高斯白噪声信道下SC-LDPC码的结构设计

doi:10.13190/j.jbupt.2019-087

北京邮电大学学报 ›› 2020, Vol. 43 ›› Issue (1): 35-39.doi: 10.13190/j.jbupt.2019-087

高斯白噪声信道下SC-LDPC码的结构设计

张亚坤¹, 张娅妹¹, 周林^1,2, 贺玉成^1,2

1. 华侨大学厦门市移动多媒体通信重点实验室, 厦门 361021;
2. 西安电子科技大学综合业务网理论及关键技术国家重点实验室, 西安 710071

收稿日期:2019-05-24 出版日期:2020-02-28 发布日期:2020-03-27
通讯作者: 周林(1982-),男,副教授,硕士生导师,E-mail:linzhou@hqu.edu.cn. E-mail:linzhou@hqu.edu.cn
作者简介:张亚坤(1992-),女,硕士生,E-mail:1592473187@qq.com.
基金资助:
国家自然科学基金项目（61901182，61302095）；福建省自然科学基金项目（2018J01096）；泉州市科技计划项目（2018C108R）；华侨大学研究生科研创新能力培育计划项目（17013082035）

Structure Design of SC-LDPC Code over Additive White Gaussian Noise Channel

ZHANG Ya-kun¹, ZHANG Ya-mei¹, ZHOU Lin^1,2, HE Yu-cheng^1,2

1. Xiamen Key Laboratory of Mobile Multimedia Communications, National Huaqiao University, Xiamen 361021, China;
2. State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an 710071, China

Received:2019-05-24 Online:2020-02-28 Published:2020-03-27
Supported by:

摘要/Abstract

摘要： 为了优化空间耦合低密度奇偶校验（SC-LDPC）码在加性高斯白噪声信道下的性能，改变了其边缘扩展规则，将规则SC-LDPC码原模图上变量节点的边连接到与其相对应的前一个位置的校验节点上，提出了一种新型的空间耦合结构.对其基矩阵、码率、度分布及译码复杂度进行分析，结果表明，与传统的SC-LDPC码相比，链长相同时，新结构的码率有所提高，校验节点的度分布变大.最后通过BP译码验证了提出的空间耦合新结构译码性能的优越性.

关键词: 原模图, 空间耦合低密度奇偶检验码, 加性高斯白噪声信道

Abstract: In order to optimize the performance of spatially coupled low density parity check (SC-LDPC) codes over the additive white gaussian noise channel, a novel spatial coupling structure was proposed by changing the edge spreading rules, the edges of the variable nodes were connected to the check nodes of the previous position. Basis matrix, rate, degree distribution and computational complexity were analyzed and the results show that the rate of the novel structure is promoted with the degree distribution of check nodes become larger. Finally, the performance of the proposed novel structure is verified by BP decoding.

Key words: protograph, spatially coupled low density parity check code, additive white gaussian noise channel

中图分类号:

TN911.22

张亚坤, 张娅妹, 周林, 贺玉成. 高斯白噪声信道下SC-LDPC码的结构设计[J]. 北京邮电大学学报, 2020, 43(1): 35-39.

ZHANG Ya-kun, ZHANG Ya-mei, ZHOU Lin, HE Yu-cheng. Structure Design of SC-LDPC Code over Additive White Gaussian Noise Channel[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(1): 35-39.

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高斯白噪声信道下SC-LDPC码的结构设计

Structure Design of SC-LDPC Code over Additive White Gaussian Noise Channel

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