denotes an input selection / combination unit that operates at the same speed as the input selection / combination unit 1401 in FIG. 17 at the speed of the low rate reception Codec 1805. 3202 is a low rate reception Co
This is a variable threshold multi-valued data determination unit that operates at the speed of dec 1805 and operates in the same manner as the variable threshold multi-valued data determination unit 1402 of FIG.

The present embodiment is the transmission Co of the fifteenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the fifteenth and nineteenth embodiments.

(Embodiment 34) FIG. 38 is a block diagram of a radio equipment according to Embodiment 34 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 16 has a lower rate. As a result, even in the nineteenth embodiment, the number of empty transmission / reception packets is further increased, more effective use of the empty packets and lower power consumption are possible, and the determination effect by the maximum ratio combination is further obtained. 1 to 25, 502, 503, and 601 in FIG.
1, 1805, 2801 and 2802 are the same as those in FIG. Reference numeral 3301 denotes the speed of the low rate reception codec 1805, and the input selection synthesis section 3302 that operates in the same manner as the input selection synthesis section 1501 of FIG.
This is a variable threshold multi-valued data determination unit that operates at the speed of 1805 and operates in the same manner as the variable threshold multi-valued data determination unit 1502 of FIG.

The present embodiment is the transmission Co of the sixteenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the sixteenth and nineteenth embodiments.

(Embodiment 35) FIG. 39 is a block diagram of a radio apparatus according to embodiment 35 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 17 has a lower rate. As a result, even in the nineteenth embodiment, the number of empty transmission / reception packets is further increased, more effective use of the empty packets and lower power consumption are possible, and the determination effect by the maximum ratio combination is further obtained. 1 to 25, 502, 503, 301 and 601 in FIG.
9, 1801, 1805, 2801 and 2802 are shown in FIG.
Same as 2. 3401 is a low-rate reception Codec1
The input selection / synthesis unit operates at the speed of 805 and operates in the same manner as the input selection / synthesis unit 1601 in FIG. Reference numeral 3402 denotes a variable threshold multi-valued data determination unit that operates at the same speed as the variable threshold multi-valued data determination unit 1602 of FIG. 19 at the speed of the low rate reception Codec 1805.

The present embodiment is the transmission Co of the seventeenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the seventeenth and nineteenth embodiments.

(Embodiment 36) FIG. 40 is a block diagram of a radio equipment according to Embodiment 36 of the present invention. In this embodiment, the transmission / reception codec of Embodiment 18 has a lower rate. As a result, even in the nineteenth embodiment, the number of empty transmission / reception packets is further increased, more effective use of the empty packets and lower power consumption are possible, and the determination effect by the maximum ratio combination is further obtained. 1 to 25, 502, 503, 201, 301 and 601 in FIG.
20, 1801, 1805, 2801 and 2802
Is the same as in FIG. 3501 is a low rate reception Cod
20 at the speed of ec1805.
This is an input selection / synthesis unit that performs the same operation as 1. Reference numeral 3502 denotes a variable threshold multi-level data determination unit that operates at the same speed as the variable threshold multi-level data determination unit 1702 of FIG. 20 at the speed of the low rate reception Codec 1805.

This embodiment is the transmission Co of the eighteenth embodiment.
The dec2 and the reception Codec 24 have a low rate, and are configured to perform packet transmission / reception according to the speeds. With the above configuration, it is possible to further effectively use the packet and reduce the power consumption as compared with the eighteenth and nineteenth embodiments.

[0254]

As described above, according to the present invention, in the wireless device in which the radio frequency channel is changed for each transmitted / received packet, the transmitter side is provided with means for transmitting the packet of the same content a plurality of times, and the receiver is provided. In the system where the transmission / reception frequency hops for each packet, there is a time diversity and frequency diversity effect by providing a majority decision means for making a majority decision on the bit data at the same position in the packet of the same content received multiple times on the side. Depending on the maximum ratio combination, there is an effect of highly reliable data determination, a reduction in packet utilization rate, and a reduction in power consumption, and as a result, high quality voice communication is possible.

Even if one of the three received packets is erroneous due to the influence of the interference wave, high quality wireless communication can be performed by making a majority decision.

Further, it becomes possible to exclude an unreliable received packet from the object of majority decision by using the error of the packet synchronization word as an index for the three received packets.

Further, it is possible to exclude an unreliable received packet from the majority decision by using the error of the packet synchronization word for the three received packets and the level difference between the instantaneous received power and the average received power as indexes. Has the effect of becoming.

Further, with respect to the three received packets, the packet synchronization word error and the header CRC error are used as indexes to remove the unreliable received packets from the majority decision targets.

With respect to the three received packets, the packet synchronization word error, the header CRC error, and the level difference between the instantaneous received power and the average received power are used as indexes to exclude the unreliable received packets from the majority decision. It becomes possible.

Further, the effect of time diversity and frequency diversity can be further enhanced.

Further, the determination by the maximum ratio combination can be performed, and the effect of time diversity and frequency diversity can be maximized.

Further, it is possible to exclude an unreliable received packet from the target of the determination of the maximum ratio combination by using the error of the packet synchronization word as an index for the three received packets.

Also, with respect to the three received packets, using the error of the packet synchronization word and the level difference between the instantaneous received power and the average received power as an index, the unreliable received packets are excluded from the target of the maximum ratio combining determination. Is possible.

Further, it is possible to exclude the unreliable received packet from the target of the maximum ratio combining determination by using the error of the packet synchronization word and the header CRC error for the three received packets.

For the three received packets, the packet synchronization word error, the header CRC error, and the level difference between the instantaneous received power and the average received power are used as indicators to judge the unreliable received packets for maximum ratio combining. It is possible to remove it from the target.

