使用M系列直扩方式，采用2PSK数字调制方法，搭建的LabVIEW下的仿真。-DSSS-2FSK Modulation by LabVIEW

用于数字水印的添加，可以根据幅度的大小自动调节水印幅度，用直扩2psk实现-Used to add a digital watermark, the watermark can be automatically adjusted according to the size of the magnitude of the amplitude with DSSS 2psk achieve

直接序列扩频，信道采用重复编码，2psk调制，针对白噪声，多径环境下的误码率仿真-Direct sequence spread spectrum, channel coding using repeated, 2psk modulation, for white noise, BER simulation of multipath environments