An anti-phase ambiguity LDPC decoding algorithm in satellite burst communications

TIAN Jin; WANG Yu-han; MA Zheng-xin

doi:10.13873/j.1000-97872012.12.025

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An anti-phase ambiguity LDPC decoding algorithm in satellite burst communications

更新时间：2025-09-11

- An anti-phase ambiguity LDPC decoding algorithm in satellite burst communications
- Vol. 31, Issue 12, Pages: 140-142(2012)
- 作者机构：
  
  清华大学电子工程系
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.12.025
  CLC： TN927.2;TN911.22
- Published：2012
- 稿件说明：
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[1]田进,王毓琀,马正新.一种卫星突发通信中抗相位模糊LDPC译码算法[J].传感器与微系统,2012,31(12):140-142.

TIAN Jin, WANG Yu-han, MA Zheng-xin. An anti-phase ambiguity LDPC decoding algorithm in satellite burst communications[J]. 2012, 31(12): 140-142.
[1]田进,王毓琀,马正新.一种卫星突发通信中抗相位模糊LDPC译码算法[J].传感器与微系统,2012,31(12):140-142. DOI： 10.13873/j.1000-97872012.12.025.

TIAN Jin, WANG Yu-han, MA Zheng-xin. An anti-phase ambiguity LDPC decoding algorithm in satellite burst communications[J]. 2012, 31(12): 140-142. DOI： 10.13873/j.1000-97872012.12.025.

摘要

低密度奇偶校验（LDPC）码是一种性能接近香农极限的线性分组码

其核心译码算法是置信传播（BP）译码。基于BP译码迭代次数与相位模糊度关系

提出一种抗相位模糊的LDPC改进型译码算法。仿真结果表明:在一定信噪比条件下

数据包内部发生一次相位翻转时

该算法可以有效判断翻转位置

并准确译码。

Abstract

Low-density parity check（LDPC） code is a type of linear block code with good performance close to Shannon limit and its core algorithm is belief propagation（BP） decoding.Based on the relation between phase ambiguity and the iteration numbers of BP decoding

a type of improved LDPC decoding algorithm which can anti-phase ambiguity is proposed.Simulation results demonstrate this algorithm can effectively judge flipping position and accurately decode

especially when the signal experiences one phase flip.

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Related Author

YANG Zhi-liang

LI Jin-hua

Related Institution

School of Information and Communication Engineering,North University of China

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