Design of Serially Concatenated Two-Level Polar Coded Modulation System with Low-Complexity  

作　　者：Zhou Lin Liao Guojun Xu Lei An Ran Xie Xianzhong Wang Xi 

机构地区：[1]Xiamen Key Laboratory of Mobile Multimedia Communications,College of Information Science and Engineering,Huaqiao University,Xiamen 361021,China [2]College of Computer Science and Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [3]China Mobile Communications Group Fujian Co.,Ltd.Fuzhou,Fujian 350003,China

出　　处：《China Communications》2025年第1期102-110,共9页中国通信(英文版)

基　　金：supported by the External Cooperation Program of Science and Technology of Fujian Province,China(2024I0016);the Fundamental Research Funds for the Central Universities(ZQN-1005).

摘　　要：Multilevel coding(MLC)is a commonly used polar coded modulation scheme,but challenging to implement in engineering due to its high complexity and long decoding delay for high-order modulations.To address these limitations,a novel two-level serially concatenated MLC scheme,in which the bitlevels with similar reliability are bundled and transmitted together,is proposed.The proposed scheme hierarchically protects the two bit-level sets:the bitlevel sets at the higher level are sufficiently reliable and do not require excessive resources for protection,whereas only the bit-level sets at the lower level are encoded by polar codes.The proposed scheme has the advantages of low power consumption,low delay and high reliability.Moreover,an optimized constellation signal labeling rule that can enhance the performance is proposed.Finally,the superiority of the proposed scheme is validated through the theoretical analysis and simulation results.Compared with the bit interleaving coding modulation(BICM)scheme,under 256-quadrature amplitude modulation(QAM),the proposed scheme attains a performance gain of 1.0 dB while reducing the decoding complexity by 54.55%.

关 键 词：bit-interleaved coded modulation high-order modulation multilevel coding polar codes 

分 类 号：TN911.3[电子电信—通信与信息系统]