Optimization of LDPC Codes for Turbo Equalization Based on PSO-EXIT Algorithm

摘要：

Optimization of LDPC codes based on EXIT chart of MIMO channel is recently proposed by Brink. In this paper,Brinks idea is extended to optimization of LDPC codes for MMSE turbo equalization.First ,a new method to obtain EXIT curves of the receiver was given. Furthermore ,a new optimized scheme of LDPC codes for turbo equalization, PSOEXIT algorithm, was proposed, which combined Hes modified Particle Swarm Optimization(PSO) algorithm with EXIT chart method. Decoding trajectory of (3,6)regular LDPC codes for MMSE turbo equalization was also analyzed in this paper.The degree distribution pair of the optimized irregular LDPC codes were compared with the result of Narayanans. Simulation results shows that the proposed scheme is effective.

关键词： Degree Distribution Pairs Turbo Equalization PSO EXIT chart

作者: XU Hua

作者单位: Institute of Physics and Electronic Engineering Yancheng Teachers University Yancheng, 224002,Jiangsu, P.R.China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）