CN101282194A - Transmission/receive method capable of implementing block retransmission as well as transmitter and receiver - Google Patents
Transmission/receive method capable of implementing block retransmission as well as transmitter and receiver Download PDFInfo
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- CN101282194A CN101282194A CNA2007100904256A CN200710090425A CN101282194A CN 101282194 A CN101282194 A CN 101282194A CN A2007100904256 A CNA2007100904256 A CN A2007100904256A CN 200710090425 A CN200710090425 A CN 200710090425A CN 101282194 A CN101282194 A CN 101282194A
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Abstract
An embodiment of the invention discloses a transmission method which realizes the repeated transmission of block. The transmission method comprises the following steps: converting the data stream to be transmitted to a plurality of versions of data stream; and executing block repeat transmission conversion to each version of data stream, and transmitting a plurality of block repeat data streams which are obtained through block repeat transmission conversion. The embodiment of the invention also discloses a receiving method for realizing the block repeat transmission, wherein the receiving method comprises the following steps: receiving a plurality of block repeat data streams which are obtained from a plurality of data stream versions of a same data stream to be transmitted through repeat transmission conversion; restoring the plurality of block repeat data streams to a plurality of versions of data stream according to the block repeat transmission conversion mode adopted in transmission; and combining the plurality of versions of data stream to a received data stream. The embodiment of the invention furthermore discloses a transmitter and a receiver for realizing the data repeat transmission. The application of the method according to the invention can increase the transmission performance of the block repeat transmission.
Description
Technical field
The present invention relates to the communications field, particularly a kind of sending, receiving method that piece repeats to transmit and transmitter, receiver realized.
Background technology
It is a kind of interference protection measure to abominable transmission environment that piece repeats to transmit, and specifically be meant with cell block (BU, Block Unit) to generate the signal of transmission for unit, and to repeat to transmit with the cell block is the transmission signals that unit generates.Such as, repeat transmission and OFDM (OFDM at piece, OrthogonalFrequency Division Multiplexing) OFDM that repeats of the piece that combines of technology inserts (BR-OFDMA, Block Repeat OFDMA) in, it just is the signal that unit generates transmission with BU, here, BU is defined as the physical resource base unit of OFDM; And with the cell block is that unit carries out repeat transmission system, can the definition block number of repetition be the piece repeat factor (RF, RepeatFactor), duplication code generally adopts less repeat factor, can change according to the demand of different user and channel, such as, RF=1,2,4,8; When RF=1, be equivalent to a pure OFDM modulation system.Fig. 1 is the BR-OFDMA piece repeat transmission system schematic diagram of two users in the prior art.For each user, a cell block is repeated to have transmitted 6 times, is called BU1, BU2 ..., BU6, therefore, RF=6.By to same cell block repeat to lower the error probability of cell block in abominable transmission environment, such as, BU1, BU2 ..., the error probability of BU6 is under 1/2 the situation, the error probability of cell block only is (1/2)
6When a plurality of CUs identical time-frequency channel resource do piece repeat the transmission, can be according to a plurality of users of power distinction, as shown in fig. 1, direction along power shaft, top is user 1, the lower part is user 2, also can be according to piece duplication code (RC, RepeatCodes) distinguish the user, its method is: the data block that the user sends multiplies each other with different piece duplication codes and is weighted, here, duplication code is meant the weighted factor sequence that the cell block to each repetition is weighted, and the piece duplication code can adopt cluster orthogonal sequence or nonopiate sequence.
Fig. 2 is the transmitter architecture principle schematic that realizes BR-OFDMA in the prior art.As shown in Figure 2, symbol-modulated module 201, receive data flow to be sent through chnnel coding and other processing, and be symbol data streams with data stream modulates to be sent, symbol data streams after the modulation is carried out piecemeal, the data symbol block (DB, Date Block) that generates is input to module unit modulation module 202; Module unit modulation module 202, the DB that symbol-modulated module 201 is imported modulates mapping, behind the generation BU, the BU that generates is input to piece repeats modulation module 203; Piece repeats modulation module 203, after the BU of module unit modulation module 202 input carried out the repetition weighting, be input to string and modular converter 204, string and modular converter 204 repeat time-frequency domain unit that the symbol data streams after modulation module 203 modulation sends according to system with piece and go here and there and change, be mapped on the different OFDM modulated sub-carriers, pass through contrary fast fourier transform (IFFT again, Inverse Fast Fourier Transform) after module 205 is carried out the IFFT variation, after generating time-domain signal, send this time-domain signal.