Further, it is possible to exclude an unreliable received packet from the selection judgment targets by using the error of the packet synchronization word as an index for the two received packets.

Further, it is possible to exclude an unreliable received packet from the selection judgment targets by using as an index the error of the packet synchronization word and the level difference between the instantaneous received power and the average received power for the two received packets. Become.

Further, it is possible to exclude the reception packet having low reliability from the selection judgment targets by using the error of the packet synchronization word and the header CRC error for the two reception packets.

With respect to the two received packets, the packet synchronization word error, the header CRC error, and the level difference between the instantaneous received power and the average received power are used as indexes to exclude the unreliable received packets from the selection judgment targets. It becomes possible.

Further, it is possible to exclude an unreliable received packet from the target of multi-valued data determination by using the error of the packet synchronization word for two received packets as an index.

Further, it is possible to exclude an unreliable received packet from the target of multi-valued data determination by using the error of the packet synchronization word for the two received packets and the level difference between the instantaneous received power and the average received power as indexes. It will be possible.

Further, there is an effect that it is possible to exclude a low-reliability received packet from the target of multi-valued data determination by using the error of the packet synchronization word and the header CRC error as an index for the two received packets.

With respect to the two received packets, the packet synchronization word error, the header CRC error, and the level difference between the instantaneous received power and the average received power are used as indexes, and the unreliable received packets are subjected to multilevel data determination. It is possible to remove from.

In addition, the interval between packets to be used is lengthened,
It is possible to reduce the packet occupancy rate, and as a result, it is possible to effectively use empty packets and reduce power consumption.

[Brief description of drawings]

FIG. 1 is a block diagram of a wireless device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a transmission packet according to the first to tenth embodiments of the present invention.

FIG. 3 is a block diagram of a wireless device according to a second embodiment of the present invention.

FIG. 4 is a block diagram of a wireless device according to a third embodiment of the present invention.

FIG. 5 is a block diagram of a wireless device according to a fourth embodiment of the present invention.

FIG. 6 is a block diagram of a wireless device according to a fifth embodiment of the present invention.

FIG. 7 is a block diagram of a wireless device according to a sixth embodiment of the present invention.

FIG. 8 is a block diagram of a wireless device according to a seventh embodiment of the present invention.

FIG. 9 is a block diagram of a wireless device according to an eighth embodiment of the present invention.

FIG. 10 is a block diagram of a wireless device according to a ninth embodiment of the present invention.

FIG. 11 is a block diagram of a wireless device according to a tenth embodiment of the present invention.

FIG. 12 is a block diagram of a wireless device according to an eleventh embodiment of the present invention.

FIG. 13 is a block diagram of a wireless device according to a twelfth embodiment of the present invention.

FIG. 14 is a block diagram of a wireless device according to a thirteenth embodiment of the present invention.

FIG. 15 is a block diagram of a wireless device according to a fourteenth embodiment of the present invention.

FIG. 16 is a configuration diagram of a transmission packet in Embodiments 11 to 18 of the present invention.

FIG. 17 is a block diagram of a wireless device according to a fifteenth embodiment of the present invention.

FIG. 18 is a block diagram of a wireless device according to a sixteenth embodiment of the present invention.

FIG. 19 is a block diagram of a wireless device according to a seventeenth embodiment of the present invention.

FIG. 20 is a block diagram of a wireless device according to an eighteenth embodiment of the present invention.

FIG. 21 is a block diagram of a wireless device according to a nineteenth embodiment of the present invention.

FIG. 22 is a transmission packet configuration diagram according to the nineteenth to twenty-eighth embodiments of the present invention.

FIG. 23 is a block diagram of a wireless device according to a twentieth embodiment of the present invention.

FIG. 24 is a block diagram of a wireless device according to a twenty-first embodiment of the present invention.

FIG. 25 is a block diagram of a wireless device according to a twenty-second embodiment of the present invention.

FIG. 26 is a block diagram of a wireless device according to Embodiment 23 of the present invention.

FIG. 27 is a block diagram of a wireless device according to Embodiment 24 of the present invention.

FIG. 28 is a block diagram of a wireless device according to a twenty-fifth embodiment of the present invention.

FIG. 29 is a block diagram of a wireless device according to a twenty-sixth embodiment of the present invention.

FIG. 30 is a block diagram of a wireless device according to a twenty-seventh embodiment of the present invention.

FIG. 31 is a block diagram of a wireless device according to a twenty-eighth embodiment of the present invention.

FIG. 32 is a block diagram of a wireless device according to a twenty-ninth embodiment of the present invention.

FIG. 33 is a block diagram of a wireless device according to a thirtieth embodiment of the present invention.

FIG. 34 is a block diagram of a wireless device according to Embodiment 31 of the present invention.

FIG. 35 is a block diagram of a wireless device according to a thirty-second embodiment of the present invention.

FIG. 36 is a transmission packet configuration diagram according to any of Embodiments 29 to 36 of the present invention.

FIG. 37 is a block diagram of a wireless device according to a thirty-third embodiment of the present invention.

FIG. 38 is a block diagram of a wireless device according to a thirty-fourth embodiment of the present invention.

FIG. 39 is a block diagram of a wireless device according to a thirty-fifth embodiment of the present invention.

FIG. 40 is a block diagram of a wireless device according to a thirty-sixth embodiment of the present invention.

FIG. 41 is a block diagram of a conventional wireless device.

