直接序列扩频Matlab程序源码 直接序列扩频通信能有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中，扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在在接收端，原伪噪声序列与所收信号的的相关运算可将窄带干扰扩展到DS信号的整个频带，使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩，恢复原始信息数据。 可直接使用。

-Direct Sequence Spread Spectrum Matlab program source code direct sequence spread spectrum communication can effectively resist the narrow-band interference from the channel. In a DSSS communication systems, spread spectrum modulation to send information and data by the pseudo-noise sequence (PN). At the receiving end, the original pseudo-noise sequence and the received signal computing narrowband interference extended to the entire frequency band of the DS signal, interference equivalent to a lesser extent the relatively flat spectrum noise　the same time, the DS signal despreading restore the original data. Can be used directly.