QPSK发送机，信号源为随机二进制序列，经串并变换后，转换成双极性信号发送-QPSK transmitter, the signal source for random binary sequence, series and transform, change the polarity signal sent in pairs

Generate the digital AWGN signal n[k] (sampled n(t)) by generating zero mean Gaussian random variables independently (separately) for each k MATLAB function random.

1+sign(cos(t)),3+sin(t),randn随机信号，三种独立成分的分离，包含程序子图。-1+ sign (cos (t)), 3+ sin (t), randn random signal, the separation of the three separate components, including the program subgraph.