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An Even/Odd Error Detection Based Low-Complexity Chase Decoding for Low-Latency RS Decoder Design
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DOI：10.1109/LCOMM.2021.3054753.png)
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摘要
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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 10(-6) codeword error rate compared to the state-of-the-art LCC decoder.
Keyword:
Decoding
Reliability
Maximum likelihood decoding
Encoding
Hardware
Error correction
Error probability
Reed-Solomon (RS) codes
algebraic soft-decision decoding (ASD)
low-complexity chase (LCC)
latency
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4.4
论文数:
1.3W
被引数:
2.2W
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