CN1561604A - Method and apparatus for hybrid error correction in mobile telecommunications - Google Patents
Method and apparatus for hybrid error correction in mobile telecommunications Download PDFInfo
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- CN1561604A CN1561604A CN02819173.0A CN02819173A CN1561604A CN 1561604 A CN1561604 A CN 1561604A CN 02819173 A CN02819173 A CN 02819173A CN 1561604 A CN1561604 A CN 1561604A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0064—Concatenated codes
- H04L1/0066—Parallel concatenated codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0643—Properties of the code block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1803—Stop-and-wait protocols
Abstract
A method and apparatus for hybrid error correction in mobile telecommunications, wherein; the coding for input bits by the originating includes Turbo product code coding and Space-time block coding; the decoding for the received data by the terminating includes iterative decoding between the Space-time block code the Turbo product code; when the decoding for the received data by the terminating is unsuccessful, the terminating feeds back negative acknowledge signal to the originating; the originating responds to the terminating's feedback negative acknowledge signal by sending the same Turbo product code repeatedly until the terminating feeds back acknowledge signal to the originating; when the decoding for the received data by the terminating is successful, the terminating feeds back acknowledge signal to the originatnig and receives the frame of data, the decoding is finished. The complex and delay for decoding are reduced, the spending of registers of the terminating is decreased and the system obtains effective diversity gain. In addition, the system improves its coding gain by adopting the iterative decoding between the Space-time block and Turbo product code.
Description
A kind of hybrid error correction method and device technical field for wireless mobile communications
The invention belongs to communication technical field, it is related to the hybrid error correction in mobile radio system, more particularly to a kind of to be based on Turbo product codes（Turbo Product Code, it is abbreviated as TPC), in combination with space-time block code (Space-time Block Coding, it is abbreviated as STBC) mixed automatic retransfer (the Hybrid Automat ic Repeat reQuest of technology, cylinder is written as HARQ) error correction is concretely a kind of hybrid error correction method and device for wireless mobile communications.
Background technology
The characteristic of channel of mobile radio system is sufficiently complex, and refraction, reflection, multipath, shade, Doppler frequency shift and multi-access inference etc. will cause a variety of fade-outs, drastically influence the performance of wireless communication system.Diversity technique is one of most effective technological means of reduction multipath fading in wireless channel environment, and systematic function can be improved under the conditions of frequency efficiency is not reduced using the diversity antenna technology of multiple transmitting antennas and/or multiple reception antennas.With the development of microelectric technique, the weight of mobile phone is more and more lighter, and volume is also less and less, to be installed in limited mobile station multiple antennas be difficult realize be also it is uneconomic, therefore, base station use multiple antenna transmission data technology（I.e.：Transmitting diversity technology）, increasingly become focus of concern.Space Time Coding is a kind of collection transmitting diversity and is encoded in integral technology, signal all introduces coding on time and spatial domain, with preferable frequency validity and power efficiency, the transmission of high-speed data can be realized on the premise of transmission power and not extending bandwidth is not increased.At present, the transmitting diversity technology and Space-Time Codes of multiple antennas have been written into 3G (Third Generation) Moblie standard, but, some diversity gains can only be obtained by depending merely on transmitting diversity technology, its performance is far from meeting existing data transmission service to the bit error rate and pass the requirement of letter rate, it is therefore necessary to by transmitting diversity technology and the appropriate combination of channel coding progress.The reasonable cascade of channel coding and Space Time Coding can obtain coding gain, diversity gain and a kind of extra coding gain.
