Toward Terabits-per-second Communications: Low-Complexity Parallel Decoding of G_N-Coset Codes [article]

Xianbin Wang and Jiajie Tong and Huazi Zhang and Shengchen Dai and Rong Li and Jun Wang
2020 arXiv   pre-print
Recently, a parallel decoding framework of G_N-coset codes was proposed. High throughput is achieved by decoding the independent component polar codes in parallel. Various algorithms can be employed to decode these component codes, enabling a flexible throughput-performance tradeoff. In this work, we adopt SC as the component decoders to achieve the highest-throughput end of the tradeoff. The benefits over soft-output component decoders are reduced complexity and simpler (binary)
more » ... s among component decoders. To reduce performance degradation, we integrate an error detector and a log-likelihood ratio (LLR) generator into each component decoder. The LLR generator, specifically the damping factors therein, is designed by a genetic algorithm. This low-complexity design can achieve an area efficiency of 533Gbps/mm^2 under 7nm technology.
arXiv:2004.09907v1 fatcat:7mdpyyfi4vbpjeszxgpe4xlcme