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

Authors
Jeong, J.Shin, D.Shin, W.Park, J.
Issue Date
5월-2021
Publisher
Institute of Electrical and Electronics Engineers Inc.
Keywords
algebraic soft-decision decoding (ASD); latency; low-complexity chase (LCC); Reed-Solomon (RS) codes
Citation
IEEE Communications Letters, v.25, no.5, pp.1505 - 1509
Indexed
SCIE
SCOPUS
Journal Title
IEEE Communications Letters
Volume
25
Number
5
Start Page
1505
End Page
1509
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/128922
DOI
10.1109/LCOMM.2021.3054753
ISSN
1089-7798
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. © 1997-2012 IEEE.
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