CN1812392A - Transmitting device and transmitting method - Google Patents
Transmitting device and transmitting method Download PDFInfo
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- CN1812392A CN1812392A CN 200610005875 CN200610005875A CN1812392A CN 1812392 A CN1812392 A CN 1812392A CN 200610005875 CN200610005875 CN 200610005875 CN 200610005875 A CN200610005875 A CN 200610005875A CN 1812392 A CN1812392 A CN 1812392A
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Abstract
In a modulation method in which a sender device expresses a symbol such as an 8PSK or a 16PSK by using three or more bits, important information is arranged at least at only one of the first and second bits, a receiver device extracts the important information from at least one of the first and second bits of the received signal, and thereby communication control is carried out based on the important information.
Description
The application be that November 8, application number in 1999 are 99801989.5 the applying date, denomination of invention divides an application for the application for a patent for invention of " transceiver and sending and receiving methods ".
Technical field
The present invention relates to dispensing device and sending method, wherein relate to the transceiver that OFDM (OrthogonalFrequency Division Multiplexing) mode uses (hereinafter referred to as " the OFDM transceiver).
Background technology
Below, with reference to Fig. 1 existing OFDM transceiver is described.Fig. 1 is the block diagram of existing OFDM transceiver.
With reference to Fig. 1, parallel/serial converters (hereinafter referred to as " P/S converter ") 101 is inserted important information in sending data.This important information is meant when communication counterpart receives under the error rate characteristic condition of severe, may be difficult to keep the information of normal communication.That is, above-mentioned important information is the information that requires better error rate characteristic than other information (for example sending data).
The example of above-mentioned important information can be enumerated retransmission of information and control information etc.Retransmission of information is meant the information of retransmitting according to from the repeating transmission of communication counterpart indication, to this communication counterpart.And control information is meant that communication counterpart is used for receiving reliably the information of proper signal.Control information can be enumerated the information of the burst (バ one ス ト) that the expression communication counterpart will receive in the communication frame, the information of the current modulation mode when representing Adaptive Modulation etc.
Serial converter (hereinafter referred to as " S/P converter ") 102 is the signal of a plurality of (being 4 here) sequence with the transmission signal transformation of P/S converter 101 outputs.
Mapping (マ Star ピ Application ダ) 103 pairs of signals from S/P converter 102 of circuit carry out elementary modulation, and the signal of elementary modulation is delivered to contrary Fourier transformation (Inverse Fast Fourier Transform; Hereinafter referred to as " IFFT ") circuit 104.Signal after 104 pairs of elementary modulation of IFFT circuit carries out contrary Fourier transformation to be handled.D/A converter 105 is an analog signal with the transmission signal transformation of IFFT circuit 104 outputs.
On the other hand, A/D converter 106 is transformed to digital signal with received signal, delivers to Fourier transformation (Fast Fourier Transfrom; Hereinafter referred to as " FFT ") circuit 107.The output signal of 107 pairs of A/D converters 106 of fft circuit is carried out Fourier transformation and is handled.
Postpone 108 pairs of each subcarriers that takes out by Fourier transformation of wave detector and postpone the detection processing, determinant 109 postpones the judgement that detection is handled.P/S converter 110 will be a sequence from the signal transformation of a plurality of sequences of each determinant 109, and S/P converter 111 extracts important information from the output of P/S converter 110.
Operation when then, the transmission that the existing apparatus with said structure is described receives.
Send data after having inserted important information, be transformed to the signal of a plurality of sequences by S/P converter 102 by P/S converter 101.Signal from a plurality of sequences of S/P converter 102 carries out elementary modulation by mapping circuit 103.The signal of elementary modulation carries out contrary Fourier transformation by IFFT circuit 104 to be handled.The signal that contrary Fourier transformation was handled is transformed to digital signal by D/A converter 105 and sends.
Received signal is carried out Fourier transformation by fft circuit 107 and is handled after being transformed to analog signal by A/D converter 106.Handle by Fourier transformation, the signal by each subcarrier transmission postpones detection and handles by postponing wave detector 108.The signal that the delay detection was handled is judged by determinant 109, delivers to P/S converter 110.Be transformed to the signal of a sequence from the signal of a plurality of sequences of determinant 109 by P/S converter 110, deliver to S/P converter 111.In S/P converter 111, from the signal of a sequence, extract retransmission of information and receive data.
Like this, the transmitting terminal device is inserted into important information and sends in the signal, receiving end device extracts important information from received signal, thereby receiving end device is by carrying out the reception processing based on the important information that extracts, the suitably signal of receiving end/sending end device transmission.Thus, the communication that between transmitting terminal device and receiving end device, is well on.
With the example of retransmission of information as important information, the transmitting terminal device is inserted into retransmission of information and sends in the signal, and receiving end device extracts retransmission of information from received signal, thereby receiving end device can carry out suitable repeating transmission indication to the transmitting terminal device.That is, receiving end device can carry the wrong information of which cell (セ Le) of which burst and beam back on control channel.
Yet, in existing apparatus, following problems is arranged.That is, in existing apparatus, if owing to improve efficiency of transmission then degradation of circuit quality, so improve efficiency of transmission more, then correctly the possibility of the signal (for example important information and transmission data) that sends of receiving end/sending end device is high more for receiving end device.That is, improve efficiency of transmission more, then in receiving end device, the error rate characteristic of important information worsens more.Consequently, receiving end device is difficult to carry out suitable reception, so as a whole, between receiving end device and receiving end device, is difficult to keep normal communication.
Here, for example consider modulation system to be become from QPSK the situation of 8PSK in order to improve efficiency of transmission.
In 8PSK, 1 code element (シ Application ボ Le) is represented by 3 bits.As shown in Figure 2, the 1st bit per 180 degree on the I-Q plane switch " 0 " and " 1 ", and the 2nd bit per 180 degree on the I-Q plane switch " 0 " and " 1 ", and per 90 degree of the 3rd bit switch " 0 " and " 1 ".That is, when increasing bit, phase margin is half of phase margin of last bit.Therefore, the phase margin of the 3rd bit is half of phase margin of QPSK, occurs in the 3rd bit so mistake is concentrated.
Here, retransmission of information is being used as under the situation of important information, when the error rate characteristic of retransmission of information worsened as mentioned above in receiving end device, the transmitting terminal device was retransmitted the increased frequency of this retransmission of information, increased so finish the time of communication.Usually, the repeating transmission number of times of certain information is limited, retransmits under the uncompleted situation in this number of times, can not carry out the error correction of this information.Therefore, under the situation of Image Communication of carrying out the very good mistake characteristic of requirement etc., can not keep normal communication.
In addition, as under the situation of important information, when the error rate characteristic of this information worsened in receiving terminal, receiving terminal was difficult to discern the used modulation system of transmitting terminal in the information that will represent current modulation mode, so the signal that can not receiving end/sending end sends.Therefore, between transmitting terminal and receiving terminal, can not keep normal communication.
Summary of the invention
Given this present invention puts to propose, and its purpose is to provide a kind of transceiver, improves efficiency of transmission in the transmission quality that keeps important information.
This purpose is following realization: the bit more than usefulness such as 8PSK or 16PSK 3 bits represents in the modulation system of 1 code element, will be as at least 1 that only is configured in by the information of selecting in all information of communication object in the 1st bit and the 2nd bit.
In one aspect of the invention, a kind of dispensing device is provided, comprise: converting member, comprise the first information sequence of a plurality of bits and comprise second information sequence of a plurality of bits to its input by path separately, and its generation comprises the bit sequence of at least one bit of at least one bit of first information sequence and second information sequence; And modulating part, be used to modulate described bit sequence the transmission signal is provided, it makes in such a way: on the orthogonal coordinate system of being made up of in-phase component and quadrature component, represent each code element with 3 bits or the bit more than it, wherein, the bit of corresponding first information sequence disposes on first bit of each described code element at least, and the bit of corresponding second information sequence disposes on second bit of at least one code element, and the bit of corresponding second information sequence disposes on than the lower bit of second bit of each code element.
In another aspect of the present invention, a kind of base station apparatus that comprises aforesaid dispensing device also is provided, wherein, this base station apparatus sends signal via antenna transmission.
In another aspect of the present invention, a kind of communication terminal that comprises aforesaid dispensing device also is provided, wherein, this communication terminal sends signal via antenna transmission.