Fig. 3 is the receiver structure principle schematic that realizes BR-OFDMA in the prior art.As shown in Figure 3, fast fourier transform (FFT, Fast Fourier Transform) module 305, receive the time-domain signal that repeats to modulate through piece, and the time-domain signal that receives carried out being input to parallel serial conversion module 304 after FFT changes, parallel serial conversion module 304, be used for to the data flow of FFT module input carry out and go here and there change after, the symbol data streams that is converted to is input to piece repeats demodulation module 303, repeatable block to received signal carries out the demodulation inverse mapping, generates behind the BU the BU input block unit demodulation module 302 that generates.Module unit demodulation module 302 after the BU demodulation, generates DB, is input to symbol demodulation module 301, after the symbol data streams that 301 couples of DB of symbol demodulation module form is carried out the symbol level demodulation, as the data flow that receives.Again the data flow input decoding and the correlation module thereof that receive are handled.
As seen, an employing at present simply repeats the cell block data or the method for weighting spread spectrum realizes that piece repeats transmission, and simply repeat or the antijamming capability of weighting spectrum spreading method relatively poor, often make data in the abominable wireless channel transmission environment of complexity, can't normal transmission, the error rate of perhaps transmitting data is higher, thereby transmission performance is lower.
Summary of the invention
In view of this, the embodiment of the invention is to provide a kind of sending method that realizes that piece repeats to transmit, and this method can improve the transmission performance that piece repeats to transmit.
The embodiment of the invention is to provide a kind of method of reseptance of realizing that piece repeats to transmit, and this method can improve the transmission performance that piece repeats to transmit.
The embodiment of the invention is to provide a kind of transmitter of realizing that piece repeats to transmit, and this transmitter can improve the transmission performance that piece repeats to transmit.
The embodiment of the invention is to provide a kind of receiver of realizing that piece repeats to transmit, and this receiver can improve the transmission performance that piece repeats to transmit.
For reaching above-mentioned first purpose, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of sending method that realizes that piece repeats to transmit, this method comprises: data flow to be sent is transformed into a plurality of data flow versions; Each data flow version is carried out piece repeat the transmission conversion, send through piece and repeat to transmit a plurality of blocks of repeating data streams that are converted to.
For reaching above-mentioned second purpose, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of method of reseptance of realizing that piece repeats to transmit, this method of reseptance comprises: receive a plurality of repeating datas stream, described a plurality of repeating datas stream repeats transmission by a plurality of data flow versions of same data flow conversion to be sent through piece and is converted to; The piece that adopts during according to transmission repeats to transmit conversion regime, and described a plurality of blocks of repeating data streams are reverted to a plurality of data flow versions; Described a plurality of data flow versions are merged into receiving data stream.
For reaching above-mentioned the 3rd purpose, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of transmitter of realizing that piece repeats to transmit, this transmitter comprises: converter unit, piece repeat to transmit converting unit, transmitting element;
Described converter unit is used to receive data flow to be sent, and data flow to be sent is transformed into a plurality of data flow versions, and described a plurality of data flow versions are input to piece repetition transmission unit;
Described is repeated to transmit converting unit, is used for a plurality of data flow versions to converter unit input and carries out piece and repeat the transmission conversion, and a plurality of blocks of repeating data streams that piece is repeated to transmit after the conversion are input to transmitting element;
Described transmitting element is used to send a plurality of blocks of repeating data streams that piece repeats to transmit the converting unit input.
For reaching above-mentioned the 4th purpose, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of receiver of realizing that piece repeats to transmit, this receiver comprises: receiving element, recovery unit and merge cells;
Described receiving element is used to receive a plurality of blocks of repeating data streams corresponding to same data flow to be sent, and a plurality of blocks of repeating data streams that receive are input to recovery unit;
Described recovery unit, the piece that adopts when being used for according to transmission repeats to transmit conversion regime, and a plurality of blocks of repeating datas streams corresponding to same data flow to be sent with the acquiring unit input revert to a plurality of data flow versions;
Described merge cells is used for a plurality of data flow versions from recovery unit are merged into a receiving data stream.
