数字电视传输系统中LDPC码编译码器的研究与设计

Design and Research of LDPC Encoding and Decoding for Digital Television Broadcasting System

低密度奇偶校验码纠错能力强,能够在逼近香农极限的信噪比条件下获得很高的误码率特性,非常适用于无线通信。本文分析了在DMB-TH标准中LDPC码的构造、编码及解码算法原理,结合MATLAB仿真对其算法有效性进行了分析比较。

LDPC code is the most superb sort of error control codes,especially When it has long code length and adopts soft decoding method.In this paper,we have done a research on algorithms of constructing LDPC,encoding and decoding.With the help of MATLAB simulation tool,some results are collected to study the feasibility of this algorithm.