卫星数字视频广播系统中信道编译码性能的分析

Performance Analysis of Channel Encoding and Decoding in Satellite Digital Video Broadcasting System

本文分析了卫星数字视频广播系统（DVB－S）中信道编码的方式，并采用Viterbi译码器字节错误概率代替比特错误概率的方法来对DVB－S信道编码系统进行分析，所得到的字节错误概率上限界更适于分析DVB－S系统中级联卷积码内码和R－S外码的编码方案。

In this paper,the channel coding in satellite digital video broadcasting system is analysed,and the Viterbi decoding byte error probability replaced bit-error probability to analyse DVBS channel coding performance. We have obtained an improved upper bound of the byte error probability,it is more suitable to analyse coding scheme of inner comvolution and outer R-S coding in DVB-S system.