摘要
介绍DVB中删除卷积码的编译码方法,同时提出了一种优化译码算法。该算法增强了纠错能力,提高了译码精度,加强了通信系统的可靠性和有效性,尤其对DVB中可变码率的删除卷积码的译码具有很好的实用性。
We introduce an encoding and decoding algorithm for punctured convolutinal codes in Digital Video Broadcasting and put forward a kind of optimized decoding algorithm in this paper. This algorithm provides strong error correction ability and good practicability especially to the Rate Compatible Punctured Convolutional(RCPC) codes in Digital Video Broadcasting, and it can improve the precision of decoding and increase the reliability and validity of communication system.
出处
《电视技术》
北大核心
2004年第4期16-18,共3页
Video Engineering
关键词
数字视频广播
删除卷积码
译码算法
纠错能力
信源编码
punctured convolutional code
free distance
viterbi decoding
unequal error protection code
RCPC codes
