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Parallel decoding method and device for polarization codes

A polar code and decoding technology, which is applied in the field of parallel decoding for polar codes, can solve the problem of low throughput of the decoder

Active Publication Date: 2017-05-31
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

LiBin and other scholars proposed the Parallel-SC algorithm in 2013 (ParallelDecoders of Polar Codes, Bin Li, Hui Shen, David Tse, [2016-8-25], heep: / / arxiv.org / abs / 1401.3753.), through Several SC decoders work at the same time, which can effectively reduce the decoding delay, but the SC algorithm used makes the throughput rate of the decoder lower

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  • Parallel decoding method and device for polarization codes

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Embodiment Construction

[0089] In this embodiment, the proposed parallel polar code decoding method, such as Figure 9 shown, the specific steps are as follows:

[0090] In this embodiment, the code length N=1024, the code rate R=0.5; the location information

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Abstract

The invention discloses a parallel decoding method and device for polarization codes, belongs to the field of wireless communication, and particularly relates to a parallel decoding method for polarization codes. Based on the defect of high decoding delay of a Fast-SSC algorithm, the invention provides a parallel quick method, two parallel Fast-SSC decoders are adopted, channel information is divided into two parts during decoding, and decoding is performed by the two parallel decoders, so that the decoding delay of the Fast-SSC algorithm is effectively reduced. The method has the same bit error rate as the Fast-SSC algorithm, but is faster in decoding speed than the Fast-SSC algorithm; and when the two Fast-SSC decoders are parallel, the parallelism is improved by about 40% over the Fast-SSC algorithm.

Description

technical field [0001] The invention belongs to the field of wireless communication, and particularly relates to a parallel decoding method for polar codes. Background technique [0002] Polar code is currently the only encoding method that can prove that it can achieve channel capacity through strict mathematical methods, and is a strong competitor of the 5G standard. After Arikan proposed the theory of channel polarization (Channel polarization: Amethod for constructing capacity-achieving codes, Arikan E., IEEE International Symposium on Information Theory (ISIT), 2008: 1173-1177.) in 2008, he proposed it in 2009. SC (Successive-Cancellation) decoding algorithm (Channel polarization: A method for constructing capacity-achieving codes for symmetric binary-input memoryless channels, Arikan E., IEEE Trans. Inf. Theory, 55(7), 2009:3051-3073.) , the nature of serial decoding of SC algorithm leads to its shortcomings of low throughput and high decoding delay, so the research o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/09H03M13/13
CPCH03M13/09H03M13/13H03M13/6561
Inventor 张小军高健曾庆田张德学崔建明董雁飞隋荣全张作文陈晨李俊
Owner SHANDONG UNIV OF SCI & TECH
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