In another aspect of the present invention, a kind of sending method also is provided, may further comprise the steps: comprise the first information sequence of a plurality of bits and comprise second information sequence of a plurality of bits by the input of path separately; Generation comprises the bit sequence of at least one bit of at least one bit of first information sequence and second information sequence, and wherein first information sequence is more important than second information sequence; And modulate described bit sequence the transmission signal is provided, it makes in such a way: on the orthogonal coordinate system of being made up of in-phase component and quadrature component, represent each code element with 3 bits or the bit more than it, wherein, the bit of corresponding first information sequence disposes on first bit of each described code element at least, and the bit of corresponding second information sequence disposes on second bit of at least one code element, and the bit of corresponding second information sequence disposes on than the lower bit of second bit of each code element.
Description of drawings
Fig. 1 is the block diagram of existing OFDM transceiver;
Fig. 2 is the schematic diagram on I-Q plane under the situation that employing 8PSK modulates in existing OFDM transceiver;
Fig. 3 is the block diagram of the transceiver of one embodiment of the invention;
Fig. 4 is the schematic diagram of the configuration of important information in the existing transceiver;
Fig. 5 is the schematic diagram of the configuration of important information in the transceiver of one embodiment of the invention.
Embodiment
(embodiment)
Below, describe one embodiment of the invention in detail with reference to accompanying drawing.
The transceiver of present embodiment adopts 8PSK, carrier wave to adopt in the radio communication of OFDM mode of 4 carrier waves in modulation system, important information only is configured at least one of the 1st bit and the 2nd bit.
Below, the transceiver of present embodiment is described with reference to Fig. 3 to Fig. 5.Fig. 3 is the block diagram of the transceiver of one embodiment of the invention, Fig. 4 is the schematic diagram of the configuration of important information in 8PSK modulation, in the existing transceiver, and Fig. 5 is the schematic diagram of the configuration of important information in the transceiver of one embodiment of the invention.
With reference to Fig. 3, important information is transformed to the signal of a plurality of (being 4) sequence here by S/P converter 301.Send data are transformed to a plurality of (being 4) sequence here by S/P converter 302 signal.
Here, important information is meant the information that importance degree is high, that is, and and when communication counterpart receives under the error rate characteristic condition of severe, may be difficult to keep the information of normal communication.The example of above-mentioned important information can be enumerated retransmission of information and control information.The information of the current modulation mode when control information can be enumerated in the communication frame information, the expression Adaptive Modulation of the burst that the expression communication counterpart will receive, communication counterpart difference from the used information of the signal of present embodiment transceiver and other interference signals, and represent the information etc. of which burst in each communication counterpart received frame.
Here, the S/P converter 301 used of important information only is configured in important information at least one of the 1st bit and the 2nd bit.Here, for example, only be configured on the 1st bit.About this configuration, the back will be described in detail.
Important information and transmission data are carried out contrary Fourier transformation by IFFT circuit 304 and are handled after carrying out elementary modulation by mapping circuit 303.The transmission data that contrary Fourier transformation was handled are transformed to analog signal by D/A converter 305.And then this transmission signal sends through antenna after the wireless transmission of stipulating is handled.
On the other hand, after the wireless receiving that the signal of antenna transmission is being stipulated is handled, be transformed to digital signal, deliver to fft circuit 307 by A/D converter 306.In fft circuit 307, the received signal that is transformed to digital signal is carried out Fourier transformation handle.Thus, take out the signal that passes through each subcarrier transmission.Signal by each subcarrier transmission postpones the detection processing by postponing wave detector 308.The signal that passes through each subcarrier transmission that the delay detection was handled is judged by determinant 309.Determinant 309 separates the 1st bit and other bits (i.e. the 2nd bit and the 3rd bit) and the output in the received signal.
The 1st bit of received signal is sent to P/S converter 310, is transformed to the signal of a sequence.Thus, obtain as the retransmission of information that receives data from P/S converter 310.In addition, the 2nd bit and the 3rd bit of received signal are sent to P/S converter 311, are transformed to the signal of a sequence.Thus, obtain receiving data from P/S converter 311.
The collocation method of important information is described with reference to Fig. 4 and Fig. 5 here.Fig. 4 illustrates in the certain hour as in the past, on time shaft situation about important information being configured on all bits, and Fig. 5 illustrates the only situation of configuration important information on the 1st bit.In the present embodiment, as shown in Figure 5, only send with state at the 1st bit configuration important information.
