CN101057432A - Data communication system, receiver apparatus and transmitter apparatus - Google Patents

Data communication system, receiver apparatus and transmitter apparatus Download PDF

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Publication number
CN101057432A
CN101057432A CNA2005800364897A CN200580036489A CN101057432A CN 101057432 A CN101057432 A CN 101057432A CN A2005800364897 A CNA2005800364897 A CN A2005800364897A CN 200580036489 A CN200580036489 A CN 200580036489A CN 101057432 A CN101057432 A CN 101057432A
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signal
mentioned
traffic channel
control channel
unit
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石仓胜利
福政英伸
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Sharp Corp
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Sharp Corp
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Abstract

In a wireless communication system based on OFDM technique, multiplexing of a control channel and a low-rate data channel is achieved without decreasing the transmission rate of a traffic channel. In a communication system that is managed by multiplexing a traffic channel, in which a high-rate data transmission is performed, with a control channel in which a low-rate transmission of control information is performed, an OFDM signal carrying the traffic channel is multiplexed with an OFDM signal carrying a control signal for transmission. In a receiving station, the control channel is firstly demodulated and decoded, and it is then determined whether the signal of the traffic channel includes any signals addressed to the local station. If so determined, the control channel signal is cancelled from the received signal in accordance with the quality of the wireless communication path, and then the traffic channel is demodulated.

Description

Data communication system, receiving system and dispensing device
Technical field
The present invention relates to data communication system, receiving system and dispensing device, more particularly, relate to the data communication system of having used the OFDM technology.
Background technology
Use the demand of the wireless data communication system of electric wave to increase just day by day for WLAN or mobile telephone system etc., people expect to have and can effectively utilize the technology that limited frequency resource realizes high-speed data communication.
OFDM (Orthogonal Frequency Division Multiplexing: OFDM) technology be with IEEE802.11g and IEEE802.11a be representative be used for realizing employed technology in the broadband wireless communications of high-speed wireless LAN.
(Multi-CarrierCode Division Multiple Access: MC-CDMA) mode is that the OFDM technology is basis and the technology of having introduced the thought of spread spectrum and code division multiplexing for OFCDM (Orthogonal Frequency and Code DivisionMultiplexing: orthogonal frequency and code division multiplexing) technology and MC-CDMA.Though this term of MC-CDMA also is used for the parallel system that uses a plurality of narrow-band CDMA signals to communicate, only limit to represent technology here based on OFDM.Further, can think that the MC-CDMA based on the OFDM technology is included among the OFCDM, below use this term of OFCDM to express.Following simple declaration OFDM and OFCDM.
Figure 41 represents the block diagram of OFDM.The transmission symbolic number of supposing a frame is Nf=Ns * Nc.Nc vice carrier number, Ns represents the OFDM symbolic number.In addition also comprise usually and be used for the frequency pilot sign that channel (wireless communications path) is estimated, here with its omission.
In the transmitter of Figure 41 (A), make transmission symbol decompose be each subcarrier component by S/P conversion (string-and conversion) 101 by each Nc symbol parallel, implement IFFT (inverse fast fourier transform) then and handle 102, and make it become timing signal sequence by implementing P/S conversion (also-go here and there conversion) 103.Here, the processing unit of FFT (fast Fourier transform) is 1 symbol of OFDM.In addition, in Add GI104, for each OFDM symbol inserts GI (protection at interval).As shown in figure 42, the signal with OFDM symbol afterbody inserts OFDM symbol front as protection at interval.The interference that the delay ripple that can suppress wireless communications path by means of this protection interval is caused.
What Figure 43 represented is the configuration of the transmission symbol in the interior transmission signal of a frame.In this example, Ns OFDM symbol formed a frame; In the OFDM symbol, send symbol and be arranged in order according to frequency direction.
In the receiver of Figure 41 (B), utilize Remove GI106 to implement the intercepting of OFDM symbol that is FFT unit according to the testing result that regularly detects 105, after implementing S/P conversion 107, carry out FFT and handle 108, extract each subcarrier component.Carry out P/S conversion 109, can obtain the identical symbol sebolic addressing of symbol arrangement order with transmit frame thereafter.
Among the OFCDM,, like that identical transmission symbol is disposed in a plurality of subcarriers or a plurality of OFDM symbol as shown in figure 44 by implementing the spread spectrum of frequency domain or time domain.Among Figure 44 (A), the spread spectrum rate of frequency domain is 4, sends same data symbol by 4 subcarriers.Among Figure 44 (B), the spread spectrum rate of frequency domain and time domain all is 2, sends same data symbol by 2 subcarriers, 2 OFDM symbols.The spread spectrum rate of the spread spectrum of implementing in these examples is 4, and the transmission speed that therefore sends symbol is 1/4.This is the consideration for the frequency spectrum spread spectrum, sends signal by using than essential frequency band or bigger frequency band or the time slot of time slot in the transmission that sends symbol, can reduce signal power density.In addition, use wide frequency ranges can obtain the frequency diversity effect.Further, when spread spectrum, use orthogonal code to carry out multiplying, can use same domain that difference is sent symbol thus and carry out multiplexed transmission as spreading code.This is a kind of thinking of code division multiplexing.Can improve transmission speed by means of code division multiplexing, and can be corresponding to communication path environment control transmission speed.
Figure 45 is the general OFCDM transmitter of expression and the block diagram of receiver, and Figure 45 (A) represents transmitter, and Figure 45 (B) represents receiver.
The spread spectrum rate of supposing transmitter frequency domain spread spectrum is SF.In addition, the transmission symbolic number of a frame is 1/SF with the ratio of OFDM.By the spread processing of S/P conversion 111, become each subcarrier component at the parallel symbol enforcement frequency domain of each Nc/SF symbol.Handle in 112 at frequency domain spread spectrum, 1 symbol copy is SF subcarrier component and multiply by spreading code { C 0, C 1..., C SF-1.Here use code length as the complex values sequence of SF as spreading code.Further implement IFFT processing 113, P/S conversion 114, become timing signal sequence.Further, in Add GI115, for each OFDM symbol inserts GI (protection at interval).
In the receiver of Figure 45 (B), regularly implementing regularly to detect channel estimating in the detections/channel estimation process 116, ask for timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing.According to this channel estimation value, the weight coefficient of being taken advantage of on each subcarrier after the decision FFT.
Received signal is removed protection at interval by Remove GI117, and carries out the control channel demodulation.Control channel has implemented to carry out the OFCDM modulation of frequency domain spread spectrum, therefore utilizes the conjugate complex number of employed spreading code in the spread spectrum and carries out contrary spread processing by the weight coefficient that channel estimation unit is tried to achieve.Definite method of weight coefficient has multiple, uses and the corresponding channel coefficients { W of each subcarrier here 0, W 1..., W N-1Conjugate complex number.Here implement S/P conversion 118, FFT processing 119, the contrary spread spectrum 120 of frequency domain, P/S conversion 121.
In cell mobile communication systems of future generation, also SCS-MC-CDMA mode (non-patent literature 1) or the same VSF-OFCDM mode (non-patent literature 2) based on OFDM of research based on OFDM is being discussed.Configuration control channel and communication channel in the different subcarriers of SCS-MC-CDMA mode on frequency axis.On the other hand, the VSF-OFCDM mode is a kind ofly to utilize data channel that orthogonal code is multiplexed in spread spectrum in the time domain and the method for the control channel of spread spectrum in two territories of temporal frequency.
The invention relevant with OFDM and MC-CDMA has patent documentation 1.This be a kind of in cell mobile communication systems, be the technology that unit switch to use OFDM or MC-CDMA with the sending time slots according to the communication path state between portable terminal-base station.
Patent documentation 1: the spy opens the 2004-158901 communique
Non-patent literature 1: long hand etc., " discussion that the Common Control Channel in the SCS-MC-CDMA mode is synchronous ", the comprehensive conference B-5-81 of electronic information communication association in 2004
Non-patent literature 2: bank mountain etc., " the outdoor test result of the adaptive modulation-demodulation/chnnel coding in the down link VSF-OFCDM broadband wireless access ", 2004 years comprehensive conference B-5-94 of electronic information communication association
Summary of the invention
In above-mentioned SCS-MC-CDMA, the part of a plurality of subcarriers of using among the OFDM is distributed as control channel.Can occur particular subcarriers in this case can't be used for data and transmit, be difficult to obtain problems such as frequency diversity effect.In addition, the code reuse number is subjected to distributing to the restriction of the part of control channel among the VSF-OFCDM, in addition, must allocation of codes so that make control channel and Traffic Channel is unlikely to disturb, thereby exist the problem that the degree of freedom of wireless parameters such as spread spectrum rate reduces.In addition, though can consider the special symbol in the frame is distributed as control channel, exist equally also that transmission speed descends, degradation problem under the degree of freedom of wireless parameter.
For example, be set in spread spectrum rate under 8 the situation Traffic Channel, though control channel be low speed and also with the corresponding spread spectrum rate of the transmission speed of necessity be 128, also can only be 7 codes of traffic channel assignments, transmission speed descends.
Under the situation of multiplexed lasting low speed data channel and discrete high speed data channels, also can produce same problem.
The present invention has used for reference aforesaid actual conditions, and purpose is to solve the multiplexed relevant problem of the control channel of the Traffic Channel that can realize high speed data transfer among the cell mobile communication systems of future generation etc. and transmission low speed control signal.
Purpose of the present invention also is to solve the multiplexed relevant problem of implementing the Traffic Channel 1 of high-speed data transfer among the cell mobile communication systems of future generation etc. and implementing the Traffic Channel 2 that low speed data transmits.
In order to address the above problem, need with the higher method for channel allocation of different, the degree of freedom before.That is, use Traffic Channel and control channel is multiplexed at all non-orthogonal signal of time shaft, frequency axis, code.
By using non-orthogonal signal, control channel and Traffic Channel mutual interference mutually.In general, Traffic Channel speed height, its transmission needs very big power.On the other hand, control channel speed is lower, and the channel overall power is little.But if make mistakes in the control channel, therefore the data of the channel of just might correctly managing business require control channel to have very high communication quality.The power of control channel is very little with respect to the ratio of signal integral body, and is even therefore increase the power of control channel, also very little to the influence of signal integral body.Therefore, when distributing power, set bigger control channel power, to reduce error rate.Thus, even control channel is subjected to also can correctly receiving from the interference of Traffic Channel.
If increase the power of control channel, then control channel also increases the interference of Traffic Channel.At this problem, can adopt ELIMINATION OF ITS INTERFERENCE (cancelling) technology to be tackled in case of necessity.Even under the very high situation of communication path quality, do not use the ELIMINATION OF ITS INTERFERENCE technology can realize the reception of Traffic Channel yet.Under the lower situation of communication path quality, can use the method for the copy (replica) that after judging the control channel symbol, generates control channel signals and after to the control channel decoding coding and the method for ghost once more, and can distinguish use according to communication path quality.
Under the information of the Traffic Channel that sends in the same frame is included in situation in the control channel, at first control channel is handled, judge that thus whether comprising in the Traffic Channel with this base station is the information of destination, the reception that does not need to carry out at irrelevant Traffic Channel is handled.When comprising in the Traffic Channel with this base station is under the not so good situation of the information of destination and communication path quality, then generates the signal copy of control channel and it is cancelled from received signal, quality variation that thus can the suppressed traffic channel.Under the situation of the information of the Traffic Channel of the frame that sends after being loaded with in the control channel that comprises in this frame that formerly sends also is effective.
In addition, more than explanation is the combination of high-rate traffic channel and low speed control channel, but most of function also can directly apply to the situation that has 2 different Traffic Channels of speed, is not limited to the combination of control channel and Traffic Channel.
More specifically show the measure that solves problem of the present invention below.
The 1st technical measures are communication systems of a kind of use OFDM (OFDM) technology, it is characterized in that: comprise be used for service data transmission Traffic Channel and be used for the control channel of transmitting control data; By utilizing the traffic channel signal that OFDM modulation generates and utilizing the multiplexed transmission signal that generates of control channel signals that generates at any one all non-orthogonal signal of time, frequency, code with respect to traffic channel signal.
The 2nd technical measures are communication systems of the 1st technical measures, it is characterized in that, control channel signals is to spread to a plurality of subcarriers of the traffic channel signal after the OFDM modulation or the signal in a plurality of OFDM symbol or this two territories.
The 3rd technical measures are communication systems of the 1st technical measures, it is characterized in that, control channel signals is to utilize low speed packet sign indicating number encoded signals, and this code word is a kind of signal that a plurality of subcarriers of utilizing single OFDM symbol send that constitutes.
The 4th technical measures are communication systems of the 1st technical measures, it is characterized in that, receiving base station one side, receive Traffic Channel and control channel by multiplexed signal, according to judging that by carrying out signaling point behind the demodulation control channel resulting receiving symbol generates duplicating of the control channel signals that is multiplexed to received signal, carry out the Traffic Channel demodulation after from received signal, removing the control channel signals component.
The 5th technical measures are communication systems of the 1st technical measures, it is characterized in that, the data of control channel have been implemented error correction coding, receiving base station one side, receive Traffic Channel and control channel by multiplexed signal, according to duplicating of the control channel signals that is multiplexed to received signal by the resulting control channel data generation of demodulate/decode control channel, from received signal, remove the demodulation process that the control channel signals component is carried out Traffic Channel afterwards.
The 6th technical measures are communication systems of the 1st technical measures, it is characterized in that, the data of control channel have been implemented error correction coding, and the target address information of the Traffic Channel that comprised at that time in the data of control channel or after this sent, receiving base station one side, receive Traffic Channel and control channel by multiplexed signal, the demodulate/decode control channel extracts the control channel data, judged that whether comprising in the Traffic Channel with this base station was the information of destination according to past or resulting at that time control information, when Traffic Channel comprises with this base station is under the situation of information of destination, generate duplicating of the control channel signals that is multiplexed to received signal according to the control channel data extracted, from received signal, remove the demodulation process of carrying out Traffic Channel after the control channel signals component.
The 7th technical measures are communication systems of a kind of use OFDM (OFDM) technology, it is characterized in that: comprise be used for the transmitting high speed business datum Traffic Channel 1 and be used for transmitting the Traffic Channel 2 of low-speed service data; Signal by will utilizing the Traffic Channel 1 that OFDM modulation generates and utilize the multiplexed transmission signal that generates of signal of the Traffic Channel 2 that generates at any one all non-orthogonal signal of time, frequency, code with respect to the signal of Traffic Channel 1.
The 8th technical measures are communication systems of the 7th technical measures, it is characterized in that, the signal of Traffic Channel 2 is to spread to a plurality of subcarriers of signal of the Traffic Channel 1 after OFDM modulation or the signal in a plurality of OFDM symbol or this two territories.
The 9th technical measures are communication systems of the 7th technical measures, it is characterized in that, the signal of Traffic Channel 2 is to utilize low speed packet sign indicating number encoded signals, and this code word is a kind of signal that a plurality of subcarriers of utilizing single OFDM symbol send that constitutes.
The 10th technical measures are communication systems of the 7th technical measures, it is characterized in that, receiving base station one side, receive Traffic Channel 1 and Traffic Channel 2 by multiplexed signal, according to judging that by carrying out signaling point after the demodulation Traffic Channel 2 symbol of resulting Traffic Channel 2 generates the duplicating of signal of the Traffic Channel 2 be multiplexed to received signal, from received signal, remove the demodulation process of carrying out Traffic Channel 1 after the signal component of Traffic Channel 2.
The 11st technical measures are communication systems of the 7th technical measures, it is characterized in that, the data of Traffic Channel 2 have been implemented error correction coding, receiving base station one side, receive Traffic Channel 1 and Traffic Channel 2 by multiplexed signal, generate the duplicating of signal of the Traffic Channel 2 that is multiplexed to received signal according to the data by demodulate/decode Traffic Channel 2 resulting Traffic Channels 2, from received signal, remove the demodulation of carrying out Traffic Channel 1 after the signal component of Traffic Channel 2.
The 12nd technical measures are dispensing devices of a kind of use OFDM (OFDM) modulation, it is characterized in that having: traffic channel data is carried out the unit that OFDM modulation back generates traffic channel signal; Utilization generates the unit of control channel signals according to the control channel data at any one all non-orthogonal signal of time, frequency, code with respect to traffic channel signal; By with the multiplexed unit that sends signal that generates of traffic channel signal and control channel signals.
The 13rd technical measures are dispensing devices of the 12nd technical measures, it is characterized in that the control channel signals generation unit comprises and will be used for the control channel symbols spread of transmitting control channel data to a plurality of subcarriers of the traffic channel signal after OFDM modulation or the unit in a plurality of OFDM symbol or this two territories.
