摘要
本文介绍格状编码调制(TCM)的基本原理,以及如何编程实现ITU—TV.32给出的8状态32QAM网格编码调制,包括卷积码编码、差分编码及维特比译码等部分。
This paper introduces the fundamental theory of TCM ( Trellis Coded Modulation) and how to execute the 32 QAM-TCM program, giving 8 status 32 QAM grid encoding modulation. Also given in the paper is convolution encoding, differential encoding and Viterbi decoding.
出处
《通信与广播电视》
2008年第2期1-6,共6页
Communication & Audio and Video
关键词
格状编码调制
32QAM
卷积编码
差分编码
维特比译码
Trellis Coded Modulation 32QAM convolution encoding differential encoding Viterbi decoding