Research and Implementation of High-Efficiency and Low-Complexity LDPC Coding Algorithm

In this work, we proposed a high-efficiency and low-complexity encoding algorithm and its corresponding implementation structure during the design and implementation process of an LDPC encoder and decoder. This proposal was derived from extensive research on and analysis of standard encoding algorit...

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Bibliographic Details
Published in:Electronics (Basel) Vol. 12; no. 17; p. 3696
Main Authors: Liao, Xiong, Guo, Junxiong, Luo, Zhenghua, Xu, Yanghui, Chu, Yingjun
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.09.2023
Subjects:
Algorithms
Binary phase shift keying
Bit error rate
Block codes
Codec
Coders
Codes
Coding
Coding theory
Complexity
Decoding
Efficiency
Iterative methods
Low density parity check codes
Phase modulation
Random noise
Sparsity
China
ISSN:2079-9292, 2079-9292
Online Access:Get full text
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Summary:In this work, we proposed a high-efficiency and low-complexity encoding algorithm and its corresponding implementation structure during the design and implementation process of an LDPC encoder and decoder. This proposal was derived from extensive research on and analysis of standard encoding algorithms and recursive iterative encoding algorithms, specifically targeting the problem of high computational complexity in encoding algorithms. Subsequently, we combined binary phase-shift keying modulation mode and additive white Gaussian noise channel transmission with the min-sum decoding algorithm to realize the (1536, 1024) LDPC codec. This codec was uniformly quantized with a (6, 2) configuration, executed eight iterations, and achieved a 2/3 code rate in the IEEE802.16e standard. At the bit error rate (BER) of 10−5, the codec’s BER obtained by the proposed coding algorithm was about 0.25 dB lower than the recursive-iterative coding algorithm and was about 1.25 dB lower than the standard coding algorithm, which confirms the correctness, effectiveness, and feasibility of the proposed algorithm.
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ISSN:2079-9292
2079-9292
DOI:10.3390/electronics12173696