非高斯信道LDPC译码性能的改进研究  

Research of Performance Improvement of LDPC Coding and Decoding in Non-gaussian Noise

作　　者：彭金海[1] 董颖辉[1] 

机构地区：[1]海军工程大学电气工程学院,武汉430033

出　　处：《舰船电子工程》2007年第2期146-149,共4页Ship Electronic Engineering

摘　　要：无线电通信系统很少只受到真正意义上高斯噪声的干扰,因此,线性接收机的性能就会因为这些非高斯干扰而严重下降。讨论非高斯噪声信道中LDPC译码问题,在非高斯噪声信道中,选取一种优化的非线性处理器。计算机仿真表明,在脉冲环境中,通过非线性处理器后的LDPC译码的BER性能有了较大的改善。Wireless communication systems are seldom interfered by true white noise,so the linear receiving systems suffer severely degradation of the performance due to the non-gaussian interfences. In this paper,we deal with the decoding for LDPC code over non-gaussian channel.We propose a nonlinear processor for LDPC code optimized in non-gaussian channel.In addition,we show the BER(Bit Error Rate) performance of the decoding for LDPC code through the nonlinear processor in the impulsive environment is improved by computer simulation.

关 键 词：非高斯模型 CLASS A LDPC码 和积译码 非线性处理器 

分 类 号：TN914[电子电信—通信与信息系统]