本程序是QAM的调制程序，以及我在编程时测试用的例子，还有空时分组码中的线性分散码进行处理时所需要的向量化函数VEC还有它的逆函数，希望对大家有帮助-This procedure is the QAM modulation procedures, as well as when I test in the programming examples, as well as space-time block codes in a linear dispersion code when needed

A fast Fourier transform (FFT) is an algorithm to compute the discrete Fourier transform (DFT) and its inverse. A Fourier transform converts time (or space) to frequency and vice versa an FFT rapidly computes such transformations. As a result, fast F