The 14th technical measures are dispensing devices of the 12nd technical measures, it is characterized in that the control channel signals generation unit comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
The 15th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 12nd technical measures, it is characterized in that having: according to judging that by carrying out signaling point behind the demodulation control channel resulting receiving symbol generates the unit that duplicates of the control channel signals that is multiplexed to received signal; From received signal, remove the unit of control channel signals component.
The 16th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 12nd technical measures, it is characterized in that, the data of control channel have been implemented error correction coding, have: according to the unit that duplicates that generates the control channel signals that is multiplexed to received signal by the resulting control channel data of demodulate/decode control channel; From received signal, remove the unit of control channel signals component.
The 17th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 12nd technical measures, it is characterized in that, the data of control channel have been implemented error correction coding, have: will extract the unit of control channel data after the control channel demodulate/decode, judged that whether comprising in the Traffic Channel with this base station was the information of destination according to past or resulting at that time control information, when Traffic Channel comprises with this base station is under the situation of information of destination, generate duplicating of the control channel signals that is multiplexed to received signal according to the control channel data extracted, from received signal, remove the demodulation process of carrying out Traffic Channel after the control channel signals component.
The 18th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 12nd technical measures, it is characterized in that, have: receive Traffic Channel and control channel by multiplexed signal, according to the demodulation control channel and judge that resulting control channel symbol generates the elimination function 1 of duplicating, remove the control channel signals component from received signal of control channel; Receive Traffic Channel and control channel by multiplexed signal, generate the elimination function 2 of duplicating, from received signal, remove the control channel signals component of the control channel that is multiplexed to received signal according to the resulting control channel data of demodulate/decode control channel; According to the quality of communication path, select to eliminate function 1, eliminate function 2 and do not have the demodulation process of eliminating any one among this three and carrying out Traffic Channel.
The 19th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 12nd technical measures, it is characterized in that, only have following two any one that remove among the functions and remove function: receive Traffic Channel and control channel by multiplexed signal, according to the demodulation control channel and judge that resulting control channel symbol generates the elimination function 1 of duplicating, remove the control channel signals component from received signal of the control channel signals that is multiplexed to received signal; Receive Traffic Channel and control channel by multiplexed signal, generate the elimination function 2 of duplicating, from received signal, remove the control channel signals component of the control channel that is multiplexed to received signal according to the resulting control channel data of demodulate/decode control channel; According to the quality of communication path, select to have and eliminate and do not have any one among the elimination and carry out the demodulation of Traffic Channel.
The 20th technical measures are dispensing devices of a kind of use OFDM (OFDM) modulation, it is characterized in that having: the data of Traffic Channel 1 are carried out the unit that OFDM modulation back generates the signal of Traffic Channel 1; Utilization generates the unit of the signal of Traffic Channel 2 at any one all non-orthogonal signal of time, frequency, code with respect to the signal of Traffic Channel 1; By with the multiplexed unit that sends signal that generates of the signal of the signal of Traffic Channel 1 and Traffic Channel 2.
The 21st technical measures are dispensing devices of the 20th technical measures, it is characterized in that the signal generation unit of Traffic Channel 2 comprises and will be used for sending the symbols spread of Traffic Channel 2 to a plurality of subcarriers of the signal of the Traffic Channel 1 after the OFDM modulation or the unit in a plurality of OFDM symbol or these two territories.
The 22nd technical measures are dispensing devices of the 20th technical measures, it is characterized in that the signal generation unit of Traffic Channel 2 comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
The 23rd technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 20th technical measures, it is characterized in that having: according to judging that by carrying out signaling point behind the demodulation control channel 2 symbol of resulting Traffic Channel 2 generates the unit that duplicates of the signal of the Traffic Channel 2 that is multiplexed to received signal; From received signal, remove the unit of the signal component of Traffic Channel 2.
The 24th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 20th technical measures, it is characterized in that, the data of Traffic Channel 2 have been implemented error correction coding, have:, duplicate the unit of the signal of the above-mentioned Traffic Channel 2 that is multiplexed to received signal according to data by demodulate/decode Traffic Channel 2 resulting Traffic Channels 2; From received signal, remove the unit of the signal component of Traffic Channel 2.
The 25th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 20th technical measures, it is characterized in that having: according to the elimination function 1 of duplicating, from received signal, remove the signal component of Traffic Channel 2 of the signal that generates the Traffic Channel 2 that is multiplexed to received signal by the symbol of judging resulting Traffic Channel 2 after the demodulation Traffic Channel 2; Generate the elimination function 2 of duplicating, from received signal, remove the signal component of Traffic Channel 2 of the signal of the Traffic Channel 2 that is multiplexed to received signal according to data by demodulate/decode Traffic Channel 2 resulting Traffic Channels 2; According to the quality of communication path, select to eliminate function 1, eliminate function 2 and do not have the demodulation of eliminating any one among this three and carrying out Traffic Channel 1.
The 26th technical measures are a kind of receiving systems that are used for receiving the signal that is sent by the 20th technical measures, it is characterized in that only having following two any one that remove among the functions and remove function: according to the elimination function 1 of duplicating, from received signal, remove the signal component of Traffic Channel 2 of the signal that generates the Traffic Channel 2 that is multiplexed to received signal by the symbol of judging resulting Traffic Channel 2 after the demodulation Traffic Channel 2; Generate the elimination function 2 of duplicating, from received signal, remove the signal component of Traffic Channel 2 of the Traffic Channel 2 that is multiplexed to received signal according to data by demodulate/decode Traffic Channel 2 resulting Traffic Channels 2; According to the quality of communication path, select to have and eliminate and do not have any one among the elimination and carry out the demodulation of Traffic Channel 1.
The 27th technical measures are a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes the OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, and it has: traffic channel data is carried out the traffic channel signal generation unit that OFCDM modulation back generates traffic channel signal; Utilization generates the control channel signals generation unit of control channel signals according to the control channel data at any one all non-orthogonal signal of time, frequency, code with respect to traffic channel signal; By with the multiplexed transmission signal generation unit that sends signal that generates of traffic channel signal and control channel signals.
The 28th technical measures are a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes the OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, and it has: traffic channel data is carried out the traffic channel signal generation unit that OFCDM modulation back generates traffic channel signal; The control channel data are modulated the control channel signals generation unit that the back generates control channel signals in any way; Switch to control channel signals and traffic channel signal at any one all mutually non-orthogonal signal of time, frequency, code with at the switch unit of any one all mutually orthogonal signal of time, frequency, code; By with the multiplexed transmission signal generation unit that sends signal that generates of traffic channel signal and control channel signals.
The 29th technical measures are dispensing devices of the 28th technical measures, it is characterized in that, switch unit switches to non-orthogonal signal under the good situation of the quality of communication path, and in the next orthogonal signalling that switch to of the quality condition of severe of communication path.
The 30th technical measures are dispensing devices of the 28th technical measures, it is characterized in that, switch unit switches nonopiate signal and orthogonal signalling according to the presently used spread spectrum yardage of traffic channel signal.
The 31st technical measures are dispensing devices of any one technical measures among the 27th technical measures to the 30 technical measures, it is characterized in that, the control channel signals that is generated by the control channel signals generation unit is the signal after the OFCDM modulation.
The 32nd technical measures are dispensing devices of the 27th technical measures, it is characterized in that the control channel signals generation unit comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
The 33rd technical measures are dispensing devices of any one technical measures among the 27th technical measures to the 32 technical measures, it is characterized in that having: be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to control channel signals; Traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Contain the control channel signals demodulation, generate the unit that duplicates of the control channel signals be multiplexed to received signal and from received signal, remove the control channel clearing cell of the unit of control channel signals component according to the signal after the demodulation.
The 34th technical measures are receiving systems of the 33rd technical measures, it is characterized in that, the control channel clearing cell is duplicated according to the control channel signals of utilizing the resulting control channel symbol of the identifying unit of signaling point being judged after the demodulation control channel signals to generate to be multiplexed to received signal, and removes the demodulation of carrying out traffic channel signal behind the control channel signals component from received signal.
The 35th technical measures are receiving systems of the 33rd technical measures, it is characterized in that, the control channel clearing cell utilizes after according to the demodulation control channel signals error correction decode unit resulting control channel data of decoding to generate duplicating of the control channel signals that is multiplexed to received signal, and removes the demodulation process of carrying out traffic channel signal behind the control channel signals component from received signal.
The 36th technical measures are receiving systems of the 34th technical measures or the 35th technical measures, it is characterized in that the control channel clearing cell judged according to past or resulting at that time control information that whether comprising in the Traffic Channel with this base station was the information of destination, when comprising in the Traffic Channel with this base station is under the situation of information of destination, generation is multiplexed to the duplicating of control channel signals of received signal, and removes the demodulation process of carrying out traffic channel signal behind the control channel signals component from received signal.
The 37th technical measures are receiving systems of the 33rd technical measures, it is characterized in that the control channel clearing cell has: according to utilizing identifying unit signaling point to be judged removing (1) unit that duplicating and from received signal, removing the control channel signals component of resulting control channel symbol generation control channel after the control channel signals demodulation; Generate removing (2) unit that duplicates and from received signal, remove the control channel signals component of the control channel that is multiplexed to received signal according to the resulting control channel data of demodulate/decode control channel; According to the quality of communication path, the demodulation process of Traffic Channel is carried out in any one unit among this three of unit who selects to eliminate (1) unit, elimination (2) unit and do not carry out elimination.
The 38th technical measures are receiving systems of the 33rd technical measures, it is characterized in that, the control channel clearing cell only has any one clearing cell among following two clearing cells: receive Traffic Channel and control channel by multiplexed signal, according to the demodulation control channel and judge that resulting control channel symbol generates elimination (1) unit that duplicates and remove the control channel signals component from received signal of the control channel signals that is multiplexed to received signal; Receive Traffic Channel and control channel generate the control channel that is multiplexed to received signal by multiplexed signal, according to the resulting control channel data of demodulate/decode control channel elimination (2) unit that duplicates, from received signal, removes the control channel signals component; According to the quality of communication path, select whether to carry out and remove and the demodulation of execution Traffic Channel.
The 39th technical measures are the receiving systems that are used for receiving the signal that dispensing device sent of any one technical measures among the 28th technical measures to the 30 technical measures, it is characterized in that having: traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to control channel signals; Be used for switching time, frequency or code, so that the switch unit that control channel signals and traffic channel signal can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after the control channel demodulation or receive the control channel clearing cell that data generate the copied cells that duplicates of the control channel signals that is multiplexed to received signal and be used for removing the removal unit of control channel signals component from received signal; If control channel is above-mentioned orthogonal signalling, then directly carry out the Traffic Channel demodulation; If control channel is above-mentioned nonopiate signal, then utilize the control channel clearing cell from received signal, to remove the demodulation of carrying out Traffic Channel behind the control channel.
The 40th technical measures are the receiving systems that are used for receiving the signal that dispensing device sent of any one technical measures among the 28th technical measures to the 30 technical measures, it is characterized in that having: traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to control channel signals; Be used for switching time, frequency or code, so that the switch unit that control channel signals and traffic channel signal can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after the control channel demodulation or receive the control channel clearing cell that data generate the copied cells that duplicates of the control channel signals that is multiplexed to received signal and be used for removing the removal unit of control channel signals component from received signal; The control channel clearing cell is according to the quality of communication path and be orthogonal signalling or nonopiate signal, whether utilization is selected to carry out by removing the unit by the signal judgement that copied cells duplicated is out removed control channel from received signal, carry out the demodulation of above-mentioned Traffic Channel thus.
The 41st technical measures are a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes the OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, and it has: traffic channel data 1 is carried out traffic channel signal 1 generation unit that the OFCDM modulation generates traffic channel signal 1; Utilization is traffic channel signal 2 generation units that traffic channel data 2 generates traffic channel signal 2 with respect to the signal of Traffic Channel 1 any one all non-orthogonal signal at time, frequency, code according to the traffic channel data than traffic channel data 1 low speed; By with traffic channel signal 1 and the traffic channel signal 2 multiplexed transmission signal generation units that send signal that generate.
The 42nd technical measures are a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes the OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, and it has: traffic channel data 1 is carried out traffic channel signal 1 generation unit that the OFCDM modulation generates traffic channel signal 1; Traffic channel data 2 modulated in any way and generate the Traffic Channel 2 signal generation units of the signal of Traffic Channel 2; The signal that switches to the signal of Traffic Channel 2 and Traffic Channel 1 is at any one all mutually non-orthogonal signal of time, frequency, code with at the switch unit of any one all mutually orthogonal signal of time, frequency, code; By with traffic channel signal 1 and the traffic channel signal 2 multiplexed transmission signal generation units that send signal that generate.
The 43rd technical measures are dispensing devices of the 42nd technical measures, it is characterized in that, switch unit switches to non-orthogonal signal under the good situation of the quality of communication path, and in the next orthogonal signalling that switch to of the quality condition of severe of communication path.
The 44th technical measures are dispensing devices of the 42nd technical measures, it is characterized in that, switch unit switches nonopiate signal and orthogonal signalling according to the presently used spread spectrum yardage of the signal of Traffic Channel 1.
The 45th technical measures are dispensing devices of any one technical measures among the 41st technical measures to the 44 technical measures, it is characterized in that, the signal of the Traffic Channel 2 that is generated by traffic channel signal 2 generation units is the signals after the OFCDM modulation.
The 46th technical measures are dispensing devices of the 41st technical measures, it is characterized in that traffic channel signal 2 generation units comprise the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
The 47th technical measures are the receiving systems that are used for receiving by the signal that dispensing device sent of any one technical measures among the 41st technical measures to the 46 technical measures, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; The traffic channel data of carrying out than traffic channel data 1 low speed according to traffic channel signal 2 is Traffic Channel 2 signal processing units of the demodulation process of traffic channel data 2; Comprise with the unit that duplicates that generates the traffic channel signal 2 that is multiplexed to received signal and be used for from received signal removing Traffic Channel 2 clearing cells of unit of the component of traffic channel signal 2.
The 48th technical measures are receiving systems of the 47th technical measures, it is characterized in that, according to Traffic Channel 2 demodulation and utilize the error correction decode unit resulting traffic channel data 2 of decoding, the signal component of duplicating and from received signal, remove Traffic Channel 2 of the traffic channel signal of utilizing the Traffic Channel clearing cell to generate to be multiplexed to received signal 2.
The 49th technical measures are receiving systems of the 47th technical measures, it is characterized in that, symbol according to traffic channel signal 2 demodulation also being utilized the resulting Traffic Channel 2 of identifying unit of carrying out the signaling point judgement utilizes the generation of Traffic Channel clearing cell to be multiplexed to the component that duplicates and remove traffic channel signal 2 from received signal of the traffic channel signal 2 of received signal.
The 50th technical measures are receiving systems of the 47th technical measures, it is characterized in that the Traffic Channel clearing cell has: according to Traffic Channel 2 demodulation and utilize identifying unit to carry out signaling point and judge that the symbol of resulting Traffic Channel 2 generates elimination (1) unit that duplicates and remove the component of traffic channel signal 2 from received signal of the traffic channel signal 2 be multiplexed to received signal; According to Traffic Channel 2 demodulation and utilize the error correction decode unit resulting traffic channel data 2 of decoding to generate elimination (2) unit that duplicates and from received signal, remove the signal component of Traffic Channel 2 of the traffic channel signal 2 that is multiplexed to received signal; According to the quality of communication path, the demodulation of Traffic Channel 1 is carried out in any one unit among this three of unit who selects to eliminate (1) unit, elimination (2) unit and do not carry out elimination.
The 51st technical measures are receiving systems of the 47th technical measures, it is characterized in that the Traffic Channel clearing cell only has any one clearing cell among following two clearing cells: according to Traffic Channel 2 demodulation and judge that the symbol of resulting Traffic Channel 2 generates elimination (1) unit that duplicates and remove the component of traffic channel signal 2 from received signal of the signal of the Traffic Channel 2 be multiplexed to received signal; According to elimination (2) unit that duplicates and from received signal, remove the component of traffic channel signal 2 that generates the Traffic Channel 2 that is multiplexed to received signal by demodulate/decode Traffic Channel 2 resulting traffic channel datas 2; According to the quality of communication path, select whether to carry out removing to carry out the demodulation of Traffic Channel 1.