In 8PSK, with reference to Fig. 2,1 code element is represented by 3 bits.As shown in Figure 2, the 1st bit per 180 degree on the I-Q plane switch " 0 " and " 1 ", and the 2nd bit per 90 degree on the I-Q plane switch " 0 " and " 1 ", and per 45 degree of the 3rd bit switch " 0 " and " 1 ".That is, when increasing bit, phase margin is half of phase margin of last bit.
Therefore, in 8PSK, phase margin reduces according to the order of the 1st bit, the 2nd bit, the 3rd bit.In addition, the phase margin of the phase margin of the 2nd bit and QPSK is equal.Here.As shown in Figure 5, by only on the 1st bit, disposing important information, can send important information with high-quality state.
Here, referring again to Fig. 3 Benq in the Control on Communication of important information.Here, illustrate respectively with retransmission of information as the Control on Communication under the situation of important information, and with control information as the Control on Communication under the situation of important information.The situation of carrying out radio communication with the 1st communicator that comprises transceiver shown in Figure 3 and the 2nd communicator is that example describes.
At first, illustrate retransmission of information as the Control on Communication under the situation of important information.In the 1st communicator,, take out important information and receive data by carrying out above-mentioned processing to received signal.The important information and the reception data of taking out are carried out the error detection processing.
In important information or reception data, detect the data that have mistake by above-mentioned error detection processing and be sent to repeating transmission instruction unit (not shown).In retransmitting instruction unit, generate retransmission of information, be used for request repeat and detect the data that have mistake.That is, retransmit instruction unit and retransmit indication as Control on Communication.
The retransmission of information that is generated by this repeating transmission control part is imported into S/P portion 301 as important information.The transmission data that comprise this important information are carried out above-mentioned processing, become the transmission signal.This transmission signal is sent to the 2nd communicator.
On the other hand, in the 2nd communicator,, take out important information and receive data by carrying out above-mentioned processing to received signal.The important information and the reception data of taking out are carried out the error detection processing.In important information, comprise retransmission of information, represent the 1st communicator request repeat predetermined data.This important information is sent to retransmits instruction unit (not shown).The transmission data that comprise this important information are carried out above-mentioned processing, become the transmission signal.This transmission signal is sent to the 1st communicator.
And then, in the 1st communicator, same important information and the reception data of taking out from received signal.This important information and reception data are carried out the error detection processing equally.Here, important information is sent on the 1st bit by the 2nd communication device configuration, and institute thinks the error rate characteristic good signal.That is, mistake does not take place by the taking-up of the 1st communicator in the retransmission of information of being retransmitted as important information by the 2nd communicator.
As mentioned above, even the reception data in the 1st communicator exist under the situation of mistake, the 1st communicator sends to the 2nd communicator with the retransmission of information of the data of request repeat generation mistake as important information.The 2nd communicator can receive important information in zero defect ground, so can discern the re-send request may of the 1st communicator reliably.
And then the 2nd communicator sends to the 1st communicator with the data of the 1st communicator request repeat as important information, so the 1st communicator can receive this important information reliably.Therefore, the 1st communicator can suppress frequency that the request of data of asking once to retransmit is retransmitted once more.Consequently, between the 1st communicator and the 2nd communicator, can keep normal communication well.
Then, illustrate control information as the Control on Communication under the situation of important information.In the 1st communicator, various control informations are imported into S/P portion 301 as important information.Here, as various control informations, use information, the expression current modulation mode of the burst that expression the 2nd communicator will receive in communication frame information, and the 2nd communicator distinguish the used information of signal that the 1st communicator sends and other interference signals etc.Above-mentioned important information and transmission data are carried out above-mentioned processing, become the transmission signal.This transmission signal is sent to the 2nd communicator.
On the other hand, in the 2nd communicator,, from received signal, take out important information and receive data by carrying out above-mentioned processing.Important information is that various control informations are sent at the 1st bit by the 1st communication device configuration, so be the error rate characteristic good signal.The various control informations of taking out are sent to and receive control part (not shown).
Receive control part according to the various control informations of taking out, receive control as Control on Communication.For example, as various control informations, under the situation of the information of the burst that use expression the 2nd communicator will receive in communication frame, receive control part and transmit control signal to each one shown in Figure 3, indication is only carried out various processing to the burst shown in the above-mentioned information.In addition, as various control informations, under the situation of the information of using the expression current modulation mode, receive control part and transmit control signal to each delay detection section 308, indication is used and the corresponding demodulation mode of modulation system shown in the above-mentioned information.