Turbo codes turn into the channel coding technology attracted most attention nearly ten years with its powerful error-correcting performance, and typical Turbo coding schemes include Parallel Concatenated Convolutional Code（ Paral lel
Concatenated Convolutional Code, cylinder is written as PCCC), SCCC Serial Concatenated Convolutional Code（Serial Concatenated Convolutional Code, are abbreviated as SCCC) and Turbo product codes（TPC) three kinds.However, data service of the mobile radio system desirable to provide playout length, though the Turbo code of powerful can not meet the high-speed data service bit error rate less than 10-6Requirement, in order to realize the transmitting of high data rate, 3-G (Generation Three mobile communication system) is proposed with the error control mechanism that the HARQ technologies based on PCCC schemes realize physical layer, to ensure the requirement of service quality.HARQ methods of the prior art mainly include truncating Turbo (Rate Compat ible Punctured Turbo based on code check matching, it is abbreviated as RCPT) the Chase combined methods and steadily increase redundancy (Incremental Redundancy, be abbreviated as IR) method of code.In Chase combined methods, originator need to only retransmit encoded RCPT code words, and the repetition code word received every time is weighted after merging and decoded by receiving end by the signal to noise ratio of transmission channel.The shortcoming of this method is can not to provide effective throughput of system in the high channel bit error rate.IR methods are then to retransmit the negative receipt that different data response receiving ends are fed back by decoding failure.Under severe channel circumstance, as the increase of number of retransmissions is, it is necessary to which multistage Turbo encoder cascade produces low bit- rate RCPT codes, therefore, raising of the IR methods to systematic function is to increase system complexity as cost.
The content of the invention
It is an object of the invention to, a kind of hybrid error correction method and device for wireless mobile communications is provided, it improves system reliability using error-control technique, while reducing multipath fading using diversity technique, and be combined HARQ technologies with transmitting diversity technology, i.e.,：It is combined by the HARQ error correction based on Turbo product codes with space-time block code, TPC- HARQ/STBC error correction is used in wireless mobile communications, to reduce the complexity and decoding delay of decoding, and the expense of receiving end buffer is reduced；Allow system to obtain effective diversity gain, and improve coding gain.
Technical scheme is as follows：
A kind of hybrid error correction method for wireless mobile communications, it is characterised in that：Start includes Turbo product codes coding and Space-Time Block Coding coding to the coding of input bit；
Receiving end includes to the decoding for receiving data：Iterative decoding between space -time code and Turbo product codes；
When decoding failure of the receiving end to reception data, receiving end feeds back negative receipt signal to originator；Hold to repeat to send the negative receipt signal that same Turbo product code codewords answer receiving end to feed back back and forth, until receiving end acknowledges signal to originator feedback；
When receiving end to receive data it is successfully decoded when, receiving end acknowledges to originator feedback and signal and receives this frame data, and decoding terminates.
Described originator includes Turbo product codes coding to the coding of input bit and Space-Time Block Coding coding refers to：The concatenated coding started to input bit progress Turbo product codes coding and Space-Time Block Coding coding；In coding, Turbo product code codings first are carried out to input bit, the data after being encoded to Turbo product codes are interleaved, Space-Time Block Coding coding is carried out to the data after intertexture.
Described receiving end includes the iterative decoding between space -time code and Turbo product codes to the decoding for receiving data and referred to：Receiving end repeats code word to the reception data of the different transmitting antennas of correspondence and Turbo product codes that receive and merged, and is iterated between the decoding of Turbo product codes, realizes joint decoding；In decoding, anti-interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings.
A kind of described hybrid error correction method for wireless mobile communications, it is characterised in that start includes to the process step of input bit：
Originator carries out CRC codings to input bit；
Bit after to being encoded through CRC carries out the concatenated coding of Turbo product codes coding and Space-Time Block Coding coding, i.e.,：Turbo product code codings first are carried out to the bit after CRC check, the data after being encoded to Turbo product codes are interleaved, Space-Time Block Coding coding is carried out to the data after intertexture；
Data after to being encoded through Space-Time Block Coding are modulated and spread；
Signal after modulation and spread spectrum is transmitted into fading channel.
A kind of described hybrid error correction method for wireless mobile communications, it is characterised in that receiving end includes to the process step for receiving data：
Receiving end receives the signal transmitted through fading channel, and the processing of the signal progress despreading and demodulation to reception；
Row decoding is entered to the data after despreading and demodulation, i.e.,：To the different transmitting antennas of correspondence received
Reception data and Turbo product codes repeat code word and carry out Chase merging, and carry out cascaded iteration between the decoding of Turbo product codes, realize decoding, wherein：Anti- interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings；Data after decoding are carried out with CRC check, and output data.