The 52nd technical measures are the receiving systems that are used for receiving by the signal that dispensing device sent of any one technical measures among the 42nd technical measures to the 44 technical measures, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; Traffic channel signal 2 is separated Traffic Channel 2 signal processing units of the demodulation process of transferring to carry out traffic channel data 2; Be used for switching time, frequency or code, so that the switch unit that traffic channel signal 1 and traffic channel signal 2 can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after traffic channel signal 2 demodulation or receive Traffic Channel 2 clearing cells of removal unit that data generate the copied cells that duplicates of the traffic channel signal 2 that is multiplexed to received signal and be used for removing the component of traffic channel signal 2 from received signal; If traffic channel signal 2 is orthogonal signalling, then directly carry out the demodulation of traffic channel data 1; If traffic channel signal 2 is non-orthogonal signalling, then will from received signal, remove the demodulation that traffic channel data 1 is carried out in traffic channel signal 2 backs by the signal that Traffic Channel 2 clearing cells are replicated.
The 53rd technical measures are the receiving systems that are used for receiving by the signal that dispensing device sent of any one technical measures among the 42nd technical measures to the 44 technical measures, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; Traffic channel signal 2 is separated Traffic Channel 2 signal processing units of the demodulation process of transferring to carry out traffic channel data 2; Be used for switching time, frequency or code, so that the switch unit that traffic channel signal 1 and traffic channel signal 2 can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after traffic channel signal 2 demodulation or receive Traffic Channel 2 clearing cells of removal unit that data generate the copied cells that duplicates of the traffic channel signal 2 that is multiplexed to received signal and be used for removing the component of traffic channel signal 2 from received signal; Traffic Channel 2 clearing cells are according to the quality of communication path and be orthogonal signalling or nonopiate signal, whether utilization is selected to carry out by removing the unit by the signal judgement that copied cells duplicated is out removed traffic channel signal 2 from received signal, carry out the demodulation of traffic channel data 1 thus.
The 54th technical measures are a kind of data communication systems, it is characterized in that having: the receiving system of any one technical measures among the dispensing device of any one technical measures among the 27th technical measures to the 32 technical measures and the 33rd technical measures to the 38 technical measures.
The 55th technical measures are a kind of data communication systems, it is characterized in that, have: the dispensing device of any one technical measures among the 28th technical measures to the 31 technical measures and the receiving system in the 39th technical measures or the 40th technical measures.
The 56th technical measures are a kind of data communication systems, it is characterized in that having: the receiving system of any one technical measures among the receiving system of any one technical measures among the 41st technical measures to the 46 technical measures and the 47th technical measures to the 51 technical measures.
The 57th technical measures are a kind of data communication systems, it is characterized in that having: the dispensing device of any one technical measures among the 42nd technical measures to the 45 technical measures and the receiving system of any one technical measures among the 52nd technical measures or the 53rd technical measures.
If like that the part of a plurality of subcarriers is distributed as control channel according to SCS-MC-CDMA, then particular subcarriers just can not be used for transfer of data.In addition, if be the coding that Traffic Channel and control channel distribute quadrature like that according to VSF-OFCDM, then suitable with spread spectrum rate code can't be distributed to Traffic Channel.For example, be set in spread spectrum rate under 8 the situation Traffic Channel, though control channel be low speed and also with the corresponding spread spectrum rate of the transmission speed of necessity be 128, also can only be 7 codes of traffic channel assignments, transmission speed descends.
Relatively this, can multiplexed control channel among the present invention and don't can reduce the transmission speed of Traffic Channel.Further, by adopting the removing of removing the control channel component, the quality of Traffic Channel can be descended and suppress to be Min..
In addition, by means of the dispensing device among the present invention, receiving system and communication system, using under the situation of OFCDM as control channel, according to the quality of communication path and the code number that is using, the code or the non-orthogonal code of the spreading code quadrature that use and Traffic Channel are used can transmit thus more efficiently.
Description of drawings
Fig. 1 is the block diagram of the transmitter in the 1st execution mode of the present invention.
Fig. 2 is the traffic channel signal generating unit in the 1st execution mode of the present invention and the block diagram of control channel signals generating unit.
Fig. 3 is the block diagram of the control channel signals generating unit in the 2nd execution mode of the present invention.
Fig. 4 is the block diagram of the control channel signals generating unit in the 3rd execution mode of the present invention.
Fig. 5 is the block diagram of the transmitter in the 4th execution mode of the present invention.
Fig. 6 is the block diagram of the traffic channel signal control channel signals generating unit in the 4th execution mode of the present invention.
Fig. 7 is the block diagram of the transmitter in the 5th execution mode of the present invention.
Fig. 8 is the block diagram of the Traffic Channel control channel signals generating unit in the 5th execution mode of the present invention.
Fig. 9 is the block diagram of the receiver in the 6th execution mode of the present invention.
Figure 10 is the block diagram of the control channel signals remover portion in the of the present invention the 6th and the 7th execution mode.
Figure 11 is the block diagram of the receiver in the 7th execution mode of the present invention.
Figure 12 is the block diagram of the control channel signals remover portion in the of the present invention the 7th and the 9th execution mode.
Figure 13 is the block diagram of the receiver in the 8th execution mode of the present invention.
Figure 14 is the block diagram of the receiver in the 9th execution mode of the present invention.
Figure 15 is the block diagram of the receiver in the 10th execution mode of the present invention.
Figure 16 is the block diagram of the control channel signals remover portion in the 10th execution mode of the present invention.
Figure 17 is the flow chart of the receiver in the 11st execution mode of the present invention.
Figure 18 is the flow chart of the receiver in the 12nd execution mode of the present invention.
Figure 19 is the block diagram of the transmitter in the 13rd execution mode of the present invention.
Figure 20 is the block diagram of the traffic channel signal generating unit and the control channel signals generating unit of the transmitter in the 13rd execution mode of the present invention.
Figure 21 is the block diagram of the control channel signals generating unit of the transmitter in the 14th execution mode of the present invention.
Figure 22 is the block diagram of the control channel signals generating unit of the transmitter in the 15th execution mode of the present invention.
Figure 23 is the block diagram of the transmitter in the 16th execution mode of the present invention.
Figure 24 is the block diagram of the traffic channel signal control channel signals generating unit of the transmitter in the 16th execution mode of the present invention.
Figure 25 is the block diagram of the transmitter in the 17th execution mode of the present invention.
Figure 26 is the block diagram of the Traffic Channel control channel signals generating unit in the 17th execution mode of the present invention.
Figure 27 is the block diagram of the receiver in the 18th execution mode of the present invention.
Figure 28 is the block diagram of the control channel signals remover portion of the receiver in the 18th execution mode of the present invention.
Figure 29 is the block diagram of the receiver in the 19th execution mode of the present invention.
Figure 30 is the block diagram of the control channel signals remover portion of the receiver in the 19th execution mode of the present invention.
Figure 31 is the block diagram of the receiver in the 20th execution mode of the present invention.
Figure 32 is the block diagram of the receiver in the 21st execution mode of the present invention.
Figure 33 is the block diagram of the receiver in the 22nd execution mode of the present invention.
Figure 34 is the block diagram of the control channel signals remover portion of the receiver in the 22nd execution mode of the present invention.
Figure 35 is the block diagram of traffic channel signal generating unit, control channel signals generating unit and the orthogonal code generating unit of the transmitter in the 23rd execution mode of the present invention.
Figure 36 is the block diagram of the receiver in the 24th execution mode of the present invention.
Figure 37 is the block diagram of the receiver in the 25th execution mode of the present invention.
Figure 38 is the flow chart of the motion flow of the receiver in expression the of the present invention the 20th and the 21st execution mode.
Figure 39 is the flow chart of the motion flow of the receiver in expression the of the present invention the 20th and the 21st execution mode.
Figure 40 is the flow chart of the motion flow of the receiver in expression the 25th execution mode of the present invention.
Figure 41 is the block diagram of general OFDM.
Figure 42 is the protection figure at interval of expression ofdm signal.
Figure 43 is the figure of the structure of expression ofdm signal.
Figure 44 is the figure of the structure of expression OFCDM signal.
Figure 45 is the block diagram of general OFCDM.
Symbol description
1，5，24，100，104，1023，1121，1444...FEC?Encoder
2，6，25，101，105，1025，1122，1445...Interleaver
3，7，26，102，106，702，1026，1123，1226，1446...MOD
4,103... traffic channel signal generating unit
8,107,300,400... control channel signals generating unit
9... Traffic Channel control channel signals generating unit
11... timing detection/channel estimation process
12，234，950，1011，1110，1210，1310，1410...Remove?GI
13,904,956,1012,1124,1217, the 1420... memory
14,905,957,1013,1125,1218,1447... control channel signals remover portion
15... contrary spread processing
16，21，156，908，911，953，961，1020，1033，1118，1129，1222，1361，1364，1441，1449...Demod
17，22，909，912，954，962，1021，1034，1119，1130，1223，1362，1365，1442，1450...Deinterleaver
18，23，157，910，913，963，975，1022，1035，1120，1131，1224，1363，1366，1443，1451...Decoder
19，907，955...Decision
20,958,1126, the 1219... Traffic Channel is handled
41,81,87,91,92,141,151,201,230,230a, 230b, 236,920a, 920b, 930,970,980,1015,1028,1113,1213,1320...S/P conversion
44,85,97,155,204,205,232,232a, 232b, 238,924a, 924b, 933,960,974,1019,1032,1117,1128,1216,1221...P/S conversion
42,83,95,143,202a, 202b... scrambling
82,88,90,93,99,142,201a, 201b, 301, the 401... frequency domain spread spectrum is handled
43,84,96,231,231a, 231b, 932...IFFT handles
45，86，98，233，233a，233b...Add?GI
89，302...MUX
144... channel estimation value multiplying
94，147，148....+
152,202,237,921a, 921b, 971,1016,1029,1114,1214,1330...FFT handles
153,203,922a, 922b, 972,1017,1030,1115,1215... descrambling
108,1350,1440... orthogonal code generating unit
109... orthogonal code maker 1
110... orthogonal code maker 2
111... code switch
235... timing detector
240...GI、
500,700... Traffic Channel and control channel signals generating unit
501, the 934... adder calculator
701，1225...Enc
271,900,951,1010,1211,1300,1400... regularly detects and channel estimation process
903,1112... control channel signals handling part
1212,1430... control channel data-signal handling part
1340... control channel data-signal handling part (2)
906,952,1014,1027,1448... traffic channel signal handling part
1360... business datum signal processing part (2)
154,272,923a, 923b, 959,973,1018,1031,1116,1127, the contrary spread processing of 1220... frequency domain
270a, 270b, 931a, 931b... copies device
Embodiment
(the 1st execution mode)
In a lot of wireless communication systems, except voice data, image data and other packet datas etc. the business datum that exchanges between user terminal and the distant terminal, the control information that user terminal exchanges with system in order to move in this wireless communication system, the control information that is used for representing the attribute of the business datum that sent are carried out and communicate by letter.
As shown in Figure 1, traffic channel data and control channel data are respectively by FECEncoder1 among the present invention, 5 encode, and by Interleaver2,6 implement to interweave, by MOD3,7 implement modulation treatment, and the traffic channel data symbol is transformed to traffic channel signal by traffic channel signal generating unit 4, and the control channel symbol is transformed to control channel signals by control channel signals generating unit 8.These signals directly are added and send.
The details of expression traffic channel signal generating unit 4 and control channel signals generating unit 8 among Fig. 2.In the traffic channel signal generating unit 4 of Fig. 2 (A), after S/P conversion (string-and conversion) 41, multiply by the intrinsic scrambler in unit (scrambling 42), implement inverse fast fourier transform processing (IFFT processing) 43.Then, be transformed to timing signal sequence, give protection at interval by Add GI45 by P/S conversion (also-string conversion) 44.
In the control channel signals generating unit 8 of Fig. 2 (B), after S/P conversion 81, duplicate, so that the control channel symbol is sent by a plurality of subcarriers, multiply by spreading code then, carry out frequency domain spread spectrum thus and handle 82., as traffic channel signal generating unit 4 similarly multiply by unit intrinsic scrambler (scrambling 83), implement inverse fast fourier transform and handle (IFFT processing) 84 thereafter.Further, be transformed to timing signal sequence, give protection at interval by AddGI86 by P/S conversion 85.
(the 2nd execution mode)
The following describes the execution mode of the transmission signal generation of using the control channel generation method different with the 1st execution mode.The traffic channel signal generating unit 4 of the block diagram of Fig. 1 and Fig. 2 is identical with the 1st execution mode, but the structure of the control channel signals generating unit 8 of present embodiment is different from the 1st execution mode.This part as shown in Figure 3.In the control channel signals generating unit 8 of Fig. 3, the control channel symbol is arrived spreading code by each allocation of symbols by S/P conversion 87.To be that code is long be the orthogonal code of N (=number of sub) to each spreading code, utilizes this spreading code to carry out the frequency domain spread spectrum (frequency domain spread spectrum processing 88) of spread spectrum rate for N, and it is multiplexed to carry out code by MUX89 thereafter.Multiply by the intrinsic scrambler in unit then and carry out inverse Fourier transform processing (IFFT processing) 84, further, be transformed to timing signal sequence, give protection at interval by Add GI86 by P/S conversion 85.
Compare with the 1st execution mode, in the 2nd execution mode, can strengthen the spread spectrum rate.It is multiplexed only to implement code at the spread spectrum rate that increases, so the transmission speed of control channel remains unchanged.Increase the spread spectrum rate by the method for using the 2nd execution mode, can make interference equalization from Traffic Channel.In addition, by in frequency domain, carrying out extensive spread spectrum, can increase the frequency diversity effect.
(the 3rd execution mode)
The following describes another execution mode of the transmission signal generation of using the control channel generation method different with the 1st execution mode.In the present embodiment, the traffic channel signal generating unit 4 of the block diagram of Fig. 1 and Fig. 2 is identical with the 1st execution mode.The structure of the control channel signals generating unit 8 of present embodiment as shown in Figure 4.In control channel signals generating unit 8 by S/P conversion 87 with the control channel allocation of symbols in spreading code.Thereafter further carry out the S/P conversion and implement frequency domain spread spectrum (frequency domain spread spectrum handles 90), it is multiplexed to carry out code by MUX89., multiply by unit intrinsic scrambler (scrambling 83), implement inverse fast fourier transform and handle (IFFT processing) 84 thereafter.Further, be transformed to after the timing signal sequence, give protection at interval by Add GI86 by P/S conversion 85.
The 3rd execution mode can be regarded as the compromise method of the 1st execution mode and the 2nd execution mode.If number of sub increases, then in number of sub and the 2nd execution mode that the spread spectrum rate equates, the structure complexity that becomes.Therefore, increasing the spread spectrum rate to a certain extent is effective with equalization effect and the diversity that obtains to disturb, the method that has suppressed the 3rd execution mode of complexity simultaneously again.
(the 4th execution mode)
In Fig. 1 for the purpose of simplifying the description, fully separately described generating the traffic channel signal of time domain and the processing of control channel signals, but in Traffic Channel and control channel, use under the situation of same scrambler, after the scrambler multiplying is handled, can implement identical processing.Fig. 5 is the block diagram of the transmitter in the 4th execution mode of the present invention, and Fig. 6 is the block diagram that is used for describing in detail the Traffic Channel control channel signals generating unit shown in Fig. 5.
As shown in Figure 5, traffic channel data and control channel data are respectively by FECEncoder1, and 5 encode, and by Interleaver2,6 implement to interweave, by MOD3, and 7 implement modulation treatment; Traffic channel symbols and control channel symbol are input to Traffic Channel control channel signals generating unit 9.
As shown in Figure 6; in Traffic Channel control channel signals generating unit 9; to implement the traffic channel symbols of S/P conversion 91 and implement to have implemented frequency domain spread spectrum after the S/P conversion 92 and handled 93 the pairing subcarrier component of control channel symbol addition (+94) respectively; multiply by the intrinsic scrambler in unit (scrambling 95) then, implement inverse Fourier transform processing (IFFT processing) 96; be transformed to after the timing signal sequence by P/S conversion 97, give protection at interval by Add GI98.
(the 5th execution mode)
Fig. 7 is the block diagram of the transmitter in the 5th execution mode of the present invention, and Fig. 8 is the block diagram of the Traffic Channel control channel signals generating unit of present embodiment.
As shown in Figure 7, in the transmitter of present embodiment, the control channel data are input in the Traffic Channel control channel signals generating unit 9 with former state.The processing of traffic channel data is identical with above-mentioned the 4th execution mode (Fig. 5), therefore omits its repeat specification.
