电子学报2025，Vol.53Issue(9)：3192-3201,10.DOI:10.12263/DZXB.20250582
双向叠加BCH码及其高性能译码
TPST-BCH Coding Scheme with High-Performance Decoding
摘要
Abstract
This work proposes a novel coding and low-complexity decoding scheme based on BCH codes to meet the requirements of high-reliability and low-latency communication(HRLLC)applications.In the proposed design,BCH codes are used as component codes within a twisted-pair superposition transmission(TPST)framework,resulting in TPST-BCH codes.The upper-layer BCH codeword undergoes a random transformation before being superimposed onto the lower-layer codeword,and the resulting signal is further interleaved and fed back to the upper layer,enabling code length extension and reliability enhancement.For decoding,a serial interference cancellation strategy is developed,where ordered statistics de-coding with local constraints(LC-OSD)is first applied to generate a list of candidates for the upper layer.Given an upper-layer candidate,LC-OSD decoding is then performed on the lower-layer codeword,and the candidate with the highest poste-rior probability is ultimately selected as the decoding output.To further reduce complexity,an early termination mechanism is introduced,including intra-layer early termination within LC-OSD and cross-layer early termination across decoding stag-es.Simulation results show that the proposed early termination design significantly reduces the average number of searches with negligible performance loss.Compared to existing coding schemes,the proposed TPST-BCH codes(with the proposed decoding algorithm)demonstrate superior frame error rate(FER)performance over BCH codes of the same code length and rate(decoded with the LC-OSD algorithm)and 5G LDPC codes(decoded with belief propagation decoding).They achieve comparable or slightly better FER performance than 5G Polar codes(decoded with successive cancellation list decoding),while exhibiting lower computational complexity and decoding latency relative to 5G Polar codes in the moderate-to-high SNR regions.关键词
信道编码/BCH码/双向叠加传输/局部约束顺序统计译码Key words
channel coding/BCH codes/twisted-pair superposition transmission(TPST)/ordered statistics decoding with local constraints(LC-OSD)分类
信息技术与安全科学引用本文复制引用
钟卓宏,王千帆,王义文,宋林琦,马啸..双向叠加BCH码及其高性能译码[J].电子学报,2025,53(9):3192-3201,10.基金项目
国家重点研发计划(No.2021YFA1000500) （No.2021YFA1000500）
国家自然科学基金(No.62301617,No.62471506,No.62371411) （No.62301617,No.62471506,No.62371411）
广东省自然科学基金(面上项目)(No.2023A1515011056,No.2025A1515011650) （面上项目）
港澳"青年科技人才托举工程"项目(No.QT-2025-048) National Key Research and Development Program of China(No.2021YFA1000500) （No.QT-2025-048）
National Natural Science Foundation of China(No.62301617,No.62471506,No.62371411) （No.62301617,No.62471506,No.62371411）
Guangdong Basic and Applied Basic Research Foundation(No.2023A1515011056,No.2025A1515011650) （No.2023A1515011056,No.2025A1515011650）
Young Elite Scientists Sponsorship Program(Hong Kong and Macao)by Guangzhou Association for Science and Technology(No.QT-2025-048) （Hong Kong and Macao）