FIG. 42 is a configuration diagram of a transmission packet when a conventional error correction code is not added

FIG. 43 is a configuration diagram of a transmission packet when a conventional error correction code is added

[Explanation of symbols]

1 microphone 2 transmission Codec 3 transmission buffer a 4 transmission buffer b 5 transmission buffer c 6 transmission packet control unit 7 transmission buffer control unit 8 packet generation unit 9 modulation unit 10 transmission radio unit 11 transmission antenna 12 reception antenna 13 reception radio unit 14 demodulation Unit 15 data determination unit 16 packet synchronization word detection unit 17 reception packet control unit 18 packet division unit 19 reception buffer control unit 20 reception buffer a 21 reception buffer b 22 reception buffer c 23 majority decision unit 24 reception Codec 25 speaker 101 packet synchronization word Detection and detection error notification unit 102 Input selection majority decision unit 201 Average received power unit 202 Majority decision and received power decision unit 301 Received packet control and header CRC error notification unit 302 Majority decision and header CRC error decision unit 01 Majority decision, header CRC error and reception power determination unit 501 packet synchronization multi-valued word detection unit 502 multi-level reception buffer a 503 multi-level reception buffer b 504 multi-level reception buffer c 505 synthesis unit 506 multi-level data determination unit 601 packet synchronization Multi-valued word detection and detection error notification unit 602 Input selection combining unit 603 Variable threshold multi-valued data judgment unit 701 Input selection combining unit 702 Variable threshold multi-valued data judgment unit 801 Input selection combining unit 802 Variable threshold multi-valued data judgment unit 901 Input Selective combiner 902 Variable threshold multi-valued data determiner 1001 Transmission buffer controller 1002 Receive buffer controller 1003 Selector 1101 Selector 1201 Selector 1301 Selector 1401 Input selection combiner 1402 Variable threshold multi-valued Data selection unit 1501 input selection combining unit 1502 variable threshold multi-valued data judgment unit 1601 input selection combining unit 1602 variable threshold multi-valued data judgment unit 1701 input selection combining unit 1702 variable threshold multi-valued data judgment unit 1801 low rate transmission Codec 1802 transmission Buffer control unit 1803 Reception buffer control unit 1804 Majority decision unit 1805 Low rate reception Codec 1901 Input selection Majority decision unit 2001 Majority decision and received power decision unit 2101 Majority decision and Header CRC error decision unit 2201 Majority decision, Header CRC error and received power Judgment unit 2301 Combiner 2302 Multivalued data judgment unit 2401 Input selection combiner 2402 Variable threshold multivalued data judgment unit 2501 Input selection combiner 2502 Variable threshold Multi-valued data determination unit 2601 input selection synthesis unit 2602 variable threshold multi-valued data determination unit 2701 input selection synthesis unit 2702 variable threshold multi-valued data determination unit 2801 transmission buffer control unit 2802 reception buffer control unit 2803 selection unit 2901 selection unit 3001 selection Unit 3101 Selection unit 3201 Input selection combining unit 3202 Variable threshold multi-valued data determination unit 3301 Input selection combining unit 3302 Variable threshold multi-valued data determination unit 3401 Input selection combining unit 3402 Variable threshold multi-valued data determination unit 3501 Input selection combining unit 3502 Variable Threshold multi-valued data judgment unit

Continued front page    (72) Inventor Koji Yoshida             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshiaki Seguchi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Kumiko Matsuo             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Etsuko Sato             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Satoshi Matsumoto             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5K014 AA01 DA05 EA03 HA10                 5K022 EE04 EE14 EE21 EE31                 5K059 AA08 CC03 CC06 CC07 DD02                       DD05 DD12 DD25

Claims (39)

