中文说明：此代码为pi/4-dqpsk的调制解调算法，用MATLAB实现，采用插分解调，简单实用-pi/4-dqpsk this code for the modulation and demodulation algorithm in MATLAB, transfer took decomposition, simple and practical
English Description：
pi/4-dqpsk this code for the modulation and demodulation algorithm in MATLAB, transfer took decomposition, simple and practical