As seen from the above technical solution, sending, receiving method that the realization piece of the embodiment of the invention repeats to transmit and transmitter, receiver, generate a plurality of data flow versions by same data flow being increased the redundancy conversion or the conversion that interweaves, and a plurality of data flow versions are carried out piece repeat transmission, can utilize increases redundancy (IR, Incremental Redundancy) characteristics of the conversion or the conversion that interweaves, in abominable transmission environment, during such as edge cell, improve the antijamming capability that piece repeats to transmit, thereby improve transmission performance.
Description of drawings
Fig. 1 is that the BR-OFDMA piece of two users in the prior art repeats multiple access transmission means schematic diagram.
Fig. 2 is the transmitter architecture principle schematic that realizes BR-OFDMA in the prior art.
Fig. 3 is the receiver structure principle schematic that realizes BR-OFDMA in the prior art.
The sending method schematic flow sheet that the realization piece that Fig. 4 provides for first embodiment of the invention repeats to transmit.
The transmitter architecture schematic diagram that the realization piece that Fig. 5 provides for first embodiment of the invention repeats to transmit.
The method of reseptance schematic flow sheet that the realization piece that Fig. 6 provides for first embodiment of the invention repeats to transmit.
The receiver structure schematic diagram that the realization piece that Fig. 7 provides for first embodiment of the invention repeats to transmit.
The piece when comprising two data flow versions that Fig. 8 provides for first embodiment of the invention repeats multiple access transmission means schematic diagram.
The transmitter architecture schematic diagram that the realization piece that Fig. 9 provides for second embodiment of the invention repeats to transmit.
The receiver structure schematic diagram that the realization piece that Figure 10 provides for second embodiment of the invention repeats to transmit.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
In following embodiment, by data flow to be sent being transformed into a plurality of data flow versions; And a plurality of data flow versions of being transformed into are repeated transmission manner with piece send or receive, adopted the mapping mode that interweaves of different mode that same data flow to be sent is transformed into a plurality of data flow versions among the embodiment one, then adopted the IR mapping mode of different modes in embodiment two, conversion goes out a plurality of data flow versions.
Embodiment one:
The present embodiment supposition adopts the conversion that interweaves of different mode to generate a plurality of data flow versions, the sending method schematic flow sheet that the realization piece that Fig. 4 provides for first embodiment of the invention repeats to transmit to data flow.
Step 401: receive data flow to be sent.
In the present embodiment, data flow to be sent is the bit data flow through chnnel coding.
Step 402: the data flow that receives is carried out conversion.
In the present embodiment, the method for the data flow that receives being carried out conversion is: carry out the conversion that interweaves of different mode, the order that is about to data flow to be sent is carried out random rearrangement, obtains the different a plurality of different data streams versions of data arrangement order.For each data flow version execution in step 403-step 407.
Step 403: the data flow version is carried out symbol-modulated.
In the present embodiment, each data flow version is transformed into symbol data streams by symbol-modulated.
Step 404: generate data symbol block.
In the present embodiment,, generate data symbol block to the symbol data streams piecemeal.To the symbol data streams block division method be: the number of bits that data symbol block takies is set, and the number of bits according to being provided with intercepts symbol data streams successively, generates data symbol block.
Step 405: the data symbol block that generates is carried out cell block modulation mapping.
Present embodiment is assumed to BR-OFDMA piece repeat transmission system, and the method for the data symbol block that generates being carried out cell block modulation mapping is: the corresponding cell block of data symbolic blocks, cell block is the running time-frequency resource base unit of OFDM.
Step 406: cell block is carried out piece repeat modulation.
In the present embodiment, adopt prior art,, the cell block that obtains after the cell block modulation mapping is repeated modulation according to repeat factor.
Step 407: send piece repeating data stream.
Because present embodiment adopts the BR-OFDMA send mode, send piece repeating data stream, then the method for Fa Songing is: piece repeating data stream is gone here and there and after conversion and running time-frequency resource shine upon, pass through the IFFT conversion again, after frequency-region signal changed into time-domain signal, send this time-domain signal.
The transmitter architecture schematic diagram that the realization piece that Fig. 5 provides for first embodiment of the invention repeats to transmit.This transmitter comprises that converter unit 510, piece repeat to transmit converting unit 520 and transmitting element 530;
Converter unit 510, converter unit 510 is transformed into a plurality of data flow versions with data flow to be sent, and a plurality of data flow versions that will be transformed into are input to piece and repeat to transmit converting unit 520; In the present embodiment, the data flow to be sent of reception is the bit data flow through chnnel coding, and converter unit 510 comprises a plurality of interleavers 511; For each interleaver 511, all the data flow to be sent that receives is carried out the mutually different conversion that interweaves of pattern, obtain each data flow version.
