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Algorithm Research & Explore
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2045-2048,2053

Decoding algorithm for polar codes based on polyline approximation operation

Ma Qiuran
Gao Hongfeng
School of Information Engineering, Henan University of Science & Technology, Luoyang Henan 471023, China

Abstract

The successive cancellation(SC) decoding method for polar codes under additive white Gaussian noise(AWGN) channels is performed in the log-likelihood ratio(LLR) domain. The calculation of the f function nodes use a sum-product algorithm based on hyperbolic tangent rules. This paper proposed a polyline approximation algorithm, which simplified the hyperbolic tangent function and the inverse hyperbolic tangent function into a 9-segment polyline function respectively. In order to obtain better FER performance under the polyline approximation algorithm, this algorithm added a 16 bit CRC to the information bits before encoding. Simulation experiments show that for the polar codes with code length N=1 024 and information bit length K=496, the proposed algorithm has better FER performance than the sum-product algorithm, and it reduces the decoding complexity and improves the decoding speed.

Publish Information

DOI: 10.19734/j.issn.1001-3695.2018.12.0928
Publish at: Application Research of Computers Printed Article, Vol. 37, 2020 No. 7
Section: Algorithm Research & Explore
Pages: 2045-2048,2053
Serial Number: 1001-3695(2020)07-025-2045-04

Publish History

[2020-07-05] Printed Article

Cite This Article

马秋然, 高宏峰. 一种基于折线逼近操作的极化码译码算法 [J]. 计算机应用研究, 2020, 37 (7): 2045-2048,2053. (Ma Qiuran, Gao Hongfeng. Decoding algorithm for polar codes based on polyline approximation operation [J]. Application Research of Computers, 2020, 37 (7): 2045-2048,2053. )

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  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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