In the present embodiment, as shown in Figure 8, in Traffic Channel control channel signals generating unit 9, the control channel data are implemented frequency domain spread spectrum and are handled 99 after implementing S/P conversion 92.Here, the control channel data after the enforcement S/P conversion are implemented block code by block code device (Enc), and are modulated as each subcarrier component by modulator (MOD) then.
Above-mentioned block code device (Enc) is the block code device for the input information bits output n bit codeword of k bit.Here, the n approximate number of number of sub N preferably.Suppose that n is that the approximate number of N, the modulation system of each subcarrier are BPSK, then the control channel data are gone here and there-and conversion with the kN/n bit base in S/P conversion 92.
In addition, carry out encoding process, output N bit by the block code device (Enc) that is arranged in parallel.The N bit is implemented the BPSK modulation as subcarrier component respectively, with traffic channel signal by multiplexed (+94).
In addition, in Fig. 8, the processing of traffic channel signal is identical with above-mentioned the 4th execution mode (Fig. 6), therefore omits its repeat specification.
(the 6th execution mode)
Fig. 9 is the block diagram of structure of the receiver of expression the 6th execution mode of the present invention.In the present embodiment, received signal supposition is the signal that is received through wireless communications path by the signal that transmitter sent out shown in the 1st execution mode or the 4th execution mode.
At first, implement regularly to detect and channel estimating, try to achieve timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing by detections/channel estimation process 11 regularly.According to the weight coefficient of being taken advantage of on each subcarrier after this channel estimation value decision FFT.Here, the conjugate complex number of the corresponding communication path gain of the frequency component of each subcarrier of weight coefficient employing and communication path, but the determining method of weight coefficient is not limited to this method.When in addition, channel estimation value also is used for generating duplicating of control channel signals in control channel signals remover portion.
Received signal is removed protection at interval by Remove GI12, temporarily is saved in the memory 13, implements the control channel demodulation earlier.Because control channel has been implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilize the conjugate complex number of employed spreading code in the spread spectrum and implement contrary spread processing 15 by the weight coefficient that timing detection/channel estimation process 11 is tried to achieve.Here implement S/P conversion 151, FFT processing 152, descrambling 153, the contrary spread spectrum 154 of frequency domain, P/S conversion 155.
In addition, after contrary spread processing, by demodulator (Demod) 16, deinterleaver (Deinterleaver) 17, decoder (Decoder) 18 controlled channel datas.
In addition, after contrary spread spectrum, carry out sign determination by Decision19, utilize control channel signals remover portion to generate duplicating of control channel signals, remove the control channel signals component in the received signal in control channel signals remover portion 14 from be kept at memory 13, carry out the OFDM demodulation process 20 of Traffic Channel.Here implement S/P conversion 201, FFT processing 202, descrambling 203, P/S conversion 204.In addition, in demodulator (Demod) 21, deinterleaver (Deinterleaver) 22, decoder (Decoder) 23, carry out error correction decoding, obtain traffic channel data.
The details of control channel signals remover portion 14 as shown in figure 10.At the control channel symbol of being judged, similarly implement to copy after the S/P conversion 141 with the control channel signals generating unit 8 of Fig. 2, so that the control channel symbol is sent by a plurality of subcarriers, implement frequency domain spread spectrum (frequency domain spread spectrum handles 142) by the spreading code multiplying, and further multiply by the intrinsic scrambler in unit (scrambling 143).Here, after each subcarrier component multiply by the channel estimation value of being tried to achieve by channel estimation unit (channel estimation value multiplying 144) carry out inverse fast fourier transform and handle (IFFT processing) 145, P/S conversion 146, the duplicating of the time signal of controlled channel signal.Deduct this reproducing signals (+147) in the received signal from be kept at memory, obtained removing the received signal of control channel signals.
(the 7th execution mode)
Use time-domain signal to remove among Fig. 9 and Figure 10, but also can be as Figure 11 and in frequency domain, each subcarrier is removed as shown in Figure 12.Figure 11 is the block diagram of structure of the receiver of expression the 7th execution mode of the present invention.
In the present embodiment, implement contrary spread processing 15 to removed protection received signal at interval by Remove GI12.Here, implement S/P conversion 151 and FFT to received signal and handle 152 and be transformed to each subcarrier component, and the signal will implement descrambling 153 time is saved in the memory 13.Control channel signals is carried out sign determination (Decision19) by frequency domain after contrary spread processing 154, the P/S conversion 155 in former state.In control channel signals remover portion 14, in frequency domain, remove control channel signals, handle in Traffic Channel and implement P/S conversion 205 in 20, carry out demodulation by Demod21, by the Deinterleaver22 deinterleaving, by decoder (Decoder) 23 outbound traffic channel data.Then omit its repeat specification for other and Fig. 9 identical functions.
Figure 12 is the figure of details of the control channel signals remover portion 14 of expression Figure 11.Here, carry out S/P conversion 141, implement frequency domain spread spectrum 142 by the spreading code multiplying at the control channel symbol of being judged.In addition, carrying out after channel estimation value multiplying 144 multiply by each subcarrier component by the channel estimation value that regularly detections/channel estimation process 11 is tried to achieve, the signal (remover) during descrambling from be kept at memory 13 deducts the received signal that afterwards (+148) have obtained removing control channel signals.
(the 8th execution mode)
Figure 13 is the block diagram of structure of the receiver of expression the 8th execution mode of the present invention.At first, regularly implementing regularly to detect and channel estimating in the detections/channel estimation process 11, asking for timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing.According to the weight coefficient of being taken advantage of on each subcarrier after this channel estimation value decision FFT.
Received signal is removed protection at interval by Remove GI12, temporarily is saved in the memory 13, implements the demodulation of control channel earlier.Control channel has been implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilizes the conjugate complex number of employed spreading code in the spread spectrum and implements contrary spread processing 15 by the weight coefficient that timing detection/channel estimation process 11 is tried to achieve.Here implement S/P conversion 151, FFT processing 152, descrambling 153, the contrary spread spectrum 154 of frequency domain, P/S conversion 155.
In addition, after contrary spread processing, by demodulator (Demod) 16, deinterleaver (Deinterleaver) 17, decoder (Decoder) 18 controlled channel datas.
In the present embodiment, encode through FEC Encoder24 once more, and interweave the back by the MOD26 modulation, send to control channel signals remover portion 14 then by Interleaver25 by the control channel data that decoder (Decoder) 18 decodings obtain.
Control channel signals remover portion 14 is identical with the block diagram of the Figure 10 that has illustrated, after implementing S/P conversion 141, copy, so that the control channel symbol is sent by a plurality of subcarriers, implement frequency domain spread spectrum (frequency domain spread spectrum handles 142) by the spreading code multiplying, and further multiply by the intrinsic scrambler in unit (scrambling 143).Here, each subcarrier component be multiply by after the channel estimation value of trying to achieve (channel estimation value multiplying 144) and carry out inverse Fourier transform and handle (IFFT processing) 145, P/S conversion 146, the duplicating of the time signal of controlled channel signal by channel estimation unit.Deduct this reproducing signals (+147) in the received signal from be kept at memory, obtained removing the received signal of control channel signals.
In addition, carry out the OFDM demodulation process 20 of Traffic Channel.Here implement S/P conversion 201, FFT processing 202, descrambling 203, P/S conversion 204.In addition, carry out error correction decoding, obtain traffic channel data by demodulator (Demod) 21, deinterleaver (Deinterleaver) 22, decoder (Decoder) 23.
(the 9th execution mode)
Figure 14 is the block diagram of structure of the receiver of expression the 9th execution mode of the present invention.Remove protection received signal at interval by Remove GI12 and be implemented contrary spread processing 15; here; implement S/P conversion 151 and FFT to received signal and handle 152 and be transformed to each subcarrier component, and the signal will implement descrambling 153 time is saved in the memory 13.Control channel signals is directly implemented the contrary spread processing 154 of frequency domain, P/S conversion 155.
In addition, after contrary spread processing, by demodulator (Demod) 16, deinterleaver (Deinterleaver) 17, decoder (Decoder) 18 controlled channel datas.
In the present embodiment, encode through FEC Encoder24 once more by decoder (Decoder) 18 interim decoded control channel data, and interweave the back by the MOD26 modulation, send to control channel signals remover portion 14 then by Interleaver25.
Control channel signals remover portion 14 is identical with the block diagram of the Figure 12 that has illustrated, implements frequency domain spread spectrum by the spreading code multiplying and handle 142 after the control channel symbol after judging is implemented S/P conversion 141.In addition, carrying out after channel estimation value multiplying 144 multiply by each subcarrier component by the channel estimation value that regularly detections/channel estimation process 11 is tried to achieve, (+148) have obtained removing the received signal of control channel signals after removing in the signal (remover) during descrambling from be kept at memory 13.
In addition, handle 20 by Traffic Channel and implement P/S conversion 205, carry out demodulation by Demod21, and carry out deinterleaving, by Decoder23 decoding back outbound traffic channel data by Deinterleaver22.
(the 10th execution mode)
Figure 15 is the block diagram of structure of the receiver of expression the 10th execution mode of the present invention, the embodiment of expression and the corresponding receiver of transmitter of above-mentioned the 5th execution mode.In addition, Figure 16 is the block diagram of the control channel signals remover portion of present embodiment.
As shown in figure 15; in the receiver of present embodiment; removed protection received signal at interval by Remove GI12 and after implementing S/P conversion 151, be transformed to each subcarrier component, and the signal will implement descrambling 153 time is saved in the memory 13 by FFT processing 152.In addition, each subcarrier component is implemented the decoding processing of block codes by passing through decoder (Decoder) 157 after demodulator (Demod) 156 demodulation, by implementing P/S conversion 155 controlled channel datas.
In the structure of Figure 14 of above-mentioned the 9th execution mode, need be the decoding processing that unit carries out error correction coding with the frame, therefore need will be transformed to time series data by the P/S conversion behind each OFDM symbol demodulation and be that unit decodes with the frame; But using the block code of code length smaller or equal to number of sub in the present embodiment, can be that unit carries out decoding processing with the OFDM symbol therefore.Decoded control channel data are sent to control channel signals remover portion 14, remove the control channel signals component in the received signal from be kept at memory 13, and further handle 20 and implement P/S conversion 205 by Traffic Channel, by carrying out deinterleaving by Deinterleaver22 after the Demod21 demodulation, then by Decoder23 decoding back outbound traffic channel data.
As shown in figure 16, in control channel signals remover portion 14, interim decoded control channel decoded data once more by encoder (Enc) 145 codings and by modulator (Mod) 146 at implementing channel estimation value multiplying 144 after each sub-carrier modulation, the duplicating of controlled channel signal.In the signal behind the descrambling from be kept at memory 13 it is deducted (+148) and obtain the remover output signal.
(the 11st execution mode)
Figure 17 is to be the flow chart that extracts traffic channel signal under the situation of information of destination when being judged to be according to resulting control information that Traffic Channel comprises with this base station only.This flow chart is applicable to the block diagram of Figure 13 or the block diagram of Figure 14.Under the situation of Figure 13 and Figure 14, be kept in the memory and be implemented and remove the signal difference of handling, but control flow is identical, judge that according to decoded control information whether comprising with this base station in the Traffic Channel of received frame is the information of destination, only ought comprise therein with this base station be carry out thereafter coding once more/interweave/modulate under the situation of information of destination, control channel is removed, Traffic Channel receives processing.
Here, at first received signal (step S1) is removed protection (step S2) at interval from this received signal.Then, carry out each processing (step S3) such as S/P conversion, FFT, descrambling, and carry out the contrary spread spectrum (step S4) of frequency domain.Further, carry out control channel demodulation, deinterleaving, decoding processing (step S5).Here under the situation of the structure of Figure 13, after step S2 has removed protection at interval, received signal is kept at (step S11) in the memory.In addition, in the structure of Figure 14, after step S3 has carried out descrambling, received signal is saved in (step S12) in the memory.
Then, judge that according to decoded control information whether comprising in the received frame with this base station is the traffic channel data (step S6) of destination.If comprise with this base station is the traffic channel data of destination, then the control channel data is encoded once more, interweaves, modulates (step S7).Then control channel is removed (step S8), carried out the processing (step S9) of Traffic Channel.In addition, be the Traffic Channel of destination if in above-mentioned steps S6, do not comprise with this base station in the received frame, end process (step S10) then.
(the 12nd execution mode)
Figure 18 also is to be the flow chart that extracts traffic channel signal under the situation of information of destination when being judged to be according to resulting control information that Traffic Channel comprises with this base station only.This flow chart is applicable to the block diagram of Figure 13 or the block diagram of Figure 14.Under the situation of Figure 13 and Figure 14, be kept in the memory and be implemented and remove the signal difference of handling, but control flow is identical, judge that according to decoded control information whether comprising with this base station in the Traffic Channel of received frame is the information of destination, only comprising therein with this base station is just to enter under the situation of information of destination nextly to judge.
Here, at first received signal (step S21) is removed protection (step S22) at interval from this received signal.Then, carry out each processing (step S23) such as S/P conversion, FFT, descrambling, and carry out the contrary spread spectrum (step S24) of frequency domain.Further, carry out control channel demodulation, deinterleaving, decoding processing (step S25).Here, under the situation of the structure of Figure 13, after step S22 has removed protection at interval, received signal is saved in (step S32) in the memory.In addition, in the structure of Figure 14, after step S23 carries out descrambling, received signal is saved in (step S33) in the memory.
In addition, judge that whether comprising in the received frame with this base station is the traffic channel data (step S26) of destination, if comprise traffic channel data, then entering next determination module is step S27, if do not comprise then end process (step S31).
Judge in step S27 whether SNR is enough high.That is, even do not remove whether also correct outbound traffic channel data of control channel signals, whether carry out control channel with decision and remove and handle according to the judgements such as modulation/coding parameter that comprised in the communication path state information of measuring by channel estimation unit, the control channel.Under the sufficiently high situation of communication path quality, the processing (step S30) of Traffic Channel is carried out in the processing of omit control channel to encode once more/interweave/modulate, control channel being removed.In this case, the control channel remover will output to the Traffic Channel handling part from the input former state of memory.Under the not high enough situation of communication path quality, carry out that control channel is encoded once more, interweaved, modulation treatment (step S28), and further carry out control channel and remove and handle (step S29), implement Traffic Channel and handle (step S30).
More than described control channel and the multiplexed system that sends of Traffic Channel, in above-mentioned the 1st to the 9th execution mode, by Traffic Channel being replaced into the Traffic Channel 1 that communicates with high-speed data, control channel being replaced into the Traffic Channel 2 that communicates with low speed data, just can realize the execution mode under the multiplexed situation of 2 Traffic Channels that speed is different.
Structure for receiver, suppose by the signal that transmitter sent shown in above-mentioned the 1st execution mode or the 4th execution mode and receive through wireless communications path, but for using the signal of code division multiplexing also can adopt same structure as the above-mentioned the 2nd or the 3rd execution mode in control channel, claim scope of the present invention is not limited to and uses the corresponding receiver of control channel of single code.
In addition, in the accompanying drawing of execution mode, be illustrated with the OFCDM that uses frequency domain spread spectrum, but use the OFCDM that carries out the OFCDM of two-dimensional spread-spectrum or carry out the time domain spread spectrum at time domain and frequency domain obviously also can obtain effect same, the OFCDM that claim scope of the present invention is recorded and narrated is not limited to use the OFCDM of frequency domain spread spectrum.
(the 13rd execution mode)
Figure 19 is the block diagram of the transmitter in the 13rd execution mode of the present invention.In the later accompanying drawing of Figure 19, for giving identical reference symbol with the part that Figure 41 to Figure 45 (existing example) repeats.
In a lot of wireless communication systems, except voice data, image data and other packet datas etc. the business datum that exchanges between user terminal and the distant terminal, the control information that user terminal exchanges with system in order to move in this wireless communication system, the control information that is used for representing the attribute of the business datum that sent are carried out and communicate by letter.
As shown in figure 19, traffic channel data and control channel data are encoded by FECEncoder100,104 respectively among the present invention, and implement to interweave, implement modulation treatment by MOD102,106 by Interleaver101,105, the traffic channel data symbol is transformed to traffic channel signal by traffic channel signal generating unit 103, and the control channel symbol is transformed to control channel signals by control channel signals generating unit 107.These signals directly are added and send.
Figure 20 is the block diagram of the traffic channel signal generating unit and the control channel signals generating unit of the transmitter in the 13rd execution mode of the present invention.
