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应用科学学报 ›› 2006, Vol. 24 ›› Issue (6): 647-649.

• 研究简报 • 上一篇    下一篇

一种适用于DAMB的LDPC码设计方案

王加庆, 于晓燕, 吴乐南   

  1. 东南大学无线电工程系, 江苏南京 210096
  • 收稿日期:2005-05-30 修回日期:2005-10-10 出版日期:2006-11-30 发布日期:2006-11-30
  • 作者简介:王加庆,博士生,研究方向:纠错编码,E-mail:klx_seu@hotmail.com;吴乐南,男,教授,博导,研究方向:多媒体信号处理,E-mail:wuln@seu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(60472054)

Design of Low-Density Parity-Check Codes for Digital Amplitude Modulation Broadcasting System

WANG Jia-qing, YU Xiao-yan, WU Le-nan   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2005-05-30 Revised:2005-10-10 Online:2006-11-30 Published:2006-11-30

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被引次数

1

摘要： 最近提出的外部信息转移图是一种优化非正则LDPC码的简单高效方法.该文把此技巧应用到数字调幅广播(DAMB)系统,取得了令人满意的结果.实验还表明在各种广播信道中优化的LDPC码皆优于Turbo码方案.

关键词: 低密度奇偶校验码, 数字调幅广播, 正交频分复用, 外部信息转移图

Abstract: The recently proposed extrinsic information transfer (EXIT) chart is a powerful yet simple method for optimizing irregular low-density parity-check (LDPC) codes.In this paper, the technique is applied to a digital amplitude modulation broadcasting (DAMB) system with satisfactory results.Simulation results show that optimized LDPC codes outperform turbo codes in various broadcast channels.This may provide references in developing DAMB systems.

Key words: EXIT chart, OFDM, LDPC codes, DAMB

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