中文说明：这是一个用OFDM对图像加密的方法，并对图像不通信噪比下图像的加密进行了比较。同时也比较了不同调制方式下误码率与信噪比的比值。
English Description：
This is the image encryption using OFDM method and encryption for image communication under noise ratio images were compared. Also quite different modulation error rate and the ratio of signal to noise ratio.