In the traffic channel signal generating unit 103 of Figure 20 (a), traffic channel symbols is copied so that send at frequency domain spread spectrum handling part 201a afterwards at S/P conversion 230a (string-and conversion) by a plurality of subcarriers, multiply by spreading code (C then T0, C T1, C T2, C T3), carry out frequency domain spread spectrum thus and handle., multiply by unit intrinsic scrambler (scrambling), implement inverse fast fourier transform and handle 231a (IFFT processing) thereafter.Further, be transformed to timing signal sequence, give GI240 by Add GI233a by P/S conversion 232a (also-string conversion).
Control channel signals generating unit 107 for Figure 20 (b) also similarly copies the control channel symbol so that send by a plurality of subcarriers after S/P conversion 230b with traffic channel signal generating unit 103, multiply by spreading code (C then C0, C C1, C C2, C C3), carry out frequency domain spread spectrum thus and handle 201b., multiply by unit intrinsic scrambler (scrambling 202b), implement inverse fast fourier transform and handle (IFFT handles 231b) thereafter.Further, 232b is transformed to timing signal sequence by the P/S conversion, gives GI240 by Add GI233b.
Here, Traffic Channel spreading code (C T0, C T1, C T2, C T3) and control channel spreading code (C C0, C C1, C C2, C C3) the mutually non-orthogonal code of use.In addition, in the present embodiment, it is 4 spread spectrum that traffic channel signal and control channel signals are all implemented the spread spectrum rate, but also can implement the mutually different spread spectrum of spread spectrum rate.
(the 14th execution mode)
The following describes the 14th execution mode of the transmission signal generation of using the control channel generation method different with the 13rd execution mode.
The structure of present embodiment and Figure 19 and the 13rd execution mode shown in Figure 20 is identical, but the structure difference of control channel signals generating unit 107.The structure of this part as shown in figure 21.
In control channel signals generating unit 300 shown in Figure 21, the control channel symbol is arrived spreading code by each allocation of symbols by S/P conversion 230b.Each spreading code (C C0, C C1..., C CN-1) to be that code is long be the orthogonal code of N (=number of sub), utilizes this spreading code to carry out the frequency domain spread spectrum 301 (frequency domain spread spectrum processing) of spread spectrum rate for N, it is multiplexed to carry out code by MUX302 thereafter.Multiply by the intrinsic scrambler in unit then and carry out inverse Fourier transform processing (IFFT handles 231b), further, 232b is transformed to timing signal sequence by the P/S conversion, gives GI240 by Add GI233b.
Here, Traffic Channel spreading code (C T0, C T1, C T2, C T3) and control channel spreading code (C C0, C C1..., C CN-1) the mutually non-orthogonal code of use.Wherein, as discussed previously, control channel is mutually orthogonal with spreading code.In addition, only generated 1 Traffic Channel in the above-described embodiment, existed each Traffic Channel under the situation of a plurality of Traffic Channels to use mutually orthogonal code with spreading code.
Compare with the 13rd execution mode, can strengthen the spread spectrum rate in the present embodiment.It is multiplexed to implement code at the spread spectrum rate that increases, so the transmission speed of control channel remains unchanged.Increase the spread spectrum rate by the method for using the 14th execution mode, can make interference equalization from Traffic Channel.In addition, by in frequency domain, carrying out extensive spread spectrum, can increase the frequency diversity effect.
(the 15th execution mode)
The following describes the 15th execution mode of the transmission signal generation of using the control channel generation method different with the 14th execution mode with above-mentioned the 13rd execution mode.Fundamental block diagram shown in the traffic channel signal generating unit of present embodiment and Figure 19 and Figure 20 is identical, but the control channel signals generating unit of Figure 20 adopts different structures.The structure of the control channel signals generating unit 400 of present embodiment as shown in figure 22.In control channel signals generating unit 400 by S/P conversion 230b with the control channel allocation of symbols in spreading code.Thereafter further carry out the S/P conversion and implement frequency domain spread spectrum (frequency domain spread spectrum handles 401), it is multiplexed to carry out code by MUX302., multiply by unit intrinsic scrambler (scrambling), implement inverse fast fourier transform and handle (IFFT handles 231b) thereafter.Further, be transformed to timing signal sequence by P/S conversion 232b and give GI240 by Add GI233b afterwards.
If number of sub increases, then in the 14th execution mode that the spread spectrum rate equates with number of sub, it is complicated that structure becomes.Therefore, sometimes increasing the spread spectrum rate to a certain extent is effective with equalization effect and the diversity that obtains to disturb, the present embodiment that has suppressed complexity simultaneously again.On above-mentioned meaning, present embodiment is the compromise structure of the 13rd execution mode and the 14th execution mode.
(the 16th execution mode)
In Figure 19 for the purpose of simplifying the description, diverse structure is adopted in the processing that generates time domain traffic channel signal and control channel signals, but in Traffic Channel and control channel, use under the situation of same scrambler, after the scrambler multiplying is handled, can implement identical processing.Figure 23 is the block diagram of the transmitter in the 16th execution mode of the present invention, and Figure 24 is the block diagram that is used for describing in detail the Traffic Channel control channel signals generating unit shown in Figure 23.
As shown in figure 23, traffic channel data and control channel data are encoded by FECEncoder100,104 respectively, and are implemented to interweave, implemented modulation treatment by MOD102,106 by Interleaver101,105; Traffic channel symbols and control channel symbol are input to Traffic Channel control channel signals generating unit 500.
As shown in figure 24, in Traffic Channel control channel signals generating unit 500, handle the traffic channel symbols of 201a and implemented after the S/P conversion but also implemented frequency domain spread spectrum and handled the pairing subcarrier component of control channel symbol of 201b having implemented after the S/P conversion to have implemented not only frequency domain spread spectrum respectively by adder calculator 501 additions, multiply by the intrinsic scrambler in unit (scrambling 202b) then, implement inverse Fourier transform processing (IFFT handles 231b), be transformed to after the timing signal sequence by P/S conversion 232b, give GI240 by Add GI233b.
(the 17th execution mode)
Figure 25 is the block diagram of the transmitter of the communication system in the 17th execution mode of the present invention, and Figure 26 is the block diagram of the Traffic Channel control channel signals generating unit of present embodiment.
As shown in figure 25, in the transmitter of present embodiment, the control channel data are input in the Traffic Channel control channel signals generating unit 700 by former state.The processing of traffic channel data is identical with above-mentioned the 16th execution mode (shown in Figure 23), therefore omits its repeat specification.
In the present embodiment, as shown in figure 26, in Traffic Channel control channel signals generating unit 700, traffic channel symbols is implemented frequency domain spread spectrum and is handled 201a after implementing S/P conversion 230a.Here, implement the control channel data of S/P conversion 230b and implement block code by block code device 701 (Enc), modulated by modulator 702 (MOD) then as each subcarrier component.
Above-mentioned block code device 701 (Enc) is the block code device for the input information bits output n bit codeword of k bit.Here, the n approximate number of number of sub N preferably.Suppose that n is that the approximate number of N, the modulation system of each subcarrier are BPSK, then the control channel data are gone here and there-and conversion with the kN/n bit base in the S/P conversion.
In addition, carry out encoding process, output N bit by the block code device 701 (Enc) that is arranged in parallel.The N bit is implemented the BPSK modulation as subcarrier component respectively, by adder calculator 501 and traffic channel signal by multiplexed.
In addition, in Figure 26, the processing of traffic channel signal is identical with above-mentioned the 16th execution mode (with reference to Figure 24), therefore omits its repeat specification.
(the 18th execution mode)
Figure 27 is the block diagram of structure of receiver of the communication system of expression the 18th execution mode of the present invention.Shuo Ming the signal that receiver received supposes it is the signal that is received through wireless communications path by the signal that transmitter sent out shown in the 13rd execution mode or the 16th execution mode in the present embodiment.
At first, implement regularly to detect and channel estimating, try to achieve timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing 921a by detections/channel estimation process 900 regularly.According to the weight coefficient Wi that is taken advantage of on each subcarrier after this channel estimation value decision FFT processing 921a *(i=0,1......N-1).Here, weight coefficient Wi *The conjugate complex number of the corresponding communication path gain of the frequency component of each subcarrier of employing and communication path, but weight coefficient Wi *Determining method be not limited to this method.When in addition, channel estimation value also is used for generating duplicating of control channel signals in control channel signals remover portion 905.
Received signal is removed GI240 by Remove GI901, temporarily is saved in the memory, implements the control channel signals demodulation earlier.In control channel signals handling part 903,, therefore utilize the conjugate complex number (C of employed spreading code in the spread spectrum because control channel signals has been implemented the OFCDM modulation to realize frequency domain spread spectrum * C0, C * C1, C * C2, C * C3) and the weight coefficient Wi that tried to achieve by detection/channel estimation process 900 regularly *Implement the contrary spread processing 923a of frequency domain.Here implement S/P conversion 920a, FFT and handle 921a, descrambling 922a, frequency domain contrary spread processing 923a, P/S conversion 924a.
In addition, after the contrary spread processing 923a of frequency domain, by demodulator 908 (Demod), deinterleaver 909 (Deinterleaver), the controlled channel data of decoder 910 (Decoder).
In addition, after the contrary spread spectrum of frequency domain, carry out sign determination by Decision907, control channel signals remover portion 905 generates duplicating of control channel signals, removes the control channel signals component in the received signal from be kept at memory 904.In traffic channel signal handling part 906, be that the traffic channel signal component has been implemented the OFCDM modulation to realize frequency domain spread spectrum to the signal of having removed the control channel signals component, therefore utilize the conjugate complex number (C of employed spreading code in the spread spectrum * T0, C * T1, C * T2, C * T3) and the weight coefficient Wi that tries to achieve by detection/channel estimation process regularly *Implement the contrary spread processing 923b of frequency domain.Here, implement S/P conversion 920b, FFT and handle 921b, descrambling 922b, frequency domain contrary spread processing 923b, P/S conversion 924b.In addition, carry out error correction decoding, obtain traffic channel data by demodulator 911 (Demod), deinterleaver 912 (Deinterleaver), decoder 913 (Decoder).
Figure 28 is the structure chart of the detailed structure of expression control channel signals remover portion.Utilize Decision907 shown in Figure 27, similarly implement to copy so that the control channel symbol is sent by a plurality of subcarriers, by spreading code (C after the S/P conversion 930 at the control channel signals generating unit 107 of the control channel symbol of being judged and Figure 20 C0, C C1, C C2, C C3) multiplying enforcement frequency domain spread spectrum (frequency domain spread spectrum processing), and further multiply by the intrinsic scrambler in unit (scrambling).Here, each subcarrier component be multiply by after the channel estimation value of trying to achieve (channel estimation value multiplying) and carry out inverse fast fourier transform and handle (IFFT handles 932), P/S conversion 933, the duplicating of the time signal of controlled channel signal by channel estimation unit 900.Utilize in the received signal of adder calculator 934 from be kept at memory and deduct this reproducing signals, obtained removing the received signal of control channel signals.
(the 19th execution mode)
Figure 29 is the block diagram of structure of the receiver of expression the 19th execution mode of the present invention.
In Figure 27 and Figure 28, the time-domain signal that is to use of explanation is removed the execution mode of control channel signals from received signal, but also can be as Figure 29 and in frequency domain each subcarrier is removed as shown in Figure 30.
In the present embodiment, utilize 952 pairs of traffic channel signal handling parts to remove protection received signal at interval and implement the contrary spread processing of frequency by RemoveGI950.Here, implement S/P conversion 970 and FFT to received signal and handle 971 and be transformed to each subcarrier component, and the signal will implement descrambling 972 time is saved in the memory 956.Control channel signals is handled 955 (Decision955) with former state by carrying out sign determination after the contrary spread processing 973 of frequency domain, the P/S conversion 974.In control channel signals remover portion 957, in frequency domain, remove control channel signals.In traffic channel signal handling part 1 (958), after the contrary spread processing 959 of frequency domain, implement P/S conversion 960, carry out demodulation by Demod961, by the Deinterleaver962 deinterleaving, via decoder (Decoder) 962 outbound traffic channel data.Then omit its repeat specification for other and Figure 27 identical functions.
Figure 30 is the block diagram of the details of expression control channel signals remover portion 957 shown in Figure 29.
Here, carry out S/P conversion 980, by spreading code (C at the control channel symbol of being judged C0, C C1, C C2, C C3) multiplying enforcement frequency domain spread spectrum.In addition, carrying out after the channel estimation value multiplying multiply by each subcarrier component by the channel estimation value that regularly detection/channel estimation process is tried to achieve, deducting in the signal (remover) during descrambling from be kept at memory 956 and obtained removing the received signal of control channel signals.
(the 20th execution mode)
Figure 31 is the block diagram of structure of the receiver of expression the 20th execution mode of the present invention.
At first, implement regularly to detect and channel estimating, try to achieve timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing by detections/channel estimation process 1010 regularly.According to this channel estimation value, decision FFT handles the weight coefficient of being taken advantage of on each subcarrier after 1016.
Received signal is removed protection at interval by Remove GI1011, temporarily is saved in the memory 1012, implements the demodulation of control channel earlier.In control channel data-signal handling part 1014, control channel signals is implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilize the conjugate complex number (C of employed spreading code in the spread spectrum * C0, C * C1, C * C2, C * C3) and implement frequency domain against spread processing 1018 by the weight coefficient that detections/channel estimation process 1010 is regularly tried to achieve.Here, implement S/P conversion 1015, FFT processing 1016, descrambling 1017, the contrary spread processing 1018 of frequency domain and P/S conversion 1019.
In addition, after the contrary spread spectrum of frequency, by demodulator (Demod) 1020, deinterleaver (Deinterleaver) 1021, decoder (Decoder) 1022 controlled channel datas.
In the present embodiment, control channel data by decoder (Decoder) 1022 decodings are encoded through FEC Encoder1023 once more, and it is back by the MOD1026 modulation to interweave by Interleaver1025, sends to control channel signals remover portion 1013 then.
Control channel signals remover portion 1013 is identical with the block diagram of the Figure 28 that has illustrated.Here using Figure 28 is illustrated.
At first utilization copies device 931a after implementing S/P conversion 930, b copies so that the control channel symbol is sent by a plurality of subcarriers, by spreading code (C C0, C C1, C C2, C C3) multiplying enforcement frequency domain spread spectrum (frequency domain spread spectrum processing), and further multiply by the intrinsic scrambler in unit (scrambling).Here, each subcarrier component be multiply by (channel estimation value multiplying) after the channel estimation value of trying to achieve by channel estimation unit 1010, carry out inverse Fourier transform and handle (IFFT processing) 932, P/S conversion 933, the duplicating of the time signal of controlled channel signal.Utilize in the received signal of subtraction device 934 from be kept at memory and deduct this reproducing signals, obtained removing the received signal of control channel signals.
In addition, utilize the received signal of 1027 pairs of above-mentioned generations of traffic channel signal handling part to implement the OFCDM demodulation process.Here, implement S/P conversion 1028, FFT processing 1029, descrambling 1030, the contrary spread processing 1031 of frequency domain, P/S conversion 1032.In addition, carry out error correction decoding, can access traffic channel data by demodulator (Demod) 1033, deinterleaver (Deinterleaver) 1034, decoder (Decoder) 1035.
(the 21st execution mode)
Figure 32 is the block diagram of structure of the receiver of expression the 21st execution mode of the present invention.Removed protection received signal at interval by Remove GI1110; implement the contrary spread processing of frequency by control channel signals handling part 1112; here; implement S/P conversion 1113 and FFT to received signal and handle 1114 and be transformed to each subcarrier component, and the signal will implement descrambling 1115 time is saved in the memory 1124.Control channel signals is directly implemented the contrary spread processing 1116 of frequency domain, P/S conversion 1117.
In addition, after control channel data-signal handling part 1112, by demodulator (Demod) 1118, deinterleaver (Deinterleaver) 1119, decoder (Decoder) 1120 controlled channel datas.
In the present embodiment, encode through FEC Encoder1121 once more by decoder (Decoder) 1120 interim decoded control channel data, and it is back by the MOD1123 modulation to interweave by Interleaver1122, sends to control channel signals remover portion 1125 then.
Control channel signals remover portion 1125 is identical with the block diagram of the Figure 30 that has illustrated.Here use Figure 30 to be illustrated.
At by MOD1123 modulated control channel symbol, carry out S/P conversion 980, by spreading code (C C0, C C1, C C2, C C3) processing of multiplying enforcement frequency domain spread spectrum.In addition, carrying out after the channel estimation value multiplying multiply by each subcarrier component by the channel estimation value that regularly detection/channel estimation process is tried to achieve, deducting in the signal (remover) during descrambling from be kept at memory and obtained removing the received signal of control channel signals.