Described Chase, which merges, to be merged using Maximal ratio combiner algorithm.
A kind of described hybrid error correction method for wireless mobile communications, its step can further comprise：When originator sends code word A first on two transmitting antennas simultaneously（Step 401);
The code word A* through different declines received is carried out Chase with A** and merged by receiving end, and described decoding（Step 402);
If through CRC check（Bu Sudden 403) think that decoding is correct, then receive the frame data, ' acknowledged while feeding back to originator one（Step 410)；
If it was found that there is not repairable mistake in A* or A**, being stored in during receiving end Slow deposits, and feed back to one negative receipt request retransmission of originator（Step 404)；
Originator is received after first negative receipt, retransmits code word A (step 405);
A*, A** progress Maximal ratio combiner during receiving end deposits A*, A** for newly receiving and receiving end Slow obtains B* (step 406);
B* is then sent into TPC decoders and carries out error correction（Bu Sudden 407)；
CRC check is carried out to the data after decoding again（Step 408)；
If successfully decoded, the data frame is received（Step 410);
If decoding failure, new A*, A** is also stored in during Slow is deposited merges decoding next time with original A*, A**-wait, while negating that receipt is fed back to originator requirement re-transmission（Bu Sudden 409)；
Above step continues up to the data frame and is correctly received.
A kind of hybrid error correction device for wireless mobile communications, including：Emitter and reception device, it is characterised in that：Emitter at least includes the code device that Turbo product code encoders and Space-Time Block Coding encoder are cascaded, to be encoded to input bit；
Reception device at least includes：The joint decoding device of Turbo product codes and Space-Time Block Coding, to enter code to receiving data.
Described Turbo product code encoders and the code device of Space-Time Block Coding encoder cascade include：Turbo product code encoders, interleaver, Space-Time Block Coding encoder；Wherein：
Signal to be encoded is the input of Turbo product code encoders, and Turbo product code encoders are output as the input of interleaver, and interleaver is output as the data after the input of Space-Time Block Coding encoder, Space-Time Block Coding encoder exports coding.
Described Turbo product codes and the joint decoding device of Space-Time Block Coding include：Combiner, anti-interleaver, Turbo product code decoders, wherein：
The reception data of the different transmitting antennas of the correspondence received and Turbo product codes are repeated code word feeding combiner by reception device, are iterated between the output data of combiner and the output data of Turbo product code decoders, are realized joint decoding；In decoding, anti-interleaver is output as the input of Turbo product code decoders.
Described emitter also includes：CRC encoders, modulation spread spectrum device；Wherein：Input bit is the input of CRC encoders；
CRC encoders are output as the input of the concatenated coding device of Turbo product code encoders and Space-Time Block Coding encoder；
Data after coding spread the input of device for modulation；
The modulation spread spectrum exportable data of device.
Described reception device also includes：Despread-and-demodulation device, CRC decoders；Wherein：The signal transmitted through fading channel is the input of despread-and-demodulation device；
Despread-and-demodulation device is output as the input of the joint decoding device of Turbo product codes and Space-Time Block Coding；
Data after decoding for CRC decoders steal into；
The exportable data of CRC decoders.
Described a kind of hybrid error correction device for wireless mobile communications, it is characterised in that described emitter also includes：CRC encoders, modulation spread spectrum device；Wherein：Input bit is the input of CRC encoders；CRC encoders are output as Turbo product code encoders and Kong Shi Fen Group codes coding
The input of the concatenated coding device of device；Data after coding spread the input of device for modulation；Modulation spreads the exportable data of device to fading channel；
Described reception device also includes：Despread-and-demodulation device, CRC decoders；Wherein：The signal transmitted through fading channel is the input of despread-and-demodulation device；Despread-and-demodulation device is output as the input of the joint decoding device of Turbo product codes and Space-Time Block Coding；Data after decoding are the input of CRC decoders；The exportable data of CRC decoders simultaneously can concatenated coding device of the feedback data to described Turbo product code encoders and Space-Time Block Coding encoder.