Piece repeats to transmit converting unit 520, is used for each data flow version to converter unit 510 input and carries out piece and repeat the transmission conversion, and a plurality of blocks of repeating data streams that piece is repeated to transmit after the conversion are input to transmitting element 530;
Transmitting element 530 sends a plurality of blocks of repeating data streams that piece repeats to transmit converting unit 520 inputs.In the present embodiment, send mode is that BR-OFDMA sends, and then sending module 530 comprises string of the prior art and modular converter 532 and IFFT module 531.
Piece repeats to transmit converting unit 520 and comprises a plurality of symbol-modulated modules 521, a plurality of module unit modulation module 522 and a plurality of repetition modulation modules 523;
Each symbol-modulated module 521, each data flow version of receiving conversion unit input, and will be transformed into symbol data streams to each data flow version of input, to the symbol data streams piecemeal, generate DB, the DB that generates is input to module unit modulation module 522;
Each module unit modulation module 522 is used for the DB from the symbol-modulated module is carried out cell block modulation mapping, the BU that obtains after the cell block modulation mapping is input to piece repeats modulation module 523;
Each piece repeats modulation module 523, is used for that the BU from module unit is carried out piece and repeats modulation, and the piece repeating data stream after piece is repeated to modulate is input to transmitting element 530.
The method of reseptance schematic flow sheet that Fig. 6 provides for first embodiment of the invention.As shown in Figure 6, this method of reseptance may further comprise the steps corresponding to the sending method of Fig. 4:
Step 601: receive a plurality of blocks of repeating data streams.
Because present embodiment has adopted the BR-OFDMA receive mode, receive piece repeating data stream, its method is: after receiving time-domain signal, earlier this time-domain signal is carried out the FFT conversion, and string conversion and the inverse mapping of time-frequency resource after, just can obtain a plurality of a plurality of repeating datas and flow corresponding to same data flow to be sent.For each piece repeating data stream, execution in step 602-step 605.
Step 602: piece repeating data stream is carried out piece repeat demodulation.
In the present embodiment, the method for the data flow that receives being carried out piece repetition demodulation is: repeat modulation system according to the piece that sends, such as, repeat factor that adopts during transmission or repetition weighted factor carry out piece to the data flow that receives and repeat demodulation, obtain cell block.In the present embodiment, adopt the method for joint-detection to realize that piece repeats demodulation, its method is: the piece repeating data to a plurality of users detects, and obtains each user's cell block data.For each data flow version execution in step 603-step 605.
Step 603: cell block is carried out the cell block demodulation.
In the present embodiment, the BU modulation mapping mode during according to transmission comes BU is carried out the cell block demodulation, such as, the corresponding DB of BU.
Step 604: the merging data symbolic blocks generates symbol data streams.
Step 605: symbol data streams is carried out symbol demodulation.
In the present embodiment, according to the method for the symbol-modulated that sends, the data symbol block after the module unit demodulation is carried out symbol demodulation, during such as transmission, adopt 16QAM symbol-modulated mode, then symbol is separated timing, adopts the demodulation of 16QAM mode, produces the data flow version.
Step 606: a plurality of data flow versions that will recover are merged into a receiving data stream.
It is when being obtained by the conversion that interweaves of same data flow to be sent by different mode that present embodiment is assumed to a plurality of data flow versions, the method that a plurality of data flow versions that then will recover are merged into a receiving data stream is: a plurality of data flow versions are carried out merging after the deinterleaving, obtain receiving data stream.The pattern that deinterleaving pattern and its of each data flow version interweave is corresponding, the method that data flow after the deinterleaving is merged is: elder generation is according to the communication quality of transmission channel, distribute a weighted value for each data flow version, after again each data flow being multiply by corresponding weighted value, addition summation again obtains receiving data stream.When the weighted value of each distribution of flows equates, can simplify paired data stream version and simply sue for peace.
The receiver structure schematic diagram that Fig. 7 provides for first embodiment of the invention.This receiver comprises: recovery unit 720, merge cells 710 and receiving element 730;
Receiving element 730 receives a plurality of blocks of repeating data streams corresponding to same data flow to be sent, and a plurality of blocks of repeating data streams that receive are input to recovery unit 720; In the present embodiment, receive mode is BR-OFDMA, and then receiving element 730 comprises parallel serial conversion module 732 of the prior art and FFT module 731.