[Claims] 1. In a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, transmission codec means for converting into transmission digital voice data on the transmitter side, and packet synchronization word information added to a header to transmit the transmission packet. A packet generation means for generating and a means for transmitting a packet having the same content a plurality of times are provided, and the receiver side has a packet synchronization word detection means for detecting a packet synchronization word from the received data and a received packet of the same content. A plurality of receiving buffer means for individually storing data of a plurality of packets, a majority decision means for making a majority decision for bit data at the same position of a packet received a plurality of times and having the same content, and a reception packet selected by the majority decision means The receiving codec that converts the digital audio data of The majority decision means, when the packet synchronization word can be normally detected in all the same content received packets of a plurality of times, makes a majority decision of the outputs of the plurality of reception buffer means and outputs the received digital audio data. However, if the packet synchronization word cannot be normally detected in one received packet of the same content received packets of a plurality of times, one of the receive buffer means in which received packets other than the received packet are accumulated is selected. Output as received digital audio data as it is, and when the packet synchronization word can be normally detected in one received packet among the received packets having the same content multiple times, the output of the receiving buffer means in which the received packet is accumulated is output. Select it and output it as received digital audio data as it is. Tsu bets if not normally detected synchronization word, a wireless device and outputs the data of all packets majority decision to the reception digital sound data. 2. A plurality of times is set to three times, the transmitter side has means for transmitting the same content packet three times, and the receiver side has three means.
2. The reception packet data of the same content is individually stored in each reception buffer means, and the majority decision means makes a majority decision on the bit data of the same position of the packets of the same content received three times. Wireless device. 3. The wireless device according to claim 1, wherein when a packet synchronization word cannot be normally detected in all of the same content received packets of a plurality of times, the part of the voice related to the packet is muted. . 4. The transmitter side has means for transmitting packets of the same content three times, and the receiver side stores the data of the received packets of the same content individually in three reception buffer means,
Packet synchronization word detection and detection error notifying means for outputting a packet synchronization word error detection signal when the packet synchronization word detection means fails to detect a packet synchronization word at a predetermined position of a packet, and the reception wireless means. An average received power unit that averages the obtained instantaneous received power for each packet and outputs the average received power is provided.
The majority decision judging means outputs the three receiving buffer means when the packet synchronization word error detection signal is not input in the same received packet three times and the level difference between the instantaneous received power and the average received power is within a certain level. Is output as received digital audio data after a majority decision, and a packet synchronization word error detection signal is input with one received packet of the same received packets three times, or the level difference between the instantaneous received power and the average received power is above a certain level. In the case of, the output of the receiving buffer means in which the received packets with a smaller level difference between the instantaneous received power and the average received power are accumulated is selected and output as it is as the received digital voice data, and the same received packet is received three times. Input the packet sync word error detection signal with the two received packets of When the difference is equal to or more than a certain value, the output of the reception buffer means in which the reception packets other than the corresponding reception packets are accumulated is selected and output as it is as the reception digital audio data, and the three receptions of the same reception packet are received three times. Whether to input a packet synchronization word error detection signal in a packet, or if the level difference between the instantaneous received power and the average received power exceeds a certain level, mute or judge the majority of the outputs of all the receiving buffer means. , A majority decision for selecting the output of the receiving buffer means corresponding to a received packet having a smaller level difference between the average received power and the instantaneous received power and outputting it as received digital audio data, and a judging means by the received power. The wireless device according to claim 1. 5. A radio apparatus in which a radio frequency channel is changed for each transmitted / received packet, a header is included in a part of the packet, and an error detection code is added to the header, and a transmitter digital voice is transmitted to a transmitter side. It has a transmission codec means for converting to data, a packet generation means for adding a packet synchronization word information to a header to generate a transmission packet, and means for transmitting a packet having the same content three times, and the receiver side receives it. Packet synchronization word detecting means for detecting a packet synchronization word from the data, and header error detection code error notifying means for outputting a header error detection code error detection signal when an error detection code error in the header is detected,
Three receive buffer means for storing data for each received packet, a majority decision means for making a majority decision for bit data at the same position in a packet received three times and having the same contents, and a digital packet for the received packet selected by the majority decision means. A receiving codec means for converting voice data by an algorithm corresponding to the transmitting codec means, and the majority decision means inputs a packet synchronization word error detection signal or a header error detection code error detection signal with the same received packet of three times. If not, the outputs of the three reception buffer means are judged by majority and output as reception digital voice data, and a packet synchronization word error detection signal or a header error detection code error detection is performed by one reception packet of the same reception packet of three times. If a signal is input, the corresponding received packet Selected from the outputs of the two receiving buffer means in which the received packets are accumulated and output as received digital audio data as they are, and the packet synchronous word error detection signal or When the header error detection code error detection signal is input, the output of the reception buffer means in which the reception packets other than the corresponding two reception packets are accumulated is selected and output as it is as the reception digital audio data, and the same reception is performed three times. When the packet sync word error detection signal or the header error detection code error detection signal is input in the three received packets of the packet, mute is performed or 3
A radio apparatus comprising: a majority decision for making a majority decision on the output of one reception buffer means and outputting it as received digital audio data; and a decision means based on a header error detection code error. 6. A radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, and transmission codec means for converting into transmission digital voice data on a transmitter side and packet synchronization word information added to a header for transmission. Receiving wireless means having a packet generating means for generating a packet and a means for transmitting a packet having the same content three times, and converting on the receiver side a radio frequency channel which changes for each packet of the transmitter to a baseband. A packet synchronization word detecting means for detecting a packet synchronization word from the received data, and a header error detection code error notifying means for outputting a header error detection code error detection signal when an error detection code error in the header is detected, Average reception power for averaging the instantaneous reception power obtained from the reception wireless means for each packet and outputting the average reception power Comprising the stage, and three receive buffer means for storing data for each received packet, and determining means for determining one of the same content received 3 times packets,
