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本文介绍一种码率为2/3,约束长度为3的网格码调制(TCM)码的编码和译码方法,与QPSK方式相比,在不增加系统的频带宽度基础上,可以得到较高的编码增益。
This paper introduces a coding and decoding method of Trellis Code Modulation (TCM) codes with code rate of 2/3 and constraint length of 3. Compared with the QPSK method, we can get a better performance than the QPSK method without increasing the system bandwidth High coding gain.