中文说明：对于初学者具有参考意义，抑制载波型差分相位调制，最大似然（ML）准则和最大后验概率（MAP）准则，GSM中GMSK调制信号的产生，仿真效率很高的，这个有中文注释，看得明白。
English Description：
For beginners with reference, differential phase modulation carrier suppression, criterion of maximum likelihood (ML) and maximum a posteriori (map) criterion, GSM GMSK modulation signal, simulation efficiency is very high, the Chinese notes, to understand it.