This TPC-HARQ/STBC methods of the present invention, it is characterised in that：Channel coding uses TPC encoding schemes, transmitting diversity technology uses STBC schemes, mix ARQ mechanism and use a kind of similar Cha s e combined methods, that is, start and respond the negative receipt that receiving end is fed back by decoding failure to repeat to send same TPC code words；Receiving end merges algorithm using Chase to reception data of two antennas through different declines and re-transmission data first and realizes a kind of similar multi-path combing, then carry out cascaded iteration between TPC decodings again, coding gain and diversity gain are obtained simultaneously, and then improve the reliability and validity of system, whole system is all reasonably optimized and is improved in performance and the aspect of complexity two.
Using the present invention（TPC- HARQ/STBC) method and device, because TPC encoding schemes have code structure design simple, decoding complexity and decoding delay are reduced, the expense of receiving end buffer is reduced.Because this method combines STBC, so construction is easy, decode simple diversity technique again so that system obtains effective diversity gain.Further, since employing the iterative decoding between TPC and STBC, coding gain is improved.Brief description of the drawings
Below in conjunction with accompanying drawing and presently preferred embodiments of the present invention, it is described in detail in the present invention, accompanying drawing：Fig. 1 gives the code division multiple access system block diagram using apparatus of the present invention.
Fig. 2 gives the structured flowchart of the concatenated coding device applied to apparatus of the present invention；
Fig. 3 gives the structured flowchart of the joint decoding device of correspondence apparatus of the present invention；
Fig. 4 gives the working-flow figure for realizing the inventive method.
Embodiment method and apparatus of the present invention, are also known as the method and apparatus based on TPC- HARQ/STBC, and it may be applicable to any wireless system for providing high speed data transfers business.Below with code division multiple access system, more precisely, being that by taking the physical layer of the system as an example, the present invention is described for high-speed packet data service, still, the invention is not limited in this.
Refer to the attached drawing 1:Fig. 1 is given using the present invention（TPC-HARQ/STBC) the code division multiple access system block diagram of device.
System transmitter includes CRC encoders 10, TPC/STBC cascaded encoders 11, QPSK modulation spread spectrum devices 12 and 13.Information bit to be sent is sent into CRC encoders 10 by originator with regular length framing, adds the check bit for error detection（System should be by CRC check bit design enough to length so that can not error detection probability can ignore in system design allowed band）.TPC/STBC cascaded encoders 11 are formed by TPC encoders with STBC encoders through an interleaver serially concatenated, for realizing channel coding and transmitting diversity.Coding output two groups of orthogonal signalling be admitted to after two transmitting antennas respectively spread spectrum qpsk modulator 12,13 in complete modulation and spread spectrum operation, and after through different fading channels 14,15 reach system reception device.
System receiver is made up of despread-and-demodulation device 16 with 17, TPC/STBC joint decoders 18, CRC decoders 19.Despread-and-demodulation device 16,17 completes despread-and-demodulation function to the reception data by two different declines first.TPC/STBC joint decoders 18 realize the iterative decoding between STBC and TPC using the Soft Inform ation transmission between combiner and TPC decoders.Finally, receiving end utilizes the error detection of CRC decoders 19, such as decodes correctly, then receives the data, while one ACK (Acknowledge) signal of feedback notifies originator；Otherwise, such as decoding error, then the code word for failing correct decoding is stored in during receiving end Slow deposits by receiving end, and feeds back a NAK signal to originator by feedback channel, asks the re-transmission of the code word.
In fig. 2, give applied to the TPC/STBC concatenated coding structures in (TPC-HARQ/STBC) device of the invention.TPC encoders 21 are chosen subcode by the code check of design and encoded, and take possible truncate to operate.The TPC code words for encoding output enter STBC encoders 23 after interleaver 22, are consequently formed two transmitting antenna Txl and Tx2 of correspondence two groups of orthogonal signalling.
Fig. 3 gives the TPC/STBC iterative decoding structures corresponding to Fig. 2 cascade encoding schemes.Combiner 31 is by two through the different declines group data being currently received and is previously stored in the data progress Maximal ratio combiner that receiving end Slow is deposited, data after 32 pairs of TPC decoders merge enter row decoding using PML algorithms, meanwhile, the two completes iterative process by the mutual transmission of Soft Inform ation.
