双耦合极化码及其编码调制方案  

Dual Coupled Polar Coded Modulation

作　　者：陈皓炜 蔡穗华 韦宝典 马啸[1] CHEN Hao-wei;CAI Sui-hua;WEI Bao-dian;MA Xiao(School of Computer Science and Engineering,Sun Yat-sen University,Guangzhou,Guangdong 510006,China)

机构地区：[1]中山大学计算机学院,广东广州510006

出　　处：《电子学报》2022年第8期1917-1924,共8页Acta Electronica Sinica

基　　金：国家重点研发计划(No.2020YFB1807100);广东省基础与应用基础研究基金(No.2020A1515010687);广州市基础研究计划基础与应用基础研究项目(No.202102080322);国家自然科学基金(No.61972431)。

摘　　要：本文提出了双耦合极化码(Dual Coupled Polar,DC-Polar)的方案,并推导了其性能下界.基于此,本文考虑高阶调制的情况,给出了采用双耦合极化码的比特交织编码调制(Bit-Interleaved Coded Modulation,BICM)方案.为了解决高阶调制下码长匹配的问题,本文基于多层编码调制的思想提出了双层耦合极化编码调制(DC-Polar TwoLayer Coding,DC-Polar-TLC)方案,其优点在于码长灵活,不需要使用删余或截短等技术.仿真结果显示,双层耦合极化编码调制方案具有较好性能,在64QAM调制下,该方案与使用比特交织编码调制的CRC辅助极化码相比具有约0.6 dB的增益.In this paper,the dual coupled polar(DC-Polar)code is proposed and its lower bound is derived.Based on this,DC-Polar code combined with bit-interleaved coded modulation(BICM)is presented for high-order constellations.To overcome the rate matching problem,a new coded modulation scheme called DC-Polar two-layer coding(DC-Polar-TLC)is proposed.The advantage of this scheme is that the code length can be adjusted flexibly without applying puncturing or shortening methods.It is shown by numerical simulations that the proposed DC-Polar-TLC scheme has good performance.The presented scheme can achieve about 0.6 dB performance gains compared to the bit-interleaved coded modulation scheme with CRC-aided polar code for the case of 64QAM.

关 键 词：比特交织编码调制 双耦合极化码 精灵辅助界 高阶调制 双层编码调制 

分 类 号：TN911.22[电子电信—通信与信息系统]