As mentioned above, the 1st communicator is by sending to the 2nd communicator with various control informations as important information, make the 2nd communicator to receive these various control informations in zero defect ground, handle so can carry out correct reception according to the indication of the 1st communicator.Consequently, between the 1st communicator and the 2nd communicator, can keep normal communication well.
Here, be to send various control informations with regard to the 1st communicator to the 2nd communicator to describe, but can certainly be that the 2nd communicator sends various control informations as important information to the 1st communicator as the situation of important information.
Like this, by important information is configured on the 1st bit,, also can not influence the quality of important information on the 3rd bit even mistake takes place more.Consequently, according to present embodiment, even under situation about transmitting by 8PSK, the quality of important information also can remain on and the same state of situation that transmits by QPSK.Thus, between transmitting terminal device and receiving end device, can keep normal communication.
For example, in that retransmission of information is used as under the situation of important information,, can keep the error rate characteristic of retransmission of information in the receiving end device well by in the transmitting terminal device, retransmission of information being configured in the 1st bit.Thus, can reduce the number of times that the transmitting terminal device is retransmitted retransmission of information, so even when communications such as the Image Communication of carrying out the very good error rate characteristic of requirement, also can keep normal communication.
In addition, in the information that will represent current modulation mode as under the situation of important information, by in the transmitting terminal device with this information configuration at the 1st bit, can keep the error rate characteristic of this information in the receiving end device well.Thus, receiving end device uses the modulation system corresponding demodulation mode used with the transmitting terminal device, reliably the signal of receiving end/sending end device transmission.Consequently, even under the situation that adopts self-adaptive modulation method, also can keep normal communication.
In the present embodiment, be that the situation that just important information is configured in the 1st bit describes, but if beyond the 3rd many bit of mistake, even then important information is being configured under the situation of the 2nd bit, also the quality of important information can be remained at least the degree identical with situation about transmitting by QPSK.
In addition, in the present embodiment, be just the situation of important information as the information that disposes on the 1st bit or the 2nd bit to be described, but the invention is not restricted to this, also go for the information beyond the important information as the information that on above-mentioned bit, disposes.That is, also can from all information (as by all information of communication object) that will send, be chosen in the information that will dispose on the 1st bit or the 2nd bit according to the various conditions such as height of importance.
In addition, the present invention is not only applicable to all the time 1 information is used as the situation of the information that disposes on above-mentioned bit certainly, and goes for changing at any time according to various conditions the situation of the information of above-mentioned bit configuration.
In addition, in the present embodiment, be to describe with regard to the situation of using 8PSK, but equally also can apply the present invention to 3 bits with on represent modulation system, for example 16PSK, the 32PSK etc. of 1 code element.
Moreover present embodiment is to describe with regard to the situation in the communication of OFDM mode, but the present invention can use regardless of communication mode.
Transceiver of the present invention adopts following structure, comprising: modulating part, and use the above bit of 3 bits to represent the modulation of 1 code element; Arrangement components, will from as by the information configuration of selecting all information of communication object at least one of the 1st bit that sends signal and the 2nd bit.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can with the equal quality of situation of the QPSK modulation system of representing 1 code element with 2 bits, by the information of communication object (for example transmit from conduct, retransmission of information, important information or send data etc.) in the information selected, so can in the transmission speed that improves radio communication, keep the quality of the above-mentioned information of selecting.
Transceiver of the present invention adopts following structure, and wherein, above-mentioned information is from as by the information of selecting all information of communication object according to the height of importance.
According to the present invention, can be (for example with the information selected according to the height of importance, keeping information that normal when communication require good error rate etc.) information of error rate characteristic as will keep receiving well the time, even so, also can keep normal communication making under the situation of degradation of circuit quality owing to improving efficiency of transmission.
Transceiver of the present invention adopts following structure, comprise: extract parts, information extraction from least one of the 1st bit of received signal and the 2nd bit, this received signal is to modulate with the modulation system of carrying out following modulation, promptly represents the modulation of 1 code element with the above bit of 3 bits; Communication control unit communicates control according to the information that extracts.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can with the equal quality of situation of the QPSK modulation system of representing 1 code element with 2 bits, taking-up information from received signal, communicate control according to the information of taking out, so can keep normal communication.
