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Augmented decoders for LDPC codes

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Rigby, AR, Olivier, JC ORCID: 0000-0002-7703-6357, Myburgh, HC, Xiao, C and Salmon, BP ORCID: 0000-0001-5722-3414 2018 , 'Augmented decoders for LDPC codes' , EURASIP Journal on Wireless Communications and Networking , pp. 1-9 , doi: 10.1186/s13638-018-1203-5.

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Abstract

The performance of a belief propagation decoder for low-density parity-check codes is limited by the presence oftrapping sets in the code’s graph. This leads to an error floor at higher signal-to-noise ratios. We propose the use of anaugmented decoder which operates by iteratively decoding on a set of graphs which have a subset of repeatedcheck nodes. We compare the augmented decoder to other modified belief propagation decoders that have beenpresented in the literature. We show that for all the codes considered, the augmented decoder yields the best frameerror rate in the error floor region.

Item Type: Article
Authors/Creators:Rigby, AR and Olivier, JC and Myburgh, HC and Xiao, C and Salmon, BP
Keywords: LDPC codes, BP decoding, trapping sets, error floor mitigation
Journal or Publication Title: EURASIP Journal on Wireless Communications and Networking
Publisher: SpringerOpen
ISSN: 1687-1499
DOI / ID Number: 10.1186/s13638-018-1203-5
Copyright Information:

Copyright 2018 the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

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