Realize the present invention（TPC- HARQ/STBC) method working-flow it is as shown in Figure 4.Referring to the drawings 4, TPC- HARQ/STBC method specific implementation process of the present invention is as follows：Originator sends code word A (step 401) first on two transmitting antennas simultaneously, and receiving end merges decoding to the code word A* and A** through different declines received（Step 402), if through CRC check（Bu Sudden 403) think that decoding is correct, then receive the frame data, acknowledged while feeding back to originator one（Bu Sudden 410);Otherwise, if finding there is not repairable mistake in A* or A**, it is stored in during receiving end Slow deposits, and feed back to one negative receipt request retransmission of originator（Step 404).Originator is received after first negative receipt, retransmit code word A (step 405), A*, A** progress Maximal ratio combiner during receiving end deposits A*, A** for newly receiving and receiving end Slow obtains B* (step 406), then sends into TPC decoders and carries out error correction（Step 407), then enter CRC check of passing through（Step 408), if successfully decoded, the data frame is received（Step 410);Otherwise, if decoding failure, new A*, A** is also stored in during Slow is deposited merges decoding next time with original A*, A**-wait, while negating that receipt is fed back to originator requirement re-transmission（Step 409), this process continues up to the data frame and is correctly received.
TPC- HARQ/STBC methods proposed by the present invention are by cascading a kind of effective hybrid error correction method that TPC and STBC is provided, it encodes the combining form with STBC schemes using TPC, more preferable systematic function can be provided, this method mainly has following advantage.
First, channel coding selects TPC schemes.From the two-dimentional TPC encoding schemes being made up of two linear block codes in present pre-ferred embodiments, while from pseudo- maximum likelihood（Pseudo Maximum Likel ihood, are abbreviated as PML) algorithm for TPC decode.System can suitably be truncated by reasonably choosing subcode, and to it, obtain more flexible TPC code checks.J. Hagenauer is pointed out in document [1], when code check is more than2When/3, the performance of TPC schemes is better than PCCC schemes.In addition, TPC is more suitable for short frame structure.
P T/CN2002/000498 bis-, transmitting diversity technology select STBC schemes.STBC has the advantages that simple in construction, decoding complexity is low, and decline can be effectively reduced by being combined with interleaving technology, improves systematic function.
3rd, based on above-mentioned one, described in 2 two, in code division multiple access system using TPC-HARQ/STBC methods of the present invention, originator is using TPC and STBC concatenated schemes, receiving end repeats code word to the reception data of the different transmitting antennas of correspondence and TPC that receive and carries out Chase merging, and carries out cascaded iteration between TPC decodings.Realize that Chase merges using Maximal ratio combiner algorithm in present pre-ferred embodiments.Document shows that the iterative decoding between TPC and Space Time Coding can obtain the coding gain outside a kind of diversity gain with relatively low system implementation complexity in [2].This point is also the most crucial thought of the present invention.
First advantage illustrates TPC-HARQ/STBC methods as a result of TPC schemes, for PCCC schemes, and its simple code structure and preferable decoding algorithm simplify volume, decoding device, accelerate decoding processing speed.Again because the software and hardware of TPC coding and decodings has more ripe technology to realize at present, thus make the present system complexity that relative reduction system is realized while preferable performance is obtained.
Second advantage illustrates that TPC-HARQ/STBC methods use STBC schemes, and antenna diversity is realized with a kind of simple and effective way, obtains good diversity gain.
3rd advantage illustrates that TPC-HARQ/STBC methods are reasonably cascaded channel coding with Space Time Coding, and by effectively merging algorithm and decoding algorithm while obtaining diversity gain and coding gain, and a kind of extra coding gain.
It can be seen that, using the present invention（TPC-HARQ/STBC) method and device, because TPC encoding schemes have code structure design simple, reduces decoding complexity and decoding delay, reduces the expense of receiving end buffer.Because this method combines STBC, so construction is easy, decode simple diversity technique again so that system obtains effective diversity gain.Further, since employing the iterative decoding between TPC and STBC, coding gain is improved.