Transceiver of the present invention adopts following structure, and wherein, above-mentioned information is from as by the information of selecting all information of communication object according to the height of importance.
According to the present invention, can be (for example according to the information of selecting according to the height of importance, keeping information that normal when communication require good error rate etc.) communicate control, even so, also can keep normal communication making under the situation of degradation of circuit quality owing to improving efficiency of transmission.
Transceiver of the present invention adopts following structure, and wherein, above-mentioned communication control unit comprises the repeating transmission indicating device, according to above-mentioned information communication counterpart is retransmitted indication.
According to the present invention, even making under the situation of degradation of circuit quality, also owing to the retransmission of information that disposes on the 1st bit that is used in received signal or the 2nd bit is retransmitted indication to communication counterpart, so can keep normal communication owing to improving efficiency of transmission.
Transceiver of the present invention adopts following structure, and wherein, above-mentioned communication control unit comprises the reception control assembly, according to above-mentioned information above-mentioned received signal is received control.
According to the present invention, even making under the situation of degradation of circuit quality, also owing to the information that disposes on the 1st bit that is used in received signal or the 2nd bit receives control, so can suitably receive received signal owing to improving efficiency of transmission.Thus, can keep normal communication.
Base station apparatus of the present invention comprises transceiver, and wherein, above-mentioned transceiver adopts following structure, comprising: modulating part, and use the above bit of 3 bits to represent the modulation of 1 code element; Arrangement components, will from as by the information configuration of selecting all information of communication object at least one of the 1st bit that sends signal and the 2nd bit.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can be to come transmission information with the equal quality of the situation of the QPSK modulation system of representing 1 code element with 2 bits, so can in the transmission speed that improves radio communication, keep the quality of retransmission of information.
Communication terminal of the present invention comprises transceiver, and wherein, above-mentioned transceiver adopts following structure, comprising: modulating part, and use the above bit of 3 bits to represent the modulation of 1 code element; Arrangement components, will from as by the information configuration of selecting all information of communication object at least one of the 1st bit that sends signal and the 2nd bit.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can be to come transmission information with the equal quality of the situation of the QPSK modulation system of representing 1 code element with 2 bits, so can in the transmission speed that improves radio communication, keep the quality of retransmission of information.
Base station apparatus of the present invention adopts following structure, comprise: extract parts, from at least one of the 1st bit of received signal and the 2nd bit, extract retransmission of information, this received signal is to modulate with the modulation system of carrying out following modulation, promptly represents the modulation of 1 code element with the above bit of 3 bits; Retransmit indicating device, with control channel the air station of transmitting terminal is retransmitted indication according to the retransmission of information that said extracted goes out.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can be to take out retransmission of information with the equal quality of the situation of the QPSK modulation system of representing 1 code element with 2 bits, so need not indicate repeating transmission repeatedly to radio communication receiving terminal, for example travelling carriage, can alleviate the communications burden of communication counterpart.
Communication terminal of the present invention adopts following structure, comprise: extract parts, from at least one of the 1st bit of received signal and the 2nd bit, extract retransmission of information, this received signal is to modulate with the modulation system of carrying out following modulation, promptly represents the modulation of 1 code element with the above bit of 3 bits; Retransmit indicating device, with control channel the air station of transmitting terminal is retransmitted indication according to the retransmission of information that said extracted goes out.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can be to take out retransmission of information with the equal quality of the situation of the QPSK modulation system of representing 1 code element with 2 bits, so need not indicate repeating transmission repeatedly to radio communication receiving terminal, for example base station, can alleviate the communications burden of communication counterpart.
Sending and receiving methods of the present invention adopts following method, comprising: modulation step, and use the above bit of 3 bits to represent the modulation of 1 code element; Configuration step, will from as by the information configuration of selecting all information of communication object at least one of the 1st bit that sends signal and the 2nd bit.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can with the equal quality of situation of the QPSK modulation system of representing 1 code element with 2 bits, by the information of communication object (for example transmit from conduct, retransmission of information, important information or send data etc.) in the information selected, so can in the transmission speed that improves radio communication, keep the quality of the above-mentioned information of selecting.
Sending and receiving methods of the present invention adopts following structure, comprise: extraction step, information extraction from least one of the 1st bit of received signal and the 2nd bit, this received signal is to modulate with the modulation system of carrying out following modulation, promptly represents the modulation of 1 code element with the above bit of 3 bits; The Control on Communication step communicates control according to the information that extracts.
