双耦合极化码及其编码调制方案

doi:10.12263/DZXB.20211030

电子学报 ›› 2022, Vol. 50 ›› Issue (8): 1917-1924.DOI: 10.12263/DZXB.20211030

双耦合极化码及其编码调制方案

陈皓炜, 蔡穗华, 韦宝典, 马啸

中山大学计算机学院，广东广州 510006

收稿日期:2021-08-01 修回日期:2022-04-16 出版日期:2022-08-25
- 通讯作者:
- 韦宝典
- 作者简介:
- 陈皓炜男,1998年10月出生，江西赣州人.2016年毕业于西安电子科技大学通信工程学院，2020年进入中山大学计算机学院.现为硕士生，从事极化码编码调制相关研究.E-mail: chenhw39@mail2.sysu.edu.cn
  蔡穗华男,1988年12月出生，广东广州人.2019年博士毕业于中山大学信息与通信工程专业，现在中山大学计算机学院从事博士后工作，主要研究方向为信息论与信道编码，及其在光纤通信、无线通信中的应用.E-mail: caish23@mail.sysu.edu.cn
  韦宝典男,1976年5月出生，广西贵港人.副教授，硕士生导师.2004年毕业于西安电子科技大学获工学博士学位.现为中山大学计算机学院教师，从事信息理论与技术方面的有关研究.E-mail: weibd@mail.sysu.edu.cn
  马啸男,1968年10月出生，河南焦作人.教授、博士生导师.2000年毕业于西安电子科技大学，其后在美国哈佛大学和香港城市大学从事研究工作.现任职于中山大学计算机学院，主要研究方向为信息与编码理论、编码调制技术、无线通信、光通信等.E-mail: maxiao@mail.sysu.edu.cn
- 基金资助:
- 国家重点研发计划 (2020YFB1807100); 广东省基础与应用基础研究基金 (2020A1515010687); 广州市基础研究计划基础与应用基础研究项目 (202102080322); 国家自然科学基金 (61972431)

Dual Coupled Polar Coded Modulation

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

Received:2021-08-01 Revised:2022-04-16 Online:2022-08-25 Published:2022-09-08
- Corresponding author:
- WEI Bao-dian

摘要/Abstract

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 Two-Layer 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.

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

Abstract:

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.

Key words: bit-interleaved coded modulation(BICM), dual coupled polar code, genie-aided bound, high-order modulation, two-layer coding

中图分类号:

TN911.22

陈皓炜, 蔡穗华, 韦宝典, 马啸. 双耦合极化码及其编码调制方案[J]. 电子学报, 2022, 50(8): 1917-1924.

CHEN Hao-wei, CAI Sui-hua, WEI Bao-dian, MA Xiao. Dual Coupled Polar Coded Modulation[J]. Acta Electronica Sinica, 2022, 50(8): 1917-1924.

图/表 13

图1 双耦合极化码的编码框图

图2 双耦合极化码在不同参数K0,K1构造下的精灵辅助界

图3 双耦合极化码在不同参数K0,?K1构造下的性能及其界

图4 双耦合极化码与其他码的性能比较

图5 双耦合极化码的BICM系统框架

图6 16QAM调制下BICM系统中双耦合极化码在不同参数K0,?K1构造下的精灵辅助界

图7 16QAM调制下BICM系统中双耦合极化码在参数23,?41构造下的性能及其界,其中PAC和CA-Polar码均由参数N=128,K=64构造,SCL译码器参数为L=128

图8 64QAM调制下BICM系统中双耦合极化码在不同参数K0,?K1构造下的精灵辅助界

图9 64QAM调制下BICM系统中双耦合极化码在不同参数K0,?K1构造下的性能及其界,其中CA-Polar码由参数N=256,M=192,K=96构造,SCL译码器参数为L=128,CRC生成多项式为gx=x8+x5+x4+1

图10 16QAM调制下的DC-Polar-TLC系统框架

图11 64QAM调制下的DC-Polar-TLC系统框架

图12 16QAM调制下DC-Polar-TLC系统在参数19,?45构造下的性能及其界

图13 64QAM调制下BICM系统和DC-Polar-TLC系统性能比较

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双耦合极化码及其编码调制方案

Dual Coupled Polar Coded Modulation

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