A coded modulation system based on convolutional coding and constellation control and the coded modulation method

摘要

The present invention 4-PSK convolution (convolution) code as a coding modulation system using the aqueous phase control according to the code rate, in particular code sequence in four of the kind only occur using a convolutional encoder and generating are four types of code sequences ( sikimyeo arranged in a phase shift keying) signal constellation, code Hamming distance is close sign between series are used for the convolution code and the aqueous phase control to position a distance close to the signal constellation and away position the distance of the signal constellation each other to a large code Hamming distance It relates to a coded modulation system and a coding modulation scheme.