Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum

LIU Jian-quan1; XU You-yun1; CAI Yue-ming1

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Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum

更新时间：2024-10-14

- Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum
- Vol. 30, Issue 9, Pages: 60-68(2009)
- 作者机构：
  
  1. 解放军理工大学通信工程学院
  2. 上海交通大学电子工程系
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.22
- Published：2009
- 稿件说明：
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LIU Jian-quan1, XU You-yun1, CAI Yue-ming1. Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum[J]. 2009, 30(9): 60-68.
DOI：

LIU Jian-quan1, XU You-yun1, CAI Yue-ming1. Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum[J]. 2009, 30(9): 60-68. DOI：

摘要

通过分析置信传播译码算法失败时错误比特位的软值分布

提出了一种基于伴随向量和的软值翻转译码算法

该算法将伴随向量和中校验方程错误次数转化为错误比特位分布参数

在某个迭代次数时通过一种选择准则将部分比特位软值仅仅翻转一次

对于存在较多相关行的LDPC码

在几乎不增加译码复杂度(仅为O(N))的同时

较大程度上降低了误帧率。

Abstract

By analyzing the soft value distribution while belief propagation defeated

a soft value flipping decoding algo-rithm based on adjoint vectors sum was presented.With translating the error times of check equation which obtained by adjoint vectors sum into error bits distribution parameter and flipping some bit nodes soft value only once at certain itera-tion by a selection regulation

the frame error rate of the proposed algorithm for LDPC codes which have much more correlative rows can be reduced to a larger extent without complexity increase nearly（only O（N））.

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Related Author

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Hua PENG

Ke-xian GONG

Ze-liang CHEN

Ke-xiang MA

Ji-cheng SUN

Meng WANG

Yu-ming ZHANG

Related Institution

School of Information Systems Engineering,PLA Information Engineering University

State Key Lab. of Integrated Service Networks, Xidian University

State Key Lab of Integrated Services Networks,Xidian University

Science and Technology on Information Transmission and Dissemination in Communication Networks Lab,CETC No.54 Research Institute

State Kay Lab.of Integrated Service Networks,Xidian Univ.

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