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

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

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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