When the determination means does not input the packet synchronization word error detection signal or the header error detection code error detection signal in the same received packet of three times and the level difference between the instantaneous received power and the average received power is within a certain level, 3 The majority of the outputs of the one reception buffer means are judged and outputted as the reception digital voice data, and the packet synchronization word error detection signal or the header error detection code error detection signal is inputted by one reception packet of the same reception packets of three times, or When the level difference between the instantaneous received power and the average received power exceeds a certain level, the output of the receiving buffer means in which the received packets with the smaller level difference between the instantaneous received power and the average received power are accumulated is selected and kept as it is. Output as received digital voice data, and use two received packets of the same received packet three times to obtain the packet synchronization Doera detection signal or the header error check code or enter an error detection signal, when the level difference between the instantaneous reception power and the average reception power becomes constant than the corresponding 2
The output of the reception buffer means in which the reception packets other than the three reception packets are accumulated is selected and output as it is as the reception digital voice data, and the packet synchronization word error detection signal or the header is generated by the three reception packets of the same reception packet of three times. Error detection code When an error detection signal is input, or when the level difference between the instantaneous received power and the average received power exceeds a certain level, mute is performed, or the majority decision of the outputs of the three reception buffer means is performed. A decision means based on a majority decision, a header error detection code error, and a received power for selecting an output of the receive buffer means corresponding to a received packet having a smaller level difference between the received power and the instantaneous received power and outputting it as received digital voice data is provided. The wireless device according to claim 4, wherein: 7. A wireless device in which a radio frequency channel is changed for each transmission / reception packet, and a packet generating means for generating a transmission packet by adding packet synchronization word information to a header on a transmitter side, and a plurality of same contents. Receiving means for inputting a received signal to the receiver side and converting from a radio frequency channel that changes for each packet to a baseband, and the receiving radio. A packet multi-valued synchronization word detection means for inputting a signal received by the means as a multi-valued signal and outputting a packet synchronization word detection signal, and a plurality of stored multi-valued data of a plurality of received packets having the same content. Multi-value receiving buffer means, combining means for adding and combining the outputs of a plurality of multi-value receiving buffer means, and multi-value threshold for the output of the combining means And a multi-valued data determination means for performing threshold determination based on the wireless device. 8. In a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, a transmission codec means for converting an audio signal into transmission digital audio data and a fixed length for the converted transmission digital audio data on the transmitter side. Performs division and speed conversion to convert each specific packet 3
One transmission buffer unit, a packet generation unit that adds packet information such as a packet synchronization word and a header to the output of each of the three transmission buffer units, and generates a transmission packet. And a reception wireless means for inputting a reception signal to the receiver side and converting from a radio frequency channel that changes for each packet to a base band, and a reception wireless means for receiving the reception signal. Packet multi-valued synchronization word detection means for inputting the generated signal in multi-valued state and outputting the packet synchronization word detection signal, and three multi-valued reception buffer means for storing the received packet data of the same content as multi-valued And a synthesizing means for adding and synthesizing the outputs of the three multilevel receiving buffer means, and an output of the synthesizing means by a multilevel threshold. A radio apparatus comprising: multi-valued data determination means for performing threshold determination; and reception codec means for converting the received digital voice data with an algorithm corresponding to the transmission codec means. 9. A packet multi-level sync word detection and detection error notifying means for outputting a packet sync word error detection signal when detection of a packet sync word at a predetermined position of a packet is unsuccessful. When the packet synchronization word error detection signal is not input in the received packet, the outputs of the three multi-valued reception buffer means are selected, and the packet synchronization word error detection signal is input in one reception packet of the same three reception packets. In this case, one is selected from the outputs of the two multi-level reception buffer means in which the reception packets other than the reception packet in which the packet synchronization word error has occurred are accumulated, and the packet synchronization word is obtained by the two reception packets of the same reception packet three times. When an error detection signal is input, the two receive packets that caused the packet sync word error When the output of the multi-valued reception buffer means in which the reception packets other than is stored is selected and the packet synchronization word error detection signal is input with three reception packets of the same reception packet of three times, the synthesizing means has three multi-valued packets. The outputs of the reception buffer means are added and combined, and the threshold judgment is performed by changing the threshold value to an appropriate multivalue threshold corresponding to the number of the multivalued reception buffer means output by the combining means, or 3 of the same reception packets of 3 times. 9. The wireless device according to claim 8, further comprising variable threshold multi-valued data determination means for performing muting only when a packet synchronization word error detection signal is input in one received packet and otherwise performing the threshold determination. . 10. An average received power means for outputting the instantaneous received power from the reception wireless means, averaging the instantaneous received power for each packet and outputting the average received power, and adding a packet synchronization word with the same received packet three times. When the error detection signal is not input and the level difference between the instantaneous reception power and the average reception power is within a certain level, the outputs of the three multi-level reception buffer means are combined to form one reception packet of three identical reception packets. If a packet synchronization word error detection signal is input at or if the level difference between the instantaneous received power and the average received power exceeds a certain level, two multi-level receive buffers that store received packets other than the corresponding received packets The outputs of the means are combined and the packet synchronization word error detection signal is input with two received packets of the same received packet three times, or the instantaneous received power and the average received power are received. When the level difference from the electric power exceeds a certain level, the output of the multilevel reception buffer means in which the reception packets other than the corresponding two reception packets are accumulated is selected, and three reception packets of the same reception packet of three times are selected. When the packet synchronization word error detection signal is input at, or when the level difference between the instantaneous reception power and the average reception power exceeds a certain level, the input selection combining means for combining and outputting the outputs of the three multilevel reception buffer means Corresponding to the number of multi-valued reception buffer means selected by the input selection / combination means, the threshold value is determined by changing to an appropriate multi-valued threshold, or packet synchronization is performed by three reception packets of the same reception packet three times. Input the word error detection signal or mute only when the level difference between the instantaneous received power and the average received power exceeds a certain level,
10. The radio apparatus according to claim 9, further comprising: variable threshold multi-valued data determination means for performing the threshold determination in other cases. 11. A received packet control and header error detection code error notifying means for outputting a header error detection code error detection signal when a header error detection code error is detected, and a packet synchronization word error in the same received packet three times. When the detection signal or the header error detection code error detection signal is not input, the outputs of the three multi-level reception buffer means are combined, and the packet synchronization word error detection signal or one reception packet of the same reception packets of three times or When the header error detection code error detection signal is input, the outputs of the two multi-level reception buffer means in which the reception packets other than the corresponding reception packets are accumulated are combined, and the two reception packets of the same reception packet of three times are combined. Input the packet sync word error detection signal or header error detection code error detection signal. In this case, the output of the multilevel reception buffer means in which the received packets other than the corresponding two received packets are accumulated is selected, and the packet synchronization word error detection signal or the header error detection is performed by the three received packets of the same received packet of three times. When a code error detection signal is input, the outputs of the three multi-valued reception buffer means are combined, and the variable threshold multi-valued data determination means corresponds to the number of multi-valued reception buffer means selected by the input selection combining means. Then, change the threshold value to an appropriate multi-level threshold and judge the threshold value, or use 3 of the same received packets three times.