Merge cells 710 is used for a plurality of data flow versions from recovery unit 720 are merged into a receiving data stream.Merge cells 710 comprises: the deinterleaver 711 and the merging module 712 that interweaves;
Each deinterleaver 711 according to the pattern of the conversion that interweaves, carries out deinterleaving to each the data flow version from recovery unit, the data flow version after each deinterleaving that obtains is input to interweave merge module 712;
Each interweaves and merges module 712, and each data flow weighting that deinterleaver 711 is imported is merged into a receiving data stream.
Each piece repeats demodulation module 721, repeats modulation system according to the piece that sends, and each the piece repeating data stream from receiving element 730 is carried out corresponding piece repeat demodulation, piece is repeated the BU that demodulation obtains be input to module unit demodulation module 722; In the present embodiment, piece repeats demodulation module and is used for joint-detection realization piece repetition demodulation.
Each module unit demodulation module 722, the cell block modulation mapping mode during according to transmission carries out corresponding cell block demodulation to the DB that repeats demodulation module 721 from piece, and the DB that obtains after the cell block demodulation is input to symbol-modulated module 723;
Each symbol-modulated module 723 is used for the method according to the symbol-modulated that sends, and the symbol data streams of forming from the data symbol block of module unit demodulation module 722 is carried out symbol demodulation, recovers the data flow version.
As seen from the above-described embodiment, sending, receiving method that the embodiment of the invention provides and transmitter, receiver, can transmit with different data flow versions and replace in the prior art piece to repeat transmission, the piece when comprising two data flow versions that Fig. 8 provides for first embodiment of the invention repeats multiple access transmission means schematic diagram.As shown in Figure 8, same user's same data flow is not only repetition or spread spectrum at time-frequency domain, and comprise different data flow versions through conversion, after data flow version process symbol-modulated, piecemeal, the processing of module unit mapping block, obtain the data block version, i.e. RV1 as shown in Figure 8, RV2, can replace repeat factor with RV1 and RV2 is that 2 piece repeats transmission.Perhaps, can carry out 4 times to 2 different pieces of information piece versions repeats the alternative only piece of 8 times of repetitions to repeat transmission.The embodiment of the invention can also be when producing the different data streams version, by the employing mapping mode that interweaves, resist the environment that declines soon in the wireless channel by the method for upsetting the data flow order, recur wrong probability, increase the antijamming capability of transmission thereby reduce.
Embodiment two:
Present embodiment supposition adopts the IR conversion of different mode to generate two data flow versions to data flow, and the data flow to be sent that receives is the bit data flow through 1/3 turbo chnnel coding.The transmitter architecture schematic diagram that Fig. 9 provides for second embodiment of the invention.The difference of Fig. 9 and Fig. 5 is, because of embodiment two be transformed to the IR conversion, then converter unit 910 has comprised the IR conversion 911 of the data flow that receives being carried out different modes.In the present embodiment, IR conversion 911 is the IR device of the complementation punching of part IR conversion.
The present embodiment sending method is similar to method shown in Figure 4, its difference is, owing to adopted the IR method of complementary punching in the present embodiment, promptly the check bit that the data flow that receives is punched has nothing in common with each other, thereby step 402 should change into: the data flow that receives is carried out the IR conversion of different mode.Here, the IR method of complementary punching is specially: earlier according to punching rate, remove the check bit in the data flow for the first time, obtain data flow version 1, then, again according to punching rate, remove the check bit of not removing for the first time, obtain the data flow version 2.Such as, bit data flow through turbo 1/3 coding comprises three groups of Bit datas, first group is information bit, can not punch, the second, three group is check bit, when punching rate is 1/3, can punch according to complementation, when punching for the first time, the position of the check bit of removal is the bit of odd number, obtains data flow version 1, and when punching for the second time, the position of the check bit of removing is the bit of even number, obtains the data flow version 2, for each data flow version, carry out and the identical step of step 403-step 407, do not give unnecessary details one by one here.
The receiver structure schematic diagram that Figure 10 provides for second embodiment of the invention.The difference of Fig. 7 and Figure 10 is, merge cells 1010 is weighted merging with a plurality of data flow versions, obtains a receiving data stream.
IR merges module 1012, and each data flow after the weighting of weighting block input is sued for peace, and is merged into a receiving data stream.