In addition, in Traffic Channel handling part 1126, implement to carry out P/S conversion 1128 after the contrary spread processing 1127 of frequency domain, carry out demodulation by Demod1129, and by the Deinterleaver1130 deinterleaving, by Decoder1131 decoding back outbound traffic channel data.
(the 22nd execution mode)
Figure 33 is the block diagram of structure of the receiver of expression the 22nd execution mode of the present invention, is expression and the block diagram of the structure of the corresponding receiver of transmitter of above-mentioned the 17th execution mode.In addition, Figure 34 is the block diagram of the control channel signals remover portion of present embodiment.
As shown in figure 33; in the receiver of present embodiment; removed protection received signal at interval after control channel data-signal handling part 1212 has been implemented S/P conversion 1213 by Remove GI1210; handle 1214 by FFT and be transformed to each subcarrier component, and the signal will implement descrambling 1215 time is saved in the memory 1217.In addition, each subcarrier component by after demodulator (Demod) demodulation, is implemented the decoding processing of block code by decoder (Decoder), by implementing P/S conversion 1216 controlled channel datas.
In the structure of above-mentioned the 21st execution mode shown in Figure 32, owing to be the decoding processing that unit carries out error correction coding, therefore need be after be transformed to time series data by the P/S conversion and be that unit decodes with the frame with each OFDM symbol demodulation with the frame; But using the block code of code length smaller or equal to number of sub in the present embodiment, can be that unit carries out decoding processing with the OFDM symbol therefore.Decoded control channel data are sent to control channel signals remover portion 1218, remove the control channel signals component in the received signal from be kept at memory 1217, and further by after the contrary spread processing 1220 of Traffic Channel processing 1219 enforcement frequency domains, implement P/S conversion 1221, by passing through the Deinterleaver1223 deinterleaving after the Demod1222 demodulation, then by obtaining traffic channel data after the Decoder1224 decoding.
As shown in figure 34, in control channel signals remover portion 1218, interim decoded control channel decoded data once more by encoder (Enc) 1225 codings and by modulator (Mod) 1226 at implementing the channel estimation value multiplying after each sub-carrier modulation, the duplicating of controlled channel signal.In the signal behind the descrambling from be kept at memory 1217 it is deducted and obtain the remover output signal.
(the 23rd execution mode)
Figure 35 is the block diagram of the control channel signals generating unit and the traffic channel signal generating unit of the transmitter in the 23rd execution mode.
Present embodiment is the formation that has increased the orthogonal code generating unit 108 of the feature of representing present embodiment in the control channel signals generating unit 103 of the 13rd execution mode and traffic channel signal generating unit 107.Present embodiment is except possessing spreading code (code) handoff functionality, and is identical with the structure of the 13rd execution mode.Certainly, under the situation of the 13rd execution mode, also there is the code generating unit, but, therefore omits its explanation because it has only used control channel signals and the non-orthogonal code of traffic channel signal.
The control channel signals generating unit 103 of Figure 35 is identical with the structure of the 13rd execution mode with traffic channel signal generating unit 107, therefore omits its explanation.Orthogonal code generating unit 108 is made of the code switch 111 of the orthogonal code maker 1 (109) that generates a plurality of orthogonal codes, orthogonal code maker 2 (110) and switching orthogonal code maker 1 (109) and orthogonal code maker 2 (110).Wherein, code that is generated by orthogonal code maker 1 (109) and the code that generated by orthogonal code maker 2 (110) are mutually non-orthogonal.
The code that uses in the traffic channel signal only uses the code that is generated by orthogonal code maker 1 (109).In addition, the code that uses in the control channel signals is under the good situation of communication path quality, use the code that generates by orthogonal code maker 2 (110) by code switch 111 being switched to orthogonal code maker 2 (110) one sides, and under the inferior situation of communication path quality, then use the code that generates by orthogonal code maker 1 (109) by code switch 111 being switched to orthogonal code maker 1 (109) one side.If there are a plurality of channels in control channel or Traffic Channel, then can be according to for example selecting orthogonal code, non-orthogonal codes via the channel of the poorest communication path, perhaps also can judge according to mean value of a plurality of channels level of quality (levels) separately etc.
Above quality according to communication path is judged quadrature, nonopiate, but also can be enough to be used as under the state of the code that uses in the control channel signals, use the code that is generated by orthogonal code maker 1 (109) at the code that is generated by orthogonal code maker 1 (109); If not enough, then code switch 111 switched to orthogonal code maker 2 (110) one sides, thereby use the code that is generated by orthogonal code maker 2 (110).Wherein, if use non-orthogonal codes in this case, compare quality of reception meeting variation with the situation of use orthogonal code, therefore comparing with the situation of using orthogonal code needs suitable raising transmission level (level) to send.
Further, have only control channel signals between orthogonal code maker 1 (109) and 2 (110), to switch in the present embodiment, have only traffic channel signal or to adopt control channel signals and structure that the traffic channel signal both can be switched between orthogonal code maker 1 (109) and orthogonal code maker 2 (110) in the structure of switching between orthogonal code maker 1 and 2 but also can adopt.For example, this is effectively under the situation of wishing the fixed control channel code.
By means of with upper type, can distribute optimal code according to the quality of communication path and the code number that is using.
(the 24th execution mode)
Figure 36 is the block diagram of structure of the receiver of expression the 24th execution mode of the present invention.
In the present embodiment, suppose that the signal that is received is the signal that is received through wireless communications path by the signal of being put down in writing in the 24th execution mode (with reference to Figure 35) that transmitter sent.In addition, the structure of the receiver that represented in the present embodiment is when being used for receiving following signal, promptly as the spreading code of control channel signals, under the good situation of communication path quality, use the non-orthogonal code of employed spreading code in the relative traffic channel signal and signal during code at the next use quadrature of the inferior situation of communication path quality.Therefore, particularly do not possess above-mentioned control channel signals remover portion in the receiver of its structure.
At first, implement regularly to detect and channel estimating, try to achieve timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing 1330 by detections/channel estimation process 1300 regularly.Received signal is removed protection at interval by Remove GI1310, implements S/P conversion 1320, FFT processing 1330 then.Thereafter, control channel and Traffic Channel are implemented to detect by control channel data-signal handling part (2) (1340) and business datum signal processing part (2) (1360) respectively and are handled.
Control channel signals is implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilizes the conjugate complex number (C of employed spreading code in the spread spectrum * C0, C * C1, C * C2, C * C3) and implement frequency against spread processing by the weight coefficient that detections/channel estimation process is regularly tried to achieve.Here implement descrambling, the contrary spread spectrum of frequency domain, P/S conversion.Here, the conjugate complex number (C of employed spreading code in the spread spectrum * C0, C * C1, C * C2, C * C3) export by the code switch.The code switch carries out at the code of control channel utilization and Traffic Channel quadrature switching to orthogonal code maker 1 under the situation of spread spectrum, and is utilizing non-orthogonal code to carry out the next orthogonal code maker 2 that switches to of situation of spread spectrum.After the contrary spread processing of frequency, by demodulator (Demod) 1361, deinterleaver (Deinterleaver) 1362, decoder (Decoder) 1363 controlled channel datas.
In addition, traffic channel signal is similarly implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilizes the conjugate complex number (C of employed spreading code in the spread spectrum * T0, C * T1, C * T2, C * T3) and implement frequency domain against spread processing by the weight coefficient that detections/channel estimation process is regularly tried to achieve.Here, implement descrambling, the contrary spread spectrum of frequency domain, P/S conversion.Here, the conjugate complex number (C of employed spreading code in the spread spectrum * T0, C * T1, C * T2, C * T3) by 1 output of orthogonal code maker.After the contrary spread processing of frequency domain, obtain traffic channel data by demodulator (Demod) 1364, deinterleaver (Deinterleaver) 1365, decoder (Decoder) 1366.
In the structure of above-mentioned receiver,, then also can adopt identical structure for descrambling if descrambling code is identical in control channel and Traffic Channel.
(the 25th execution mode)
Figure 37 is the block diagram of structure of the receiver of expression the 25th execution mode of the present invention.
In the present embodiment, suppose that received signal is the signal that is received through wireless communications path by the signal that transmitter sent that the 24th execution mode (with reference to Figure 35) is recorded and narrated.In addition, different with the 24th execution mode, the structure of Cai Yonging is to possess remover in the receiver in the present embodiment.Thus, even the spreading code of control channel is the non-orthogonal code of spreading code of relative Traffic Channel,, therefore can realize the reception that quality is good owing to after can from received signal, removing control channel signals by remover traffic channel signal is carried out demodulation.
At first, implement regularly to detect and channel estimating, try to achieve timing and channel estimation value that intercepting is used to carry out the received signal of FFT processing by detections/channel estimation process 1400 regularly.According to the weight coefficient of being taken advantage of on each subcarrier after this channel estimation value decision FFT processing.
Received signal is removed protection at interval by Remove GI1410, temporarily is saved in the memory 1420, implements the detection of control channel signals earlier by control channel data-signal handling part 1430.Because control channel signals is implemented the OFCDM modulation to realize frequency domain spread spectrum, therefore utilizes the conjugate complex number (C of employed spreading code in the spread spectrum * C0, C * C1, C * C2, C * C3) and implement against spread processing by the weight coefficient that detections/channel estimation process is regularly tried to achieve.Here, implement S/P conversion, FFT processing, descrambling, the contrary spread spectrum of frequency domain, P/S conversion.Here, orthogonal code generating unit 1440 is identical with the 24th execution mode, the conjugate complex number (C of employed spreading code in the spread spectrum * C0, C * C1, C * C2, C * C3) export by the code switch.After implementing contrary spread processing, by demodulator (Demod) 1441, deinterleaver (Deinterleaver) 1442, decoder (Decoder) 1443 controlled channel datas by control channel signals handling part 1430.
Detection by the performed Traffic Channel of traffic channel signal handling part 1448 is described below.If the spreading code of the control channel that is received is the code of the spreading code quadrature of relative Traffic Channel, then control channel remover portion 1447 will output to traffic channel signal handling part 1448 from the input former state of memory 1420, implement the detection (demodulation) of Traffic Channel thus and not carry out the removing of control channel.That is, the OFCDM demodulation process of execution Traffic Channel.Here, implement S/P conversion, FFT processing, descrambling, the contrary spread spectrum of frequency domain, P/S conversion.In addition, carry out error correction decoding, obtain traffic channel data by demodulator (Demod), deinterleaver (Deinterleaver), decoder (Decoder).
If the spreading code of received control channel is the non-orthogonal code of the spreading code of relative Traffic Channel, then removes control channel signals among the received signal and carry out the demodulation of Traffic Channel.
That is decoded control channel data are encoded through FEC Encoder1444 once more, and interweave the back by the MOD1446 modulation by Interleaver1445, are sent to control channel signals remover portion 1447 then.Control channel signals remover portion 1447 is identical with the block diagram of the Figure 28 that has illustrated, copies after implementing the S/P conversion, so that the control channel symbol is sent by a plurality of subcarriers, by spreading code (C C0, C C1, C C2, C C3) multiplying enforcement frequency domain spread spectrum (frequency domain spread spectrum handles 1), and further multiply by the intrinsic scrambler in unit (scrambling).Here, each subcarrier component be multiply by (channel estimation value multiplying) after the channel estimation value of trying to achieve, carry out inverse Fourier transform and handle (IFFT processing), P/S conversion, the duplicating of the time signal of controlled channel signal by channel estimation unit.Deduct this reproducing signals in the received signal from be kept at memory, obtained removing the received signal (traffic channel signal) of control channel signals.
In addition, as mentioned above,, obtain traffic channel data from above-mentioned received signal by carrying out the demodulation process of Traffic Channel.
In the present embodiment,, go out control channel signals, but also can reproduce control channel signals according to the control channel symbol before the Demod1441 according to the control channel data reproduction as the sweep-out method of control channel signals.In addition, in the present embodiment, carry out in the time domain before S/P and remove, but also can in the frequency domain after FFT handles, carry out removing at each subcarrier.
Below, use the action of the receiver (with reference to the block diagram of Figure 31, Figure 32) in flowchart text shown in Figure 38 the above-mentioned the 20th and the 21st execution mode.
Figure 38 is expression when being judged to be according to resulting control information that Traffic Channel comprises with this base station is the flow chart that the extraction of traffic channel signal under the situation of information of destination is handled.
Under the situation of the situation of Figure 31 and Figure 32, be kept in the memory (1012 or 1124) and be implemented and remove the signal difference of handling, but control flow is identical.That is, judge that according to decoded control information whether comprising with this base station in the Traffic Channel of received frame is the information of destination, only comprise therein with this base station be carry out thereafter coding once more/interweave/modulate under the situation of information of destination, control channel is removed, Traffic Channel receives processing.
Here, at first received signal (step S0) utilizes Remove GI to remove protection at interval from this received signal.Then, carry out each processing (step S2) such as S/P conversion, FFT processing, descrambling, and carry out the contrary spread processing (step S3) of frequency domain.Further, carry out control channel demodulation, deinterleaving, decoding processing (step S4).Here, in the receiving system of structure shown in Figure 31, after having removed protection at interval, received signal is saved in the memory 1012.In addition, in the receiving system of structure shown in Figure 32, after carrying out descrambling 1115, received signal is saved in the memory 1124.
Then, judge that according to decoded control channel information whether comprising with this base station in the frame that is received is the traffic channel data (step S5) of destination.If comprising with this base station is the traffic channel data (step S5:YES) of destination, then the control channel data are encoded once more, interweave, modulate (step S6).Then control channel is removed, carried out the processing (step S8) of Traffic Channel.In addition, be the Traffic Channel (step S5:NO) of destination, then end process if do not comprise in the frame that receives with this base station.
Then, use below in the action of the receiver (with reference to the block diagram of Figure 31, Figure 32) of flowchart text in the above-mentioned the 20th and the 21st execution mode shown in Figure 39, whether implement action under the situation that control channel removes according to the SN ratio in judgement.
Figure 39 also is to be the flow chart that extracts traffic channel signal under the situation of information of destination when being judged to be according to resulting control channel information that Traffic Channel comprises with this base station only.Under the situation of Figure 31 and Figure 32, be kept in the memory and be implemented and remove the signal difference of handling, but control flow is identical, judge that according to decoded control information whether comprising with this base station in the Traffic Channel of received frame is the information of destination, only comprising therein with this base station is just to enter under the situation of information of destination nextly to judge.
Here, at first received signal (step S10) is removed protection (step S11) at interval from this received signal.Then, carry out each processing (step S12) such as S/P conversion, FFT, descrambling, and carry out the contrary spread spectrum (step S13) of frequency domain.Further, carry out control channel demodulation, deinterleaving, decoding processing (step S14).Here, identical with above-mentioned flow process shown in Figure 38, under the situation of the structure of Figure 31, after removing protection at interval, received signal is saved in the memory.In addition, in the structure of Figure 32, received signal is saved in the memory after carrying out descrambling.
In addition, judge that whether comprising in the received frame with this base station is the traffic channel data of destination, if do not comprise traffic channel data then end process.
If comprise traffic channel data then judge SNR whether enough high (step S16).That is, even do not remove whether also correct outbound traffic channel data of control channel signals, whether carry out control channel with decision and remove and handle according to the judgements such as modulation/coding parameter that comprised in the communication path state information of measuring by channel estimation unit, the control channel.Under the sufficiently high situation of communication path quality (step S16:YES), the processing (step S19) of Traffic Channel is carried out in the processing of omit control channel to encode once more/interweave/modulate, control channel being removed.In this case, control channel remover portion will output to the Traffic Channel handling part from the input former state of memory.Under the not high enough situation of communication path quality (step S16:NO), carry out that control channel is encoded once more, interweaved, modulation treatment (step S17), and further carry out the processing (step S18) that control channel is removed, implement Traffic Channel and handle (step S19).
Below, use is used for receiving motion flow shown in Figure 40 the receiving system shown in Figure 37 of the signal that sends out from the transmitter shown in the 23rd execution mode, illustrates to distinguish according to the quality of communication path to use control channel with the situation of the relative Traffic Channel of spreading code with the code of spreading code quadrature and non-orthogonal code.
In addition, identical with Figure 38, Figure 39, Figure 40 is to be the flow chart that extracts traffic channel signal under the situation of information of destination when being judged to be according to resulting control information that Traffic Channel comprises with this base station only.