10. The radio according to claim 9, wherein muting is performed only when a packet synchronization word error detection signal or a header error detection code error detection signal is input in one received packet, and the threshold determination is performed in other cases. apparatus. 12. An average received power means and a received packet control and header error detection code error notification means are provided, and a packet synchronization word error detection signal or a header error detection code error detection signal is input with the same received packet three times. , And the level difference between the instantaneous received power and the average received power is within a certain level, the outputs of the three multi-level receiving buffer means are combined, and the packet synchronization word error is detected by one receiving packet of the same three receiving packets. When a signal or header error detection code error detection signal is input, or when the level difference between the instantaneous received power and the average received power exceeds a certain level, two multi-valued packets in which received packets other than the corresponding received packets are accumulated The outputs of the reception buffer means are combined, and a packet synchronization word error detection signal is generated by two reception packets of the same reception packet of three times. Or header error check code or enter an error detection signal, when the level difference between the instantaneous reception power and the average reception power becomes constant than the corresponding 2
The output of the multi-level receiving buffer means in which the received packets other than the one received packet are accumulated is selected, and the packet synchronization word error detection signal or the header error detection code error detection signal is generated by the three received packets of the same received packet of three times. When inputting or when the level difference between the instantaneous reception power and the average reception power becomes equal to or more than a certain level, the input selection synthesizing means for synthesizing the outputs of the three multi-level reception buffer means and the multi-value selection synthesis means selected Corresponding to the number of value receiving buffer means, the threshold is determined by changing to an appropriate multi-valued threshold, or a packet synchronization word error detection signal or a header error detection code error detection is performed with three received packets of the same received packet three times. Only when a signal is input or the level difference between the instantaneous received power and the average received power exceeds a certain level. Performs the door, claim otherwise characterized by comprising a variable threshold multilevel data determining means for performing the threshold determination 9
The described wireless device. 13. In a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, transmission codec means for converting to transmission digital voice data on the transmitter side, and conversion of the transmission digital voice data to a specific packet for each fixed length. Two transmission buffer means for performing division and speed conversion for performing transmission, and packet generation means for generating transmission packets by adding packet synchronization word information to the outputs of the two transmission buffer means, respectively. Receiving wireless means having means for transmitting a packet, converting on the receiver side a radio frequency channel that changes for each packet of the transmitter to a baseband, and a packet for detecting packet synchronization word information from the received data Based on the synchronization word detection means and the packet synchronization word detection signal, the packet is divided for each received packet and each reception packet is divided. Packet dividing means for removing a packet synchronization word, header, etc. from data, two receiving buffer means for storing data for each received packet, converting the speed, and outputting, selecting means, and the receiving packet selected by the selecting means And a receiving codec means for converting the digital voice data of 1) by an algorithm corresponding to the transmitting codec means, and the selecting means does not input a packet synchronization word error detection signal in two identical content reception packets. When the output of one receiving buffer means is directly output as the receiving digital voice data from one receiving buffer means, and the packet synchronizing word error detection signal is input by one receiving packet of the same content receiving packet of two times, the packet synchronizing word error is received. Received packets other than those that caused When the output of the reception buffer means is selected and output as it is as the reception digital audio data, and the packet synchronization word error detection signal is input in all the reception packets of the same content twice, one reception from the two reception buffer means A radio apparatus, characterized in that the output of the buffer means is selected and directly output as received digital audio data. 14. The average reception power means for outputting the instantaneous reception power from the reception radio means, averaging the instantaneous reception power for each packet, and outputting the average reception power, wherein the selecting means performs the same reception twice. If the packet sync word error detection signal is not input for packets and the level difference between the instantaneous received power and the average received power is within a certain level, received packets with a smaller level difference between the instantaneous received power and the average received power are accumulated. Selected receive buffer and output as received digital voice data, and input packet sync word error detection signal with one received packet of two identical received packets, or level difference between instantaneous received power and average received power. Is above a certain level, select the output of the receiving buffer means in which received packets other than the corresponding received packets are accumulated and leave it as is. When the packet sync word error detection signal is input with two received packets of the same received packet twice, or when the level difference between the instantaneous received power and the average received power exceeds a certain level. , And selecting means for performing mute or selecting a reception buffer in which reception packets having a smaller level difference between the instantaneous reception power and the average reception power are accumulated and outputting as reception digital audio data. The wireless device according to claim 13. 15. A reception packet control for outputting a header error detection code error detection signal when a header error detection code error is detected, and header error detection code error notification means, wherein the selection means performs the same reception twice. When the packet sync word error detection signal or the header error detection code error detection signal is not input in the packet, one of the two reception buffer means is selected and output as the reception digital voice data, and 1 of the same reception packets of two times is selected. When the packet sync word error detection signal or header error detection code error detection signal is input in one received packet, the output of the receive buffer means in which received packets other than the corresponding received packets are accumulated is selected as received digital audio data. Output and packet with two received packets of two same received packets. If you enter the door sync word error detection signal or the header error check code error detection signal, whether to mute, 2
