High-performance low-complexity decoding method of block product codes TPC (Turbo Product Code)
A low-complexity, product code technology, applied in the field of data encoding and decoding systems, to achieve the effects of simplified calculation complexity, high complexity, and simplified calculation structure
Inactive Publication Date: 2015-03-25
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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[0024] The technical problem to be solved in the present invention is to avoid the deficiencies of the prior art and to propose a decoding method with greatly reduced complexity and performance close to optimal block product code TPC
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[0061] Further details will be given below in conjunction with the preferred embodiments shown in the accompanying drawings.
[0062] The present invention adopts an innovative combination covering method, simplifies the matrix processing calculation structure in the FBA decoder structure proposed in reference (7), provides near-optimal performance, and reduces both the decoder structure and the amount of calculation Complexity.
[0063] The present invention is based on a completely new structure. Compared with other methods, it is either greatly simplified to maintain the same or even better performance, or greatly improves the performance under the condition of basically the same complexity. The invention can lead to higher speed, lower power consumption and higher performance chip or IP core products. A large number of practical applications are possible in wireless communication and wired communication systems. In the wireless market, it is expected that the transmissi...
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The invention discloses a high-performance low-complexity decoding method of block product codes TPC (Turbo Product Code), which is based on a TPC decoder comprising a BLLR (Bit Log Likelihood Ratio) calculation module, a synchronization word detection module, a diagonal interleaving resolution module and a soft-input-soft-output iterative decoding module. The decoding method disclosed by the invention includes the three steps of: received symbol sorting according to the degree of reliability, systemic searching and soft outputting and computing. Compared with other methods, the decoding method disclosed by the invention simplifies the procedure while the same or even better performance is remained or the performance is greatly improved under the condition of the same complexity; and the decoding method results in chips or IP (Intellectual Property) core products with higher rate, lower power consumption and higher performance. The decoding method can be widely applied in wireless communication systems and wire communication systems. Compared with conventional decoders, the TPC decoder used in the decoding method is improved in the aspects of structure and performance, and compared with the decoders with optimal performances, the TPC decoder used in the decoding method has the advantages that the complexity is greatly reduced.
Description
technical field [0001] The present invention relates to a data encoding and decoding system and its implementing method, in particular to the encoding and decoding system and its implementing method of a block product code TPC used in a satellite communication system and a space communication system. Background technique [0002] Packet product code, abbreviated as TPC, namely Turbo Product Code, is one of the three high-performance channel coding technologies alongside Turbo code and LDPC code. TPC has been successfully applied in satellite communication and space communication systems. Its performance is also comparable to the other two technologies, and it also has some unique advantages, such as a small number of iterations, only 4-6 times to converge, no bit error rate curve flattening effect, and adapting to variable-length data frames. Error correction protection, etc. [0003] For the decoding of TPC, there have been many technologies, such as the Chase-II-base...
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IPC IPC(8): H03M13/29
CPCY02B60/50
Inventor 方军
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN