›› 2013, Vol. 26 ›› Issue (8): 130-.

• 论文 • 上一篇    下一篇

影响多进制LDPC码译码性能因素研究

张晗,刁鸣   

  1. (哈尔滨工程大学 信息与通信工程学院,黑龙江 哈尔滨 150001)
  • 出版日期:2013-08-15 发布日期:2013-09-25
  • 作者简介:张晗(1986—),男,硕士研究生。研究方向:宽带信号处理。E-mail:hanzhanghag@163.com

Research into Non-binary LDPC Decoding Performance Factors

ZHANG Han,DIAO Ming   

  1. (College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)
  • Online:2013-08-15 Published:2013-09-25

摘要:

多进制LDPC码是将二进制LDPC码推广到有限域GF(q),其校验矩阵的元素不再是0和1,而是集合(0,1,2,…,q-1),译码仍然采用高效的基于置信度传播的迭代译码算法。文中主要阐述了准循环多进制LDPC码(QC-LDPC)校验矩阵的构造以及最小和译码算法的原理,然后在高斯白噪声信道(AWGN)中,用Matlab了仿真不同条件下LDPC码的译码性能,比较分析了影响多进制LDPC码译码性能的因素。

关键词: 多进制LDPC码;准循环;置信传播;迭代译码;最小和译码

Abstract:

The non-binary LDPC is the promotion to the finite GF(q) of binary LDPC codes.The parity check matrix elements is no longer 0 and 1,but collections (0,1,2,…,q-1),while the decoding still uses the efficient iterative decoding based on belief propagation algorithm.This paper focuses on the check matrix of structure of the quasi-cyclic LDPC codes (QC-LDPC) as well as the min-sum decoding algorithm.Then the LDPC codes decoding performance is simulated under different conditions in white Gaussian noise channel (AWGN) with Matlab.Finally,the impact of non-binary LDPC Decoding performance factors is analyzed.

Key words: non binary low density parity code;quasi cyclic;belief propagation;iterative decoding;min sum decoding

中图分类号: 

  • TN929.1