14. The wireless apparatus according to claim 13, further comprising: a selection unit that selects one of the reception buffer units and outputs the reception digital audio data as reception digital audio data. 16. An average reception power means for outputting the instantaneous reception power from the reception wireless means, averaging the instantaneous reception power for each packet, and outputting the average reception power, receiving packet control and header error detection code error. Instantaneous reception when the notification means and the packet synchronization word error detection signal or the header error detection code error detection signal are not input with the same received packet of two times and the level difference between the instantaneous reception power and the average reception power is within a certain level. A packet buffer word error detection signal is selected by selecting a reception buffer in which reception packets with a smaller level difference between power and average reception power are accumulated and outputting as reception digital audio data, and using one reception packet of two identical reception packets. Or input the header error detection code error detection signal or the level difference between the instantaneous received power and the average received power is constant. In the case of the above, the output of the reception buffer means in which the reception packets other than the corresponding reception packets are accumulated is selected and output as the reception digital voice data, and the packet synchronization is performed by the two reception packets of the same reception packet of two times. If a word error detection signal or header error detection code error detection signal is input, or if the level difference between the instantaneous received power and the average received power exceeds a certain level, mute the signal or compare the instantaneous received power with the average received power. 14. The radio apparatus according to claim 13, further comprising: a selection unit that selects a reception buffer in which reception packets having a smaller level difference are accumulated and outputs the reception buffer as reception digital audio data. 17. In a radio apparatus in which a radio frequency channel is changed for each transmission / reception packet, transmission codec means for converting to transmission digital voice data on the transmitter side, and conversion of the transmission digital voice data to a specific packet for each fixed length. Two transmission buffer means for performing division and speed conversion for performing transmission, and packet generation means for generating transmission packets by adding packet synchronization word information to the outputs of the two transmission buffer means, respectively. A means for transmitting a packet, the receiving side, on the receiver side, a receiving radio means for converting from a radio frequency channel that changes for each packet of the transmitter to a baseband, and detecting packet synchronization word information from the received data, A packet that outputs a packet sync word error detection signal if detection of the packet sync word fails. A multi-level sync word detection and detection error notifying means, a packet splitting means for splitting each received packet based on the packet sync word detection signal, and removing packet sync words, headers, etc. from each received data, and for each received packet Two multi-value receiving buffer means for storing data, an input selecting / combining means for selecting or adding and combining outputs of the two multi-value receiving buffer means, and an output of the input selection / combining means for threshold judgment by the multi-value threshold. Variable threshold multi-valued data determining means for performing and received codec means for converting the received digital audio data by an algorithm corresponding to the transmitting codec means, and the input selection synthesizing means packetize the same received packet twice. If the sync word error detection signal is not input, two multi-level reception If the packet synchronization word error detection signal is input by one reception packet of two identical reception packets by combining the outputs of the delay means, reception packets other than the reception packet in which the packet synchronization word error has occurred are accumulated. When the output of the value reception buffer means is selected and the packet synchronization word error detection signal is input by two reception packets of the same reception packet of two times, the outputs of the two multi-value reception buffer means are combined to generate the variable threshold multi-value. The value data judgment means corresponds to the number of multi-valued reception buffer means selected by the input selection / combination means, and performs threshold judgment by changing to an appropriate multi-valued threshold, or two receptions of the same reception packet. Muting is performed only when the packet synchronization word error detection signal is input in the packet. In other cases, A radio apparatus, comprising: a variable threshold multi-valued data determination means for performing the threshold determination. 18. An average received power means for outputting the instantaneous received power from the reception wireless means, averaging the instantaneous received power for each packet, and outputting the average received power, wherein the input selecting / combining means performs the same two times. If the packet synchronization word error detection signal is not input in the received packet and the level difference between the instantaneous received power and the average received power is within a certain level, the received packets with the smaller level difference between the instantaneous received power and the average received power are accumulated. If the packet synchronization word error detection signal is input in one received packet of the same received packet of two times or the level difference between the instantaneous received power and the average received power exceeds a certain level, Select the output of the receiving buffer means in which received packets other than the corresponding received packets are accumulated, and select the two received packets of the same received packet twice. If a packet sync word error detection signal is input or the level difference between the instantaneous received power and the average received power exceeds a certain level, received packets with a smaller level difference between the instantaneous received power and the average received power are accumulated. Select the receive buffer,
The variable threshold multi-valued data determination means corresponds to the number of multi-valued reception buffer means selected by the input selection / synthesis means, and performs threshold determination by changing to an appropriate multi-valued threshold, or two identical reception packets. Of 2
A packet synchronization word error detection signal is input in one received packet, or muting is performed only when the level difference between the instantaneous received power and the average received power exceeds a certain level, and the threshold determination is performed in other cases. The wireless device according to claim 17. 19. A reception packet control for outputting a header error detection code error detection signal when a header error detection code error is detected and a header error detection code error notifying means, wherein the input selection synthesizing means performs two times. When the packet synchronization word error detection signal or the header error detection code error detection signal is not input in the same reception packet, the outputs of the two multi-level reception buffer means are combined and one reception packet of the two same reception packets is combined. When the packet synchronization word error detection signal or the header error detection code error detection signal is input, the output of the multi-level reception buffer means in which reception packets other than the corresponding reception packet are accumulated is selected, and the same reception packet of two times is received. Packet synchronization word error detection signal or header error detection code error When the detection signal is input, the outputs of the two multi-value receiving buffer means are combined, and the threshold is determined by changing to an appropriate multi-value threshold corresponding to the number of multi-value receiving buffer means selected by the input selection combining means. Or variable threshold multi-valued data determination means for muting only when a packet synchronization word error detection signal is input in two received packets of the same received packet twice, and for performing the threshold determination in other cases. 18. The high quality wireless device according to claim 17, wherein: 20. In a wireless device in which a radio frequency channel is changed for each transmitted / received packet, a transmitter transmits a microphone for inputting voice and an output from the microphone into transmission digital voice data by an appropriate algorithm. Codec means, two transmission buffer means for performing division and speed conversion for converting the converted transmission digital audio data into specific packets for each fixed length, and transmission buffer control means for controlling the two transmission buffer means. , The above 2
Packet generation means for adding a packet synchronization word and packet information such as a header to the output of one transmission buffer means to generate a transmission packet, transmission packet control means for controlling the packet generation means, and output of the packet generation means And a transmitting antenna unit for transmitting the output of the modulating unit by changing the radio frequency channel for each packet, and a transmitting antenna unit for outputting the output from the transmitting wireless unit as a radio wave signal. ,
The receiver includes a receiving antenna means, a receiving radio means for converting a radio frequency channel that changes for each packet of the transmitter into a baseband, a demodulating means for demodulating an output of the receiving radio means, and an output of the demodulating means. Data determining means, a packet synchronizing word detecting means for detecting a packet synchronizing word from the output of the data determining means and outputting a packet synchronizing word detecting signal, and the data based on the packet synchronizing word detecting signal. Received packet control means for performing control for dividing received data output from the determination means, received packet control and header error detection code for outputting a header error detection code error detection signal when an error detection code error in the header is detected The instantaneous reception power is output from the error notification means and the reception wireless means, and the instantaneous reception power is flattened for each packet. Average received power means for equalizing and outputting average received power; packet dividing means for removing a packet synchronization word, a header, etc. from the received data output from the data determination means for each received packet under the control of the received packet control means, Two receiving buffer means for speed-converting and outputting the output of the packet dividing means, receiving buffer control means for controlling the two receiving buffer means, input selecting / combining means, variable threshold multivalued data judging means,