According to the present invention, even 8PSK represents the modulation system of 1 code element like this with the above bit of 3 bits, also can with the equal quality of situation of the QPSK modulation system of representing 1 code element with 2 bits, taking-up information from received signal, communicate control according to the information of taking out, so can keep normal communication.
As mentioned above, the bit of transceiver of the present invention more than usefulness such as 8PSK or 16PSK 3 bits represented in the modulation system of 1 code element, will be from as only being configured in by the information of selecting all information of communication object at least one of the 1st bit and the 2nd bit, so can keep the transmission quality of important information, improve efficiency of transmission simultaneously.
This specification is willing to flat 11-220827 number based on the spy that the spy is willing to flat 10-316417 number and on August 4th, 1999 applied for of application on November 6th, 1998.Its content is contained in this.
Utilizability on the industry
The present invention is specially adapted to the field of the transceiver that the OFDM mode uses.
Claims (12)
1, a kind of dispensing device comprises:
Converting member, comprise the first information sequence of a plurality of bits and comprise second information sequence of a plurality of bits to its input by path separately, and its generation comprises the bit sequence of at least one bit of at least one bit of first information sequence and second information sequence; And
Modulating part, being used to modulate described bit sequence provides the transmission signal, and it makes in such a way: on the orthogonal coordinate system of forming by in-phase component and quadrature component, represent each code element with 3 bits or its above bit,
Wherein, the bit of corresponding first information sequence disposes on first bit of each described code element at least, and the bit of corresponding second information sequence disposes on second bit of at least one code element, and the bit of corresponding second information sequence disposes on than the lower bit of second bit of each code element.
2, dispensing device as claimed in claim 1, wherein, the bit of corresponding first information sequence disposes on second bit of at least one code element.
3, dispensing device as claimed in claim 1 or 2, wherein, described first information sequence is more important than second information sequence.
4, dispensing device as claimed in claim 1 or 2, wherein, described first information sequence is used for mistake control.
5, dispensing device as claimed in claim 1 or 2, wherein, described first information sequence is retransmission of information or control information.
6, a kind of base station apparatus that comprises dispensing device as claimed in claim 1 or 2, wherein, this base station apparatus sends signal via antenna transmission.
7, a kind of communication terminal that comprises dispensing device as claimed in claim 1 or 2, wherein, this communication terminal sends signal via antenna transmission.
8, a kind of sending method may further comprise the steps:
Comprise the first information sequence of a plurality of bits and comprise second information sequence of a plurality of bits by the input of path separately;
Generation comprises the bit sequence of at least one bit of at least one bit of first information sequence and second information sequence, and wherein first information sequence is more important than second information sequence; And
Modulate described bit sequence the transmission signal is provided, it makes in such a way: on the orthogonal coordinate system of forming by in-phase component and quadrature component, represent each code element with 3 bits or its above bit,
Wherein, the bit of corresponding first information sequence disposes on first bit of each described code element at least, and the bit of corresponding second information sequence disposes on second bit of at least one code element, and the bit of corresponding second information sequence disposes on than the lower bit of second bit of each code element.
9, sending method as claimed in claim 8, wherein, the bit of corresponding first information sequence disposes on second bit of at least one code element.
10, sending method as claimed in claim 8 or 9, wherein, described first information sequence is more important than second information sequence.
11, sending method as claimed in claim 8 or 9, wherein, described first information sequence is used for mistake control.
12, sending method as claimed in claim 8 or 9, wherein, described first information sequence is retransmission of information or control information.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP316417/98 | 1998-11-06 | ||
| JP31641798 | 1998-11-06 | ||
| JP220827/99 | 1999-08-04 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998019895A Division CN1248438C (en) | 1998-11-06 | 1999-11-08 | Transmitting / receiving device and transmitting / receiving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1812392A true CN1812392A (en) | 2006-08-02 |
| CN100547991C CN100547991C (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100058756A Expired - Fee Related CN100547991C (en) | 1998-11-06 | 1999-11-08 | Dispensing device and sending method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100547991C (en) |
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1999
- 1999-11-08 CN CNB2006100058756A patent/CN100547991C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN100547991C (en) | 2009-10-07 |
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