Although above in association with accompanying drawing to the present invention have been described in detail, but the invention is not limited in this, according to the inventive method, the those of ordinary skill of same domain can easily realize the present invention, or improved by other means, it should it is all the present invention to know all any improvement for not departing from inventive concept
The scope of claim, therefore above embodiment is to illustrate the invention and not to limit the present invention.
Bibliography：
[1] J. Hagenauer, "Iterative Decoding of Binary Block and Convolutional Codes," in IEEE Trans, on Information Theory, vol. 42, No.2, March 1996.
[2] Yi Li, Yonghui Li, Yuezu Fan, " Iterative Decoding of Concatenated Space-Time Codes and Turbo Product Codes; " in International Conference on Telecommunications 2002, vol. 1, June 2002, pp.83-87.
Claims (16)
- Claim1. a kind of hybrid error correction method for wireless mobile communications, it is characterised in that：Start includes Turbo product codes coding and Space-Time Block Coding coding to the coding of input bit；Receiving end includes to the decoding for receiving data：Iterative decoding between space -time code and Turbo product codes；When decoding failure of the receiving end to reception data, receiving end feeds back negative receipt signal to originator；Start to repeat to send the negative receipt signal that same Turbo product code codewords answer receiving end to feed back back and forth, until receiving end acknowledges signal to originator feedback；When receiving end to receive data it is successfully decoded when, receiving end acknowledges to originator feedback and signal and receives this frame data, and decoding terminates.2. according to the method described in claim 1, it is characterised in that described originator includes Turbo product codes coding to the coding of input bit and Space-Time Block Coding coding refers to：The concatenated coding started to input bit progress Turbo product codes coding and Space-Time Block Coding coding；In coding, Turbo product code codings first are carried out to input bit, the data after being encoded to Turbo product codes are interleaved, Space-Time Block Coding coding is carried out to the data after intertexture.3. according to the method described in claim 1, it is characterised in that described receiving end includes the iterative decoding between space -time code and Turbo product codes to the decoding for receiving data and referred to：Receiving end repeats code word to the reception data of the different transmitting antennas of correspondence and Turbo product codes that receive and merged, and is iterated between the decoding of Turbo product codes, realizes joint decoding；In decoding, anti-interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings.4. according to the method described in claim 1, it is characterised in that described originator includes Turbo product codes coding to the coding of input bit and Kong Shi Fen Group codes coding refers to：The concatenated coding started to input bit progress Turbo product codes coding and Space-Time Block Coding coding；In coding, Turbo product code codings first are carried out to input bit, the data after being encoded to Turbo product codes are interleaved, Space-Time Block Coding coding is carried out to the data after intertexture；Described receiving end includes the iterative decoding between space -time code and Turbo product codes to the decoding for receiving data and referred to：Receiving end is to the reception data and Turbo products of the different transmitting antennas of correspondence received Code repeats code word and merged, and is iterated between the decoding of Turbo product codes, realizes joint decoding；In decoding, anti-interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings.5. method according to claim 4, it is characterised in that start includes to the process step of input bit：Originator carries out CRC codings to input bit；Bit after to being encoded through CRC carries out the concatenated coding of Turbo product codes coding and Space-Time Block Coding coding, i.e.,：Bit after first being encoded to CRC carries out Turbo product code codings, and the data after being encoded to Turbo product codes are interleaved, and Space-Time Block Coding coding is carried out to the data after intertexture；Data after to being encoded through Space-Time Block Coding are modulated and spread；Signal after modulation and spread spectrum is transmitted into fading channel.6. method according to claim 4, it is characterised in that receiving end includes to the process step for receiving data：Receiving end receives the signal transmitted through fading channel, and the processing of the signal progress despreading and demodulation to reception；Row decoding is entered to the data after despreading and demodulation, i.e.,：The reception