An Even/Odd Error Detection Based Low-Complexity Chase Decoding for Low-Latency RS Decoder Design

Jinho Jeong, Dongyeob Shin, Wongyu Shin, Jongsun Park

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    This letter presents a modified low-complexity chase (LCC) algorithm, where a fewer number of vectors can be tested with minor error correction performance degradation. The proposed LCC decoding pre-determines whether the number of errors in the received codeword is even or odd, and it processes only necessary test vectors. As a result, the number of test vectors can be reduced by half compared to the conventional LCC decoding. The Reed-Solomon (255,239) decoder with the proposed LCC algorithm has been implemented using 65nm CMOS process. The hardware implementation results show that the proposed decoder shows 48.5% reduced latency with 0.06 dB of coding gain decrease at $\mathbf {10^{-6}}$ codeword error rate compared to the state-of-the-art LCC decoder.

    Original languageEnglish
    Article number9336031
    Pages (from-to)1505-1509
    Number of pages5
    JournalIEEE Communications Letters
    Volume25
    Issue number5
    DOIs
    Publication statusPublished - 2021 May

    Bibliographical note

    Publisher Copyright:
    © 1997-2012 IEEE.

    Keywords

    • Reed-Solomon (RS) codes
    • algebraic soft-decision decoding (ASD)
    • latency
    • low-complexity chase (LCC)

    ASJC Scopus subject areas

    • Modelling and Simulation
    • Computer Science Applications
    • Electrical and Electronic Engineering

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