The method of reseptance of Figure 10 is the sending method corresponding to the transmitter employing of Fig. 9, its method of reseptance is similar to step shown in Figure 6, its difference is, description for step 1006 should be: because of present embodiment is assumed to a plurality of data flow versions is when being obtained by the IR conversion of same data flow to be sent by different modes, the method that two data flow versions that then will recover are merged into a receiving data stream is: two data flow versions are weighted merging, obtain a receiving data stream.The method that its weighting merges is: earlier according to the communication quality of transmission channel, distribute a weighted value for each data flow version, each data flow be multiply by addition summation after the corresponding weighted value again, obtain receiving data stream.When the weighted value of each distribution of flows equates, can simplify paired data stream version and simply sue for peace.In the present embodiment, the information bit in the data flow version is owing to after the summation, become original twice, and its power is greater than other check bit, thereby can improve the error correcting capability of system.
In the present embodiment, the IR method of the complementation of employing punching is a part IR method, and present embodiment also can adopt other part IR method or full IR method.The data retransmission of part IR method is made of information bit and the redundant bit that increases newly, and the data retransmission of full IR method then is made of steadily increase redundancy fully.
As seen from the above-described embodiment, the embodiment of the invention is by adopting the IR conversion, not only can improve the error correcting capability of system, and, because receiver is weighted merging to the data flow version that receives by corresponding transmission channel quality, such as, be weighted merging by signal to noise ratio, thereby, can also obtain the diversity gain of information data.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. a sending method that realizes that piece repeats to transmit is characterized in that, this method comprises: data flow to be sent is transformed into a plurality of data flow versions; Each data flow version is carried out piece repeat the transmission conversion, send through piece and repeat to transmit a plurality of blocks of repeating data streams that are converted to.
2. the sending method that realization piece according to claim 1 repeats to transmit, it is characterized in that, the described method that data flow to be sent is transformed into a plurality of data flow versions comprises: data flow to be sent is carried out the increase redundancy IR conversion of the interweave conversion or the different modes of different mode, obtain a plurality of data flow versions.
3. the sending method that realization piece according to claim 2 repeats to transmit is characterized in that, the conversion of described increase redundancy comprises: part IR conversion.
4. the sending method that realization piece according to claim 1 repeats to transmit, it is characterized in that, describedly each data flow version is carried out the method that piece repeats to transmit conversion comprise:, this data flow version is transformed into symbol data streams by symbol-modulated to each data flow version; To described symbol data streams piecemeal, generate data symbol block; Described data symbol block is carried out cell block modulation mapping; The cell block that obtains through the cell block modulation is carried out piece repeat modulation, obtain piece repeating data stream.
5. the sending method that realization piece according to claim 4 repeats to transmit, it is characterized in that, the method of the piece repeating data stream after described transmission piece repeats to modulate comprises: adopt piece to repeat OFDM BR-OFDM or piece repetition orthogonal frequency division multiplexing multiple access BR-OFDMA send mode, send described block of repeating data stream;
The method that described data symbol block to generation is carried out cell block modulation mapping comprises: the data symbol block that generates is carried out the modulation mapping of OFDM resource.
6. method of reseptance of realizing that piece repeats to transmit, it is characterized in that, this method of reseptance comprises: receive a plurality of repeating datas stream, described a plurality of repeating datas stream repeats transmission by a plurality of data flow versions of same data flow conversion to be sent through piece and is converted to; The piece that adopts during according to transmission repeats to transmit conversion regime, and described a plurality of blocks of repeating data streams are reverted to a plurality of data flow versions; Described a plurality of data flow versions are merged into receiving data stream.
7. the sending method that realization piece according to claim 6 repeats to transmit, it is characterized in that, the method of a plurality of blocks of repeating data streams of described reception comprises: adopt BR-OFDM or BR-OFDMA receive mode, receive a plurality of blocks of repeating data streams corresponding to same data flow to be sent.
8. the method for reseptance that repeats to transmit according to claim 6 or 7 described realization pieces, it is characterized in that, the described piece that adopts when sending repeats to transmit conversion regime, the method that will revert to a plurality of data flow versions corresponding to the piece repeating data stream of same data flow to be sent comprises: the piece that adopts during according to transmission repeats modulation system, a plurality of blocks of repeating data streams that receive is carried out corresponding piece repeat demodulation; The cell block modulation mapping mode that adopts during according to transmission, the cell block that piece repetition demodulation is obtained carries out corresponding cell block demodulation; The mode of the symbol-modulated that adopts during according to transmission is carried out symbol demodulation to the symbol data streams that the data symbol block after the module unit demodulation is formed, and recovers a plurality of data flow versions.
