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，cordic算法的matlab仿真。- Realize image watermarking, de-noising, plus noise and other functions, ofdm system simulation including 16qam modulation fft windowing modules plus cp, cordic matlab simulation algorithm.