Stopping Criterion for LDPC Decoder based on PEXIT Chart Analysis

Taehyun Kim, Joo Sung Park, Jun Heo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, an early stopping scheme is proposed for low-density parity-check (LDPC) decoders. The proposed scheme predicts that the LDPC decoder will not be able to correct errors and then stops the iterative decoding process before reaching the maximum number of iterations. When the number of parity checks unsatisfied at both the l-th and the (l-T)-th decoding iterations is larger than a threshold, the decoder with the proposed scheme predicts that the decoding of the codeword is failed at the last iteration. Protograph-based extrinsic information transfer (PEXIT) chart analysis is used to determine the threshold. Simulation results show that the LDPC decoder can correct errors with the lower average number of iterations by using both the conventional syndrome test and proposed scheme.

Original languageEnglish
Title of host publication2020 IEEE Wireless Communications and Networking Conference, WCNC 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728131061
DOIs
Publication statusPublished - 2020 May
Externally publishedYes
Event2020 IEEE Wireless Communications and Networking Conference, WCNC 2020 - Seoul, Korea, Republic of
Duration: 2020 May 252020 May 28

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2020-May
ISSN (Print)1525-3511

Conference

Conference2020 IEEE Wireless Communications and Networking Conference, WCNC 2020
CountryKorea, Republic of
CitySeoul
Period20/5/2520/5/28

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kim, T., Park, J. S., & Heo, J. (2020). Stopping Criterion for LDPC Decoder based on PEXIT Chart Analysis. In 2020 IEEE Wireless Communications and Networking Conference, WCNC 2020 - Proceedings [9120774] (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2020-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC45663.2020.9120774