9. the method for reseptance that realization piece according to claim 6 repeats to transmit, it is characterized in that, when described piece repeating data stream corresponding to same data flow to be sent is that IR conversion by different modes is when obtaining, the method that described a plurality of data flow versions that will recover are merged into a receiving data stream is: a plurality of data flow versions are weighted merging, obtain receiving data stream.
10. the method for reseptance that realization piece according to claim 6 repeats to transmit, it is characterized in that, when described piece repeating data stream corresponding to same data flow to be sent is that the conversion that interweaves by different mode is when obtaining, the method that described each data flow version that will recover is merged into receiving data stream is: after a plurality of data flow versions are carried out deinterleaving, be weighted merging, obtain receiving data stream.
11. the method for reseptance that repeats to transmit according to claim 9 or 10 described realization pieces, it is characterized in that, describedly be weighted merging, the method that obtains receiving data stream comprises: according to the communication quality of transmission channel, distribute a weighted value for each data flow version, after again each data flow version being multiply by corresponding weighted value, the addition summation obtains receiving data stream.
12. a transmitter of realizing that piece repeats to transmit is characterized in that, this transmitter comprises: converter unit, piece repeat to transmit converting unit, transmitting element;
Described converter unit is used to receive data flow to be sent, and data flow to be sent is transformed into a plurality of data flow versions, and described a plurality of data flow versions are input to piece repetition transmission unit;
Described is repeated to transmit converting unit, is used for a plurality of data flow versions to converter unit input and carries out piece and repeat the transmission conversion, and a plurality of blocks of repeating data streams that piece is repeated to transmit after the conversion are input to transmitting element;
Described transmitting element is used to send a plurality of blocks of repeating data streams that piece repeats to transmit the converting unit input.
13. the transmitter that realization piece according to claim 12 repeats to transmit is characterized in that described converter unit comprises a plurality of interleavers;
Described each interleaver is used for carrying out the different conversion that interweaves of pattern to sent data flow, is transformed into each data flow version.
14. the transmitter that realization piece according to claim 12 repeats to transmit is characterized in that, described converter unit comprises a plurality of IR devices;
Described each IR device is used for carrying out the different IR conversion of mode to sent data flow, is transformed into each data flow version.
15. a receiver of realizing that piece repeats to transmit is characterized in that, this receiver comprises: receiving element, recovery unit and merge cells;
Described receiving element is used to receive a plurality of blocks of repeating data streams corresponding to same data flow to be sent, and a plurality of blocks of repeating data streams that receive are input to recovery unit;
Described recovery unit, the piece that adopts when being used for according to transmission repeats to transmit conversion regime, and a plurality of blocks of repeating datas streams corresponding to same data flow to be sent with the acquiring unit input revert to a plurality of data flow versions;
Described merge cells is used for a plurality of data flow versions from recovery unit are merged into a receiving data stream.
16. the receiver that realization piece according to claim 15 repeats to transmit is characterized in that, described merge cells comprises: a plurality of weighting blocks and IR merge module;
Described each weighting block is used for mode and transmission channel quality according to the IR conversion, and each the data flow version from recovery unit is weighted, and the data flow version after the weighting is input to IR merges module;
Described IR merges module, is used for each data flow after the weighting of weighting block input is sued for peace, and is merged into a receiving data stream.
17. the receiver that realization piece according to claim 15 repeats to transmit is characterized in that, described merge cells comprises: a plurality of deinterleavers and the merging module that interweaves;
Described each deinterleaver is used for the pattern according to the conversion that interweaves, and each the data flow version from recovery unit is carried out deinterleaving, and each the data flow version after the deinterleaving is input to the merging module that interweaves;
The described merging module that interweaves is used for the merging that interweaves of the data flow version after each deinterleaving of deinterleaver module input is obtained a receiving data stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100904256A CN101282194A (en) | 2007-04-06 | 2007-04-06 | Transmission/receive method capable of implementing block retransmission as well as transmitter and receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100904256A CN101282194A (en) | 2007-04-06 | 2007-04-06 | Transmission/receive method capable of implementing block retransmission as well as transmitter and receiver |
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