摘要
格状码调制是80年代提出来的在带限信道数字传输中把纠错编码和调制解调看作一个整体来进行研究的技术.本文给出了一个含有r=2/3卷积码做格状码进行纠错的OPSK(八相移相键控)系统模型,并讨论了其译码方案.
Trellis coded modulation has evolved over the past decade as a combined coding and modulation technique for digital transmission over band-limited hannels.This paper proposes an OPSK System model which involves r=2/3 convolutional codes as Trellis codes to correct errors.The decoding method is discussed.
关键词
调制
调节
编码
译码
modulate
demodulate
coding
decoding