data of the different transmitting antennas of correspondence and Turbo product codes received are repeated with code word and carries out Chase merging, and is iterated between the decoding of Turbo product codes, is realized：^ closes decoding, wherein：Anti- interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings；Data after decoding are carried out with CRC check, and output data.7. method according to claim 4, Qi Bu Sudden include：Originator carries out CRC codings to input bit；Bit after to being encoded through CRC carries out the concatenated coding of Turbo product codes coding and Space-Time Block Coding coding, i.e.,：Bit after first being encoded to CRC carries out Turbo product code codings, and the data after being encoded to Turbo product codes are interleaved, and Space-Time Block Coding coding is carried out to the data after intertexture；Data after to being encoded through Space-Time Block Coding are modulated and spread；Signal after modulation and spread spectrum is transmitted into fading channel；Receiving end receives the signal transmitted through fading channel, and carries out despreading and demodulation to the signal of reception Processing；Row decoding is entered to the data after despreading and demodulation, i.e.,：The reception data of the different transmitting antennas of correspondence and Turbo product codes received are repeated with code word and carries out Chase merging, and is iterated between the decoding of Turbo product codes, joint decoding is realized, wherein：Anti- interleaving treatment need to be passed through by carrying out the data of Turbo product code decodings；Data after decoding are carried out with CRC check, and output data.8. the method according to claim 6 or 7, it is characterised in that described Chase, which merges, to be merged using Maximal ratio combiner algorithm.9. method according to claim 7, Qi Bu Sudden can further comprise：When originator sends code word A first on two transmitting antennas simultaneously（Step 401);The code word A* through different declines received is carried out Chase with A** and merged by receiving end, and described decoding（Step 402);If through CRC check（Step 403) think that decoding is correct, then receive the frame data, acknowledged while feeding back to originator one（Bu Sudden 410)；If it was found that there is not repairable mistake in A* or A**, being stored in during receiving end Slow deposits, and feed back to one negative receipt request retransmission of originator（Step 404)；Originator is received after first negative receipt, retransmits code word A (step 405);A*, A** progress Maximal ratio combiner during receiving end deposits A*, A** for newly receiving and receiving end Slow obtains B* (step 406);B* is then sent into TPC decoders and carries out error correction（Step 407)；CRC check is carried out to the data after decoding again（Step 408)；If successfully decoded, the data frame is received（Bu Sudden 410)；If decoding failure, new A*, A** be also stored in during Slow is deposited with original A*, A**-rise wait ' treat to merge decoding next time, while negate receipt be fed back to originator requirement re-transmission（Step 409)；Above step continues up to the data frame and is correctly received.10. a kind of hybrid error correction device for wireless mobile communications, including：Emitter and reception device, it is characterised in that：Emitter at least includes Turbo product code encoders and Space-Time Block Coding The code device of encoder cascade, to be encoded to input bit；Reception device at least includes：The joint decoding device of Turbo product codes and Space-Time Block Coding, to enter row decoding to receiving data.11. device according to claim 10, it is characterised in that described Turbo product code encoders and the code device of Space-Time Block Coding encoder cascade include：Turbo product code encoders, interleaver, Space-Time Block Coding encoder；Wherein：Signal to be encoded is the input of Turbo product code encoders, and Turbo product code encoders are output as the input of interleaver, and interleaver is output as the data after the input of Space-Time Block Coding encoder, Space-Time Block Coding encoder exports coding.12. device according to claim 10, it is characterised in that described Turbo product codes and the joint decoding device of Space-Time Block Coding include：Combiner, anti-interleaver, Turbo product code decoders, wherein：The reception data of the different transmitting antennas of the correspondence received and Turbo product codes are repeated code word feeding combiner by reception device, are iterated between the output data of combiner and the output data of Turbo product code decoders, are realized joint decoding；In decoding, anti-interleaver is output as the input of Turbo product code decoders.13. device according to claim 10, it is characterised in that described Turbo product code encoders