At first, received signal (step S20) is removed protection (step S21) at interval from this received signal.Here, having removed protection signal at interval is saved in the memory.Then, carry out each processing such as S/P conversion, FFT, descrambling, and carry out the contrary spread spectrum (step S23) of frequency domain.Here, if the spreading code quadrature of the relative Traffic Channel of spreading code of control channel then utilizes by the contrary spread spectrum of the code implementation of orthogonal code maker 1 output, if non-orthogonal then utilize by the contrary spread spectrum of the code implementation of orthogonal code maker 2 outputs.Carry out control channel demodulation, deinterleaving, decoding processing (step S24) thereafter.
In addition, judge that whether comprising in the received frame with this base station is the traffic channel data (step S25) of destination, if do not comprise traffic channel data then end process (step S25:NO).If comprise traffic channel data (step S25:YES) then enter next procedure, judge that the spreading code of control channel signals is the code or the non-orthogonal code (step S26) of the spreading code quadrature of relative Traffic Channel.
If the code of quadrature (step S26), whether enough (step S26:YES) judge SNR high (step S27) under the situation of using orthogonal code.That is, under the situation of having used orthogonal code (step S26:YES), even do not remove whether yet correct outbound traffic channel data of control channel signals according to the judgements such as modulation/coding parameter that comprised in the communication path state information of measuring by channel estimation unit, the control channel, whether carry out control channel with decision and remove.Particularly, judge that whether the SNR value measured is greater than the threshold value T that is used for judging the SNR that whether removes control channel under the situation of having used orthogonal code Orthogonal, if greater than occasion (step S27:YES) then omit control channel and encode once more/interweave/modulate, processing that control channel is removed, carry out the processing of Traffic Channel.In this case, control channel remover portion will output to the Traffic Channel handling part from the input former state of memory.If the occasion that is not more than (step S27:NO), carry out then that control channel is encoded once more, interweaved, modulation treatment, and further carry out the processing that control channel is removed, implement Traffic Channel and handle.
If whether enough non-orthogonal code (step S26:NO) under the situation of having used non-orthogonal codes, judges SNR high (step S28).That is, under the situation of having used non-orthogonal codes, even do not remove whether yet correct outbound traffic channel data of control channel signals according to the judgements such as modulation/coding parameter that comprised in the communication path state information of measuring by channel estimation unit, the control channel, whether carry out control channel with decision and remove.Particularly, judge that whether the SNR value measured is greater than the threshold value T that is used for judging the SNR that whether removes control channel under the situation of having used non-orthogonal codes Non-orthogonal, if greater than occasion (step S28:YES) then omit control channel and encode once more/interweave/modulate, processing that control channel is removed, carry out the processing of Traffic Channel.In this case, control channel remover portion will output to the Traffic Channel handling part from the input former state of memory.If the occasion that is not more than (step S28:NO), carry out then that control channel is encoded once more, interweaved, modulation treatment, and further carry out the processing that control channel is removed, implement Traffic Channel and handle.
Usually under the situation of having used non-orthogonal codes, the quality of reception is poorer than the situation of using orthogonal code, therefore need be with above-mentioned threshold value T Non-orthogonalBe set at greater than threshold value T Orthogonal
By using the method for present embodiment, can implement to be suitable for most the reception of communication path quality according to quadrature, non-orthogonal codes.
Above-mentioned with control channel and the multiplexed system that sends of Traffic Channel in, the control channel spread spectrum codes C CWith the Traffic Channel spread spectrum codes C TAdopt different codes.But, C CAnd C TAlso can be identical, in this case as long as scrambler is different.For example, as the 1st kind of method, the method for using the intrinsic control channel in unit to use scrambler with the intrinsic Traffic Channel of scrambler and unit is arranged.As the 2nd kind of method, there is the control channel that uses units shared to use the method for scrambler with the intrinsic Traffic Channel of scrambler and unit.With under the situation of scrambler, can use control channel to come discrimination unit at the control channel that has used units shared with spreading code.
More than described control channel and the multiplexed system that sends of Traffic Channel, in above-mentioned the 13rd to the 25th execution mode, by Traffic Channel being replaced into the Traffic Channel 1 that communicates with high-speed data, control channel being replaced into the Traffic Channel 2 that communicates with low speed data, can realize the execution mode under the multiplexed situation of 2 Traffic Channels that speed is different.
In the structure of receiver, though supposition is the signal that receives through wireless communications path by the signal that transmitter sent out shown in above-mentioned the 13rd, the 16th or the 23rd execution mode, but for using the signal of code division multiplexing also can adopt same structure as the above-mentioned the 14th or the 15th execution mode in control channel, claim scope of the present invention is not limited to and uses the corresponding receiver of control channel of single code.
In addition, shown in employed accompanying drawing in the explanation of above-mentioned execution mode, control channel signals, traffic channel signal all use the OFCDM that implements frequency domain spread spectrum to describe, but use the OFCDM that carries out the OFCDM of two-dimensional spread-spectrum or carry out the time domain spread spectrum at time domain and frequency domain obviously also can obtain effect same, be not limited to use the OFCDM of frequency domain spread spectrum.
Industrial usability
As mentioned above, data communication system of the present invention, dispensing device and receiving system can be used Send simultaneously the wireless communication system of high-speed data communication and low speed data or control data, Effective utilization of frequency and multiplexed flexibility raising aspect excellent performance.

Claims (57)

1. a communication system is the communication system of a kind of use OFDM (OFDM) technology, it is characterized in that: comprise be used for service data transmission Traffic Channel and be used for the control channel of transmitting control data; By utilizing the traffic channel signal that OFDM modulation generates and utilizing the multiplexed transmission signal that generates of control channel signals that generates at any one all non-orthogonal signal of time, frequency, code with respect to above-mentioned traffic channel signal.
2. communication system as claimed in claim 1 is characterized in that, above-mentioned control channel signals is to spread to a plurality of subcarriers of the traffic channel signal after above-mentioned OFDM modulation or the signal in a plurality of OFDM symbol or this two territories.
3. communication system as claimed in claim 1 is characterized in that, above-mentioned control channel signals is to utilize low speed packet sign indicating number encoded signals, and this code word is a kind of signal that a plurality of subcarriers of utilizing single OFDM symbol send that constitutes.
4. communication system as claimed in claim 1, it is characterized in that, receiving base station one side, receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, according to judging that by carrying out signaling point behind the above-mentioned control channel of demodulation resulting receiving symbol generates duplicating of the control channel signals that is multiplexed to received signal, from received signal, remove the demodulation of carrying out above-mentioned Traffic Channel after the control channel signals component.
5. communication system as claimed in claim 1, it is characterized in that, the data of above-mentioned control channel have been implemented error correction coding, receiving base station one side, receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, according to duplicating of the control channel signals that is multiplexed to received signal by the resulting control channel data generation of the above-mentioned control channel of demodulate/decode, from received signal, remove the demodulation process that the control channel signals component is carried out above-mentioned Traffic Channel afterwards.
6. communication system as claimed in claim 1, it is characterized in that, the data of above-mentioned control channel have been implemented error correction coding, and the target address information of the above-mentioned Traffic Channel that comprised at that time in the data of above-mentioned control channel or after this sent, receiving base station one side, receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, the above-mentioned control channel of demodulate/decode extracts the control channel data, judged that whether comprising in the above-mentioned Traffic Channel with this base station was the information of destination according to past or resulting at that time control information, when above-mentioned Traffic Channel comprises with this base station is under the situation of information of destination, generate duplicating of the control channel signals that is multiplexed to received signal according to above extracted control channel data, from received signal, remove the demodulation process of carrying out above-mentioned Traffic Channel after the control channel signals component.
7. a communication system is the communication system of a kind of use OFDM (OFDM) technology, it is characterized in that: comprise be used for the transmitting high speed business datum Traffic Channel 1 and be used for transmitting the Traffic Channel 2 of low-speed service data; Signal by will utilizing the Traffic Channel 1 that OFDM modulation generates and utilize the multiplexed transmission signal that generates of signal of the Traffic Channel 2 that generates at any one all non-orthogonal signal of time, frequency, code with respect to the signal of above-mentioned Traffic Channel 1.
8. communication system as claimed in claim 7 is characterized in that, the signal of above-mentioned Traffic Channel 2 is to spread to a plurality of subcarriers of signal of the Traffic Channel 1 after above-mentioned OFDM modulation or the signal in a plurality of OFDM symbol or this two territories.
9. communication system as claimed in claim 7 is characterized in that, the signal of above-mentioned Traffic Channel 2 is to utilize low speed packet sign indicating number encoded signals, and this code word is a kind of signal that a plurality of subcarriers of utilizing single OFDM symbol send that constitutes.
10. communication system as claimed in claim 7, it is characterized in that, receiving base station one side, receive above-mentioned Traffic Channel 1 and above-mentioned Traffic Channel 2 by multiplexed signal, according to judging that by carrying out signaling point after the above-mentioned Traffic Channel 2 of demodulation the symbol of resulting Traffic Channel 2 generates the duplicating of signal of the above-mentioned Traffic Channel 2 be multiplexed to received signal, from received signal, remove the demodulation process of carrying out above-mentioned Traffic Channel 1 after the signal component of above-mentioned Traffic Channel 2.
11. communication system as claimed in claim 7, it is characterized in that, the data of above-mentioned Traffic Channel 2 have been implemented error correction coding, receiving base station one side, receive above-mentioned Traffic Channel 1 and above-mentioned Traffic Channel 2 by multiplexed signal, generate the duplicating of signal of the above-mentioned Traffic Channel 2 that is multiplexed to received signal according to the data by the above-mentioned Traffic Channel 2 resulting Traffic Channels 2 of demodulate/decode, from received signal, remove the demodulation of carrying out above-mentioned Traffic Channel 1 after the signal component of above-mentioned Traffic Channel 2.
12. a dispensing device is the dispensing device of a kind of use OFDM (OFDM) modulation, it is characterized in that having: traffic channel data is carried out the unit that OFDM modulation back generates traffic channel signal; Utilization generates the unit of control channel signals with respect to above-mentioned traffic channel signal any one all non-orthogonal signal at time, frequency, code according to the control channel data; By with the multiplexed unit that sends signal that generates of above-mentioned traffic channel signal and above-mentioned control channel signals.
13. dispensing device as claimed in claim 12, it is characterized in that above-mentioned control channel signals generation unit comprises and will be used for the control channel symbols spread of transmitting control channel data to a plurality of subcarriers of the traffic channel signal after above-mentioned OFDM modulation or the unit in a plurality of OFDM symbol or this two territories.
14. dispensing device as claimed in claim 12 is characterized in that, above-mentioned control channel signals generation unit comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
15. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 12, it is characterized in that having: according to judging that by carrying out signaling point behind the above-mentioned control channel of demodulation resulting receiving symbol generates the unit that duplicates of the above-mentioned control channel signals that is multiplexed to received signal; From received signal, remove the unit of control channel signals component.
16. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 12, it is characterized in that, the data of above-mentioned control channel have been implemented error correction coding, have according to the unit that duplicates that generates the above-mentioned control channel signals that is multiplexed to received signal by the resulting control channel data of the above-mentioned control channel of demodulate/decode; From received signal, remove the unit of control channel signals component.
17. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 12, it is characterized in that, the data of above-mentioned control channel have been implemented error correction coding, have and to extract the unit of control channel data after the above-mentioned control channel demodulate/decode, judged that whether comprising in the above-mentioned Traffic Channel with this base station was the information of destination according to past or resulting at that time control information, when above-mentioned Traffic Channel comprises with this base station is under the situation of information of destination, generate duplicating of the above-mentioned control channel signals that is multiplexed to received signal according to above extracted control channel data, from received signal, remove the demodulation process of carrying out above-mentioned Traffic Channel after the control channel signals component.
18. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 12, it is characterized in that, have: receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, according to the above-mentioned control channel of demodulation and judge that resulting control channel symbol generates the duplicating of above-mentioned control channel, removes the elimination function 1 of above-mentioned control channel signals component from received signal; Receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, generate the elimination function 2 of duplicating, from received signal, remove the control channel signals component of the above-mentioned control channel that is multiplexed to received signal according to the resulting control channel data of the above-mentioned control channel of demodulate/decode; Select above-mentioned elimination function 1, above-mentioned elimination function 2 and do not have any one that eliminate among this three and carry out the demodulation process of above-mentioned Traffic Channel according to the quality of communication path.
19. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 12, it is characterized in that, only have following two any one that remove among the functions and remove function: receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, according to the above-mentioned control channel of demodulation and judge that resulting control channel symbol generates the elimination function 1 of duplicating, remove above-mentioned control channel signals component from received signal of the above-mentioned control channel signals that is multiplexed to received signal; Receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, generate the elimination function 2 of duplicating, from received signal, remove the control channel signals component of the above-mentioned control channel that is multiplexed to received signal according to the resulting control channel data of the above-mentioned control channel of demodulate/decode; According to the quality of communication path select to have eliminate and do not have among the elimination any one carry out the demodulation of above-mentioned Traffic Channel.
20. a dispensing device is the dispensing device of a kind of use OFDM (OFDM) modulation, it is characterized in that having: the data of Traffic Channel 1 are carried out the unit that OFDM modulation back generates the signal of Traffic Channel 1; Utilization generates the unit of the signal of Traffic Channel 2 at any one all non-orthogonal signal of time, frequency, code with respect to the signal of above-mentioned Traffic Channel 1; By with the multiplexed unit that sends signal that generates of the signal of the signal of above-mentioned Traffic Channel 1 and above-mentioned Traffic Channel 2.
21. dispensing device as claimed in claim 20, it is characterized in that the signal generation unit of above-mentioned Traffic Channel 2 comprises and will be used for sending the symbols spread of Traffic Channel 2 to a plurality of subcarriers of the signal of the Traffic Channel 1 after above-mentioned OFDM modulation or the unit in a plurality of OFDM symbol or these two territories.
22. dispensing device as claimed in claim 20, it is characterized in that the signal generation unit of above-mentioned Traffic Channel 2 comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
23. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 20, it is characterized in that having: according to judging that by carrying out signaling point behind the above-mentioned control channel 2 of demodulation the symbol of resulting Traffic Channel 2 generates the unit that duplicates of the signal of the above-mentioned Traffic Channel 2 that is multiplexed to received signal; From received signal, remove the unit of the signal component of above-mentioned Traffic Channel 2.
24. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 20, it is characterized in that, the data of above-mentioned Traffic Channel 2 have been implemented error correction coding, have: according to the unit that duplicates that generates the signal of the above-mentioned Traffic Channel 2 that is multiplexed to received signal by the data of the above-mentioned Traffic Channel 2 resulting Traffic Channels 2 of demodulate/decode; From received signal, remove the unit of the signal component of above-mentioned Traffic Channel 2.
25. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 20, it is characterized in that having: according to the elimination function 1 of duplicating, from received signal, remove the signal component of above-mentioned Traffic Channel 2 of the signal that generates the above-mentioned Traffic Channel 2 that is multiplexed to received signal by the symbol of judging resulting Traffic Channel 2 after the above-mentioned Traffic Channel 2 of demodulation; Generate the duplicating of signal of the above-mentioned Traffic Channel 2 that is multiplexed to received signal according to the data by the above-mentioned Traffic Channel 2 resulting Traffic Channels 2 of demodulate/decode, from received signal, remove the elimination function 2 of the signal component of above-mentioned Traffic Channel 2; According to the quality of communication path, select above-mentioned elimination function 1, above-mentioned elimination function 2 and do not have the demodulation of eliminating any one among this three and carrying out above-mentioned Traffic Channel 1.
26. receiving system, it is a kind of receiving system that is used for receiving the signal that sends out by the described dispensing device of claim 20, it is characterized in that only having following two any one that remove among the functions and remove function: according to the elimination function 1 of duplicating, from received signal, remove the signal component of above-mentioned Traffic Channel 2 of the signal that generates the above-mentioned Traffic Channel 2 that is multiplexed to received signal by the symbol of judging resulting Traffic Channel 2 after the above-mentioned Traffic Channel 2 of demodulation; Generate the elimination function 2 of duplicating, from received signal, remove the signal component of above-mentioned Traffic Channel 2 of the above-mentioned Traffic Channel 2 that is multiplexed to received signal according to data by the above-mentioned Traffic Channel 2 resulting Traffic Channels 2 of demodulate/decode; According to the quality of communication path, select to have and eliminate and do not have any one among the elimination and carry out the demodulation of above-mentioned Traffic Channel 1.
