中文说明： 添加噪声处理，有详细的注释，本程序的性能已经达到较高水平，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，非常适合计算机视觉方面的研究使用,代码里有很完整的注释和解释。
English Description：
Add noise, there are detailed notes, this program has reached a higher level of performance, simulation of the OFDM system with 16qam modulation FFT window plus CP module, very suitable for use in computer vision research, very complete the comment in the code and explanations.