and the code device of Space-Time Block Coding encoder cascade include：Turbo product code encoders, interleaver, Space-Time Block Coding encoder；Wherein：Signal to be encoded is the input of Turbo product code encoders, and Turbo product code encoders are output as the input of interleaver, and interleaver is output as the data after the input of Space-Time Block Coding encoder, Space-Time Block Coding encoder exports coding；Described Turbo product codes and the joint decoding device of Space-Time Block Coding include：Combiner, anti-interleaver, Turbo product code decoders, wherein：The reception data of the different transmitting antennas of the correspondence received and Turbo product codes are repeated code word feeding combiner by reception device, are iterated between the output data of combiner and the output data of Turbo product code decoders, are realized joint decoding；In decoding, anti-interleaver is output as the input of Turbo product code decoders.14. device according to claim 13, it is characterised in that described emitter also includes：CRC encoders, modulation spread spectrum device；Wherein：Input bit is the input of CRC encoders；CRC encoders are output as the input of the concatenated coding device of Turbo product code encoders and Kong Shi Fen Group code coders；Data after coding spread the input of device for modulation；The modulation spread spectrum exportable data of device.15. device according to claim 13, it is characterised in that described reception device also includes：Despread-and-demodulation device, CRC decoders；Wherein：The signal transmitted through fading channel is the input of despread-and-demodulation device；Despread-and-demodulation device is output as the input of the joint decoding device of Turbo product codes and Space-Time Block Coding；Data after decoding are the input of CRC decoders；The exportable data of CRC decoders.16. device according to claim 13, it is characterised in that described emitter also includes：CRC encoders, modulation spread spectrum device；Wherein：Input bit is the input of CRC encoders；CRC encoders are output as the input of the concatenated coding device of Turbo product code encoders and Space-Time Block Coding encoder；Data after coding spread the input of device for modulation；Modulation spreads the exportable data of device to fading channel；Described reception device also includes：Despread-and-demodulation device, CRC decoders；Wherein：The signal transmitted through fading channel is the input of despread-and-demodulation device；Despread-and-demodulation device is output as the input of the joint decoding device of Turbo product codes and Space-Time Block Coding；Data after decoding are the input of CRC decoders；The exportable data of CRC decoders simultaneously can concatenated coding device of the feedback data to described Turbo product code encoders and Space-Time Block Coding encoder.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2002/000498 WO2004008680A1 (en) | 2002-07-15 | 2002-07-15 | Method and apparatus for hybrid error correction in mobile telecommunications |
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| CN02819173.0A Pending CN1561604A (en) | 2002-07-15 | 2002-07-15 | Method and apparatus for hybrid error correction in mobile telecommunications |
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| CN (1) | CN1561604A (en) |
| AU (1) | AU2002313866A1 (en) |
| WO (1) | WO2004008680A1 (en) |
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| FI20055234L (en) | 2005-05-18 | 2006-11-19 | Linde Ag | A method for cleaning recycled fibers and the use of acid in cleaning |
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| DE69527633T2 (en) * | 1995-10-23 | 2003-04-03 | Nokia Corp | Process for packet data transmission with hybrid FEC / ARQ Type II process |
| US5844918A (en) * | 1995-11-28 | 1998-12-01 | Sanyo Electric Co., Ltd. | Digital transmission/receiving method, digital communications method, and data receiving apparatus |
| EP1069722A2 (en) * | 1999-07-12 | 2001-01-17 | Hughes Electronics Corporation | Wireless communication system and method having a space-time architecture, and receiver for multi-user detection |
| AU5063899A (en) * | 1999-08-04 | 2001-03-05 | Atop Innovation S.P.A. | Improved mass memory |
| US6308294B1 (en) * | 1999-11-17 | 2001-10-23 | Motorola, Inc. | Adaptive hybrid ARQ using turbo code structure |
| CN100426717C (en) * | 2000-01-20 | 2008-10-15 | 北方电讯网络有限公司 | Hybrid ARQ schemes with soft combining in variable rate packet data transmission |
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2002
- 2002-07-15 CN CN02819173.0A patent/CN1561604A/en active Pending
- 2002-07-15 WO PCT/CN2002/000498 patent/WO2004008680A1/en not_active Application Discontinuation
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| AU2002313866A1 (en) | 2004-02-02 |
| WO2004008680A1 (en) | 2004-01-22 |
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