通信学报2023，Vol.44Issue(11)：173-182,10.DOI:10.11959/j.issn.1000-436x.2023212
RIS辅助的LDPC乘积码编码中继协作系统构建与性能分析
Establishment and performance analysis of RIS-assisted coded relay cooperation system based on LDPC product codes
摘要
Abstract
To pursue the ultra-reliable information transmission,the system which combined the reconfigurable intelli-gent surface(RIS)technology and coded relay cooperation technology was investigated.The RIS-assisted coded relay cooperation system model based on low density parity check(LDPC)product codes was established.Based on LDPC product codes,the information matrix was row-encoded by the source node and column-encoded by the relay node,re-spectively.An efficient joint iterative decoding algorithm was proposed.The two received signals at the destination were row-decoded and column-decoded iteratively to update the logarithmic likelihood ratios of information bits,and then the decoding decision was made.The closed-form solutions of the outage probability and the channel capacity with finite codelength were theoretically derived.Theoretical analysis and simulation results show that the proposed system obvi-ously outperforms the traditional coded relay cooperation.The more number of RIS elements,the more significant ad-vantage can be obtained.Simulation results also demonstrate that the channel capacity with finite codelength approaches the ideal channel capacity with the codelength of LDPC product codes increasing.关键词
RIS/LDPC乘积码/编码中继协作/中断概率/有限码长信道容量Key words
RIS/LDPC product code/coded relay cooperation/outage probability/channel capacity with finite codelength分类
信息技术与安全科学引用本文复制引用
张顺外,王金..RIS辅助的LDPC乘积码编码中继协作系统构建与性能分析[J].通信学报,2023,44(11):173-182,10.基金项目
江苏省高等学校自然科学研究基金资助项目(No.20KJB510034) （No.20KJB510034）
宽带无线通信与传感网技术教育部重点实验室开放研究基金资助项目(No.JZNY202112) The Natural Science Foundation of Jiangsu Higher Education Institutions(No.20KJB510034),The Open Re-search Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology,Ministry of Education(No.JZNY202112) （No.JZNY202112）