A reception codec means for converting the digital voice data of the reception packet selected by the variable threshold multi-valued data determination means by an algorithm corresponding to the transmission codec means, and the input selection / synthesis means performs packet synchronization with the same reception packet. Do not input word error detection signal or header error detection code error detection signal,
If the level difference between the instantaneous reception power and the average reception power is within a certain level, the outputs of the two multi-level reception buffer means are combined and one reception packet of two identical reception packets is used to detect a packet synchronization word error detection signal or When the header error detection code error detection signal is input or when the level difference between the instantaneous reception power and the average reception power becomes a certain level or more, reception packets other than the corresponding reception packets are accumulated in the multilevel reception buffer means. Combine the outputs and input the packet sync word error detection signal or header error detection code error detection signal with two received packets of the same received packet twice, or make sure that the level difference between the instantaneous received power and the average received power is above a certain level. In the case of the above, the outputs of the two multilevel reception buffer means are combined, and the variable threshold multilevel data determination means is Depending on the number of multi-value receiving buffer means selected by the selecting / combining means, the threshold is judged by changing to an appropriate multi-value threshold, or a packet synchronization word error detection signal is obtained by two received packets of the same received packet twice. Alternatively, a header error detection code error detection signal is input, or muting is performed only when the level difference between the instantaneous reception power and the average reception power is equal to or more than a certain level, and in other cases, the threshold determination is performed. Wireless device. 21. The radio apparatus according to claim 1, wherein the use speed of a transmission / reception codec is reduced to enable effective use of empty packets and low power consumption. 22. A low-rate transmission codec means in which the transmission codec means has a low rate, and a low-rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 2. The wireless apparatus according to claim 1, further comprising: a reception buffer control unit that controls the reception buffer unit; and a majority decision unit that makes a majority decision at the speed of the low-rate reception codec unit. 23. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 2. The radio apparatus according to claim 1, further comprising: reception buffer control means for controlling the reception buffer means; and input selection majority decision means for making a majority decision at the speed of the low-rate reception codec means. 24. A low-rate transmission codec means in which the transmission codec means has a low rate, and a low-rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 5. The radio apparatus according to claim 4, further comprising: a reception buffer control unit that controls the reception buffer unit; and a determination unit that determines a majority by the speed of the low-rate reception codec unit and a determination based on received power. 25. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 6. The radio according to claim 5, further comprising: a reception buffer control means for controlling the reception buffer means; and a decision means based on a majority decision and a header error detection code error for making a majority decision at the speed of the low rate reception codec means. apparatus. 26. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 7. A reception buffer control means for controlling the reception buffer means, and a majority decision for making a majority decision at the speed of the low-rate reception codec means, a header error detection code error, and a decision means based on received power. The described wireless device. 27. A low rate transmission codec means in which the transmission codec means is reduced in rate, and a low rate reception codec means in which the reception codec means is reduced in rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means A receiving buffer control means for controlling the receiving buffer means, a synthesizing means for synthesizing at a speed of the low rate receiving codec means, and a multivalued data determining means for making a multivalued data determination at the speed of the low rate receiving codec means. The wireless device according to claim 8, further comprising: 28. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate,
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 10. The wireless device according to claim 9, further comprising threshold multi-valued data determination means. 29. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 11. The wireless device according to claim 10, further comprising threshold multi-valued data determination means. 30. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means The wireless device according to claim 11, further comprising threshold multi-valued data determination means. 31. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate,
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 13. The wireless device according to claim 12, further comprising threshold multi-valued data determination means. 32. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 14. The radio apparatus according to claim 13, further comprising: reception buffer control means for controlling the reception buffer means, and selection means for selecting at a speed of the low rate reception codec means. 33. A low rate transmission codec means in which the transmission codec means is reduced in rate, and a low rate reception codec means in which the reception codec means is reduced in rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 15. The radio apparatus according to claim 14, further comprising: reception buffer control means for controlling the reception buffer means and selection means for selecting at a speed of the low rate reception codec means. 34. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means The radio apparatus according to claim 15, further comprising: a reception buffer control means for controlling the reception buffer means, and a selection means for selecting at a speed of the low rate reception codec means. 35. A low rate transmission codec means in which the transmission codec means is reduced in rate, and a low rate reception codec means in which the reception codec means is reduced in rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means 17. The radio apparatus according to claim 16, further comprising: reception buffer control means for controlling the reception buffer means and selection means for selecting at a speed of the low rate reception codec means. 36. A low-rate transmission codec means in which the transmission codec means has a low rate, and a low-rate reception codec means in which the reception codec means has a low rate,
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 18. The wireless device according to claim 17, further comprising: threshold multi-valued data determination means. 37. A low rate transmission codec means in which the transmission codec means has a low rate, and a low rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 19. The wireless device according to claim 18, further comprising threshold multi-valued data determination means. 38. A low rate transmission codec means in which the transmission codec means is reduced in rate, and a low rate reception codec means in which the reception codec means is reduced in rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed; and for speed conversion of the packet speed to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 20. The wireless device according to claim 19, further comprising: threshold multi-valued data determination means. 39. A low-rate transmission codec means in which the transmission codec means has a low rate, and a low-rate reception codec means in which the reception codec means has a low rate.
Transmission buffer control means for controlling the transmission buffer means so as to perform speed conversion from the speed of the low rate transmission codec means to packet speed, and the speed conversion means for speed conversion from the speed of the packet to the speed of the low rate reception codec means Reception buffer control means for controlling the reception buffer means, input selection combining means for combining or selecting at the speed of the low rate reception codec means, and variable for performing variable threshold multi-valued data determination at the speed of the low rate reception codec means 21. The wireless device according to claim 20, further comprising: threshold multi-valued data determination means.