27. dispensing device, be a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes above-mentioned OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, above-mentioned dispensing device is characterised in that to have: traffic channel data is carried out the traffic channel signal generation unit that OFCDM modulation back generates traffic channel signal; Utilization generates the control channel signals generation unit of control channel signals with respect to above-mentioned traffic channel signal any one all non-orthogonal signal at time, frequency, code according to the control channel data; By with the multiplexed transmission signal generation unit that sends signal that generates of above-mentioned traffic channel signal and above-mentioned control channel signals.
28. dispensing device, be a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes above-mentioned OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, above-mentioned dispensing device is characterised in that to have: traffic channel data is carried out the traffic channel signal generation unit that OFCDM modulation back generates traffic channel signal; The control channel data are modulated the control channel signals generation unit that the back generates control channel signals in any way; Switch to above-mentioned control channel signals and above-mentioned traffic channel signal at any one all mutually non-orthogonal signal of time, frequency, code with at the switch unit of any one all mutually orthogonal signal of time, frequency, code; By with the multiplexed transmission signal generation unit that sends signal that generates of above-mentioned traffic channel signal and above-mentioned control channel signals.
29. dispensing device as claimed in claim 28 is characterized in that, above-mentioned switch unit switches to above-mentioned non-orthogonal signal under the good situation of the quality of communication path, and switches to above-mentioned orthogonal signalling in that the quality condition of severe of communication path is next.
30. dispensing device as claimed in claim 28 is characterized in that, above-mentioned switch unit switches to above-mentioned nonopiate signal and above-mentioned orthogonal signalling according to the presently used spread spectrum yardage of above-mentioned traffic channel signal.
31., it is characterized in that the above-mentioned control channel signals that is generated by above-mentioned control channel signals generation unit is the signal after above-mentioned OFCDM modulation as any described dispensing device of claim 27 to claim 30.
32. dispensing device as claimed in claim 27 is characterized in that, above-mentioned control channel signals generation unit comprises the unit that utilizes the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol that this code word is sent.
33. receiving system, be to be used for receiving by the receiving system of claim 27 to any signal that described dispensing device sent out of claim 32, it is characterized in that having: be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to above-mentioned control channel signals; Above-mentioned traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Contain above-mentioned control channel signals demodulation, generate the unit that duplicates of the above-mentioned control channel signals be multiplexed to received signal and from received signal, remove the control channel clearing cell of the unit of control channel signals component according to the signal after the demodulation.
34. receiving system as claimed in claim 33, it is characterized in that, above-mentioned control channel clearing cell is duplicated according to the above-mentioned control channel signals of utilizing the resulting control channel symbol of the identifying unit of signaling point being judged after the above-mentioned control channel signals of demodulation to generate to be multiplexed to received signal, and removes the demodulation of carrying out above-mentioned traffic channel signal behind the control channel signals component from received signal.
35. receiving system as claimed in claim 33, it is characterized in that, above-mentioned control channel clearing cell utilizes after according to the above-mentioned control channel signals of demodulation the error correction decode unit resulting control channel data of decoding to generate duplicating of the above-mentioned control channel signals that is multiplexed to received signal, and removes the demodulation process of carrying out above-mentioned traffic channel signal behind the control channel signals component from received signal.
36. as claim 34 or the described receiving system of claim 35, it is characterized in that, above-mentioned control channel clearing cell judged according to past or resulting at that time control information that whether comprising in the above-mentioned Traffic Channel with this base station was the information of destination, when comprising in the above-mentioned Traffic Channel with this base station is under the situation of information of destination, generation is multiplexed to the duplicating of above-mentioned control channel signals of received signal, and removes the demodulation process of carrying out above-mentioned traffic channel signal behind the control channel signals component from received signal.
37. receiving system as claimed in claim 33, it is characterized in that above-mentioned control channel clearing cell has: according to utilizing above-mentioned identifying unit that signaling point is judged that resulting control channel symbol generates duplicating of above-mentioned control channel after the above-mentioned control channel signals demodulation and from received signal, remove removing (1) unit of above-mentioned control channel signals component; According to duplicating of the above-mentioned control channel that the resulting control channel data generation of above-mentioned control channel demodulate/decode is multiplexed to received signal, and from received signal, remove removing (2) unit of control channel signals component; According to the quality of communication path, select above-mentioned elimination (1) unit, above-mentioned elimination (2) unit and do not carry out the demodulation process that above-mentioned Traffic Channel is carried out in any one unit among this three of unit of elimination.
38. receiving system as claimed in claim 33, it is characterized in that, above-mentioned control channel clearing cell only has any one clearing cell among following two clearing cells: receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, according to the above-mentioned control channel of demodulation and judge that resulting control channel symbol generates above-mentioned elimination (1) unit that duplicates, removes above-mentioned control channel signals component from received signal of the above-mentioned control channel signals that is multiplexed to received signal; And receive above-mentioned Traffic Channel and above-mentioned control channel by multiplexed signal, generate above-mentioned elimination (2) unit that duplicates, from received signal, removes the control channel signals component of the above-mentioned control channel that is multiplexed to received signal according to the resulting control channel data of the above-mentioned control channel of demodulate/decode; According to the quality of communication path, select whether carry out removing to carry out the demodulation of above-mentioned Traffic Channel.
39. receiving system, be to be used for receiving by the receiving system of claim 28 to any signal that described dispensing device sent out of claim 30, it is characterized in that having: traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to control channel signals; Be used for switching time, frequency or code, so that the switch unit that above-mentioned control channel signals and above-mentioned traffic channel signal can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after the above-mentioned control channel demodulation or receive the control channel clearing cell that data generate the copied cells that duplicates of the above-mentioned control channel signals that is multiplexed to received signal and be used for removing the removal unit of control channel signals component from received signal; If above-mentioned control channel is above-mentioned orthogonal signalling, then directly carry out the demodulation of above-mentioned Traffic Channel; If above-mentioned control channel is above-mentioned nonopiate signal, then utilize above-mentioned control channel clearing cell from above-mentioned received signal, to remove the demodulation of carrying out above-mentioned Traffic Channel behind the above-mentioned control channel.
40. receiving system, be to be used for receiving by the receiving system of claim 28 to any signal that described dispensing device sent out of claim 30, it is characterized in that having: traffic channel signal is carried out the traffic channel signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data; Be used for carrying out the control channel signals processing unit of the demodulation process of control channel data according to control channel signals; Be used for switching time, frequency or code, so that the switch unit that above-mentioned control channel signals and above-mentioned traffic channel signal can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after the above-mentioned control channel demodulation or receive the control channel clearing cell that data generate the copied cells that duplicates of the above-mentioned control channel signals that is multiplexed to received signal and be used for removing the removal unit of control channel signals component from received signal; Above-mentioned control channel clearing cell is according to the quality of communication path and be above-mentioned orthogonal signalling or above-mentioned nonopiate signal, whether utilization is selected to carry out by above-mentioned removal unit to remove above-mentioned control channel from received signal by the signal judgement that above-mentioned copied cells duplicated out, carries out the demodulation of above-mentioned Traffic Channel thus.
41. dispensing device, be a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes above-mentioned OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, above-mentioned dispensing device is characterised in that to have: traffic channel data 1 is carried out traffic channel signal 1 generation unit that the OFCDM modulation generates traffic channel signal 1; Utilization is traffic channel signal 2 generation units that traffic channel data 2 generates traffic channel signal 2 with respect to the signal of above-mentioned Traffic Channel 1 any one all non-orthogonal signal at time, frequency, code according to the traffic channel data than above-mentioned traffic channel data 1 low speed; By with above-mentioned traffic channel signal 1 and the above-mentioned traffic channel signal 2 multiplexed transmission signal generation units that send signal that generate.
42. dispensing device, be a kind of use OFDM (OFDM) technology, the dispensing device that uses modulation system (OFCDM modulation), the feature of this modulation system is that the signal that utilizes above-mentioned OFDM technology to carry out after OFDM modulates is the signal that spreads in a plurality of subcarriers or a plurality of OFDM symbol or this two territories, above-mentioned dispensing device is characterised in that to have: traffic channel data 1 is carried out traffic channel signal 1 generation unit that the OFCDM modulation generates traffic channel signal 1; Traffic channel data 2 modulated in any way and generate the Traffic Channel 2 signal generation units of the signal of Traffic Channel 2; The signal that switches to the signal of above-mentioned Traffic Channel 2 and above-mentioned Traffic Channel 1 is at any one all mutually non-orthogonal signal of time, frequency, code with at the switch unit of any one all mutually orthogonal signal of time, frequency, code; By with above-mentioned traffic channel signal 1 and the above-mentioned traffic channel signal 2 multiplexed transmission signal generation units that send signal that generate.
43. dispensing device as claimed in claim 42 is characterized in that, above-mentioned switch unit switches to above-mentioned non-orthogonal signal under the good situation of the quality of communication path, and switches to above-mentioned orthogonal signalling in that the quality condition of severe of communication path is next.
44. dispensing device as claimed in claim 42 is characterized in that, above-mentioned switch unit switches above-mentioned nonopiate signal and above-mentioned orthogonal signalling according to the presently used spread spectrum yardage of the signal of above-mentioned Traffic Channel 1.
45., it is characterized in that the signal of the above-mentioned Traffic Channel 2 that is generated by above-mentioned traffic channel signal 2 generation units is the signals after above-mentioned OFCDM modulation as any described dispensing device of claim 41 to claim 44.
46. dispensing device as claimed in claim 41 is characterized in that, above-mentioned traffic channel signal 2 generation units comprise and utilize the unit that the low speed packet sign indicating number encodes and be configured to utilize a plurality of subcarriers of single OFDM symbol to send the unit of this code word.
47. receiving system, be to be used for receiving by the receiving system of claim 41 to any signal that described dispensing device sent out of claim 46, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; The traffic channel data of carrying out than above-mentioned traffic channel data 1 low speed according to traffic channel signal 2 is Traffic Channel 2 signal processing units of the demodulation process of traffic channel data 2; Comprise with the unit that duplicates that generates the above-mentioned traffic channel signal 2 that is multiplexed to received signal and be used for from above-mentioned received signal removing Traffic Channel 2 clearing cells of unit of the component of above-mentioned traffic channel signal 2.
48. receiving system as claimed in claim 47, it is characterized in that, according to above-mentioned Traffic Channel 2 demodulation and utilize the error correction decode unit resulting traffic channel data 2 of decoding, the signal component of duplicating and from received signal, remove above-mentioned Traffic Channel 2 of the above-mentioned traffic channel signal of utilizing above-mentioned Traffic Channel clearing cell to generate to be multiplexed to received signal 2.
49. receiving system as claimed in claim 47, it is characterized in that, according to the symbol that above-mentioned traffic channel signal 2 demodulation is also utilized the resulting Traffic Channel 2 of identifying unit of carrying out the signaling point judgement, utilize above-mentioned Traffic Channel clearing cell generation to be multiplexed to the component that duplicates and from above-mentioned received signal, remove above-mentioned traffic channel signal 2 of the above-mentioned traffic channel signal 2 of above-mentioned received signal.
50. receiving system as claimed in claim 47, it is characterized in that above-mentioned Traffic Channel clearing cell has: according to judging that with utilizing above-mentioned identifying unit to carry out signaling point after above-mentioned Traffic Channel 2 demodulation symbol of resulting Traffic Channel 2 generates elimination (1) unit that duplicates and remove the component of above-mentioned traffic channel signal 2 from received signal of the above-mentioned traffic channel signal 2 that is multiplexed to above-mentioned received signal; According to utilizing the above-mentioned error correction decode unit resulting traffic channel data 2 of decoding to generate elimination (2) unit that duplicates and from above-mentioned received signal, remove the signal component of above-mentioned Traffic Channel 2 of the above-mentioned traffic channel signal 2 that is multiplexed to above-mentioned received signal after above-mentioned Traffic Channel 2 demodulation; According to the quality of communication path, select above-mentioned elimination (1) unit, above-mentioned elimination (2) unit and do not carry out the demodulation that above-mentioned Traffic Channel 1 is carried out in any one unit among this three of unit of elimination.
51. receiving system as claimed in claim 47, it is characterized in that above-mentioned Traffic Channel clearing cell only has any one clearing cell among following two clearing cells: according to elimination (1) unit that duplicates, from received signal, removes the component of above-mentioned traffic channel signal 2 of the signal that generates the above-mentioned Traffic Channel 2 that is multiplexed to received signal by the symbol that carries out the resulting Traffic Channel 2 of above-mentioned judgement after the above-mentioned Traffic Channel 2 of demodulation; According to elimination (2) unit that duplicates and from received signal, remove the component of above-mentioned traffic channel signal 2 that generates the above-mentioned Traffic Channel 2 that is multiplexed to above-mentioned received signal by the above-mentioned Traffic Channel 2 resulting traffic channel datas 2 of demodulate/decode; According to the quality of communication path, select whether carry out removing to carry out the demodulation of above-mentioned Traffic Channel 1.
52. receiving system, be to be used for receiving by the receiving system of claim 42 to any signal that described dispensing device sent out of claim 44, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; Traffic channel signal 2 is separated Traffic Channel 2 signal processing units of the demodulation process of transferring to carry out traffic channel data 2; Be used for switching time, frequency or code, so that the switch unit that above-mentioned traffic channel signal 1 and above-mentioned traffic channel signal 2 can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after above-mentioned traffic channel signal 2 demodulation or receive Traffic Channel 2 clearing cells of removal unit that data generate the copied cells that duplicates of the above-mentioned traffic channel signal 2 that is multiplexed to above-mentioned received signal and be used for removing the component of traffic channel signal 2 from above-mentioned received signal; If above-mentioned traffic channel signal 2 is above-mentioned orthogonal signalling, then directly carry out the demodulation of above-mentioned traffic channel data 1; If above-mentioned traffic channel signal 2 is above-mentioned nonopiate signals, then will from above-mentioned received signal, remove the demodulation that above-mentioned traffic channel data 1 is carried out in above-mentioned traffic channel signal 2 backs by the signal that above-mentioned Traffic Channel 2 clearing cells are replicated.
53. receiving system, be to be used for receiving by the receiving system of claim 42 to any signal that described dispensing device sent out of claim 44, it is characterized in that having: traffic channel signal 1 is implemented Traffic Channel 1 signal processing unit that OFCDM separates the demodulation process of transferring to carry out traffic channel data 1; Traffic channel signal 2 is separated Traffic Channel 2 signal processing units of the demodulation process of transferring to carry out traffic channel data 2; Be used for switching time, frequency or code, so that the switch unit that above-mentioned traffic channel signal 1 and above-mentioned traffic channel signal 2 can both demodulation in any one all mutually non-orthogonal signal of time, frequency, code and among any one all mutually orthogonal signal of time, frequency, code any one; Comprise according to resulting receiving symbol after above-mentioned traffic channel signal 2 demodulation or receive Traffic Channel 2 clearing cells of removal unit that data generate the copied cells that duplicates of the above-mentioned traffic channel signal 2 that is multiplexed to above-mentioned received signal and be used for removing the component of traffic channel signal 2 from above-mentioned received signal; Above-mentioned Traffic Channel 2 clearing cells are according to the quality of communication path and be above-mentioned orthogonal signalling or above-mentioned nonopiate signal, utilization is by signal that above-mentioned copied cells duplicated out, judge and select whether to carry out from received signal, to remove above-mentioned traffic channel signal 2, carry out the demodulation of above-mentioned traffic channel data 1 thus by above-mentioned removal unit.
54. a data communication system is characterized in that having: as claim 27 to any described dispensing device of claim 32 with as any described receiving system of claim 33 to claim 38.
55. a data communication system is characterized in that having: as claim 28 to any described dispensing device of claim 31 with as claim 39 or the described receiving system of claim 40.
56. a data communication system is characterized in that having: as claim 41 to any described dispensing device of claim 46 with as any described receiving system of claim 47 to claim 51.
57. a data communication system is characterized in that having: as claim 42 to any described dispensing device of claim 45 with as claim 52 or the described receiving system of claim 53.
CNA2005800364897A 2004-08-24 2005-08-08 Data communication system, receiver apparatus and transmitter apparatus Pending CN101057432A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105991159A (en) * 2015-02-13 2016-10-05 中兴通讯股份有限公司 Data transmission method and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105991159A (en) * 2015-02-13 2016-10-05 中兴通讯股份有限公司 Data transmission method and apparatus
US10171128B2 (en) 2015-02-13 2019-01-01 Xi'an Zhongxing New Software Co., Ltd. Data transmission method and apparatus
CN105991159B (en) * 2015-02-13 2019-07-02 中兴通讯股份有限公司 Data transmission method and device

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