使用高阶累积量对MPSK信号进行调制识别，实现了图像的加水印，去噪，加噪声等功能，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块。- Using high-order cumulants of MPSK signal modulation recognition, Realize image watermarking, de-noising, plus noise and other functions, ofdm system simulation including 16qa