中文说明：
扩频通信系统仿真 ——系统将基带信号（即信息）的频谱扩展至很宽的频带上，然后再进行传输，即将欲传输的信息数据用伪随机序列编码调制，实现频谱扩展，然后通过信道编码发送出去；接收端采用与发送端完全相同的伪随机序列作为本地解扩信号进行相关处理，以恢复信息，最后进行解调，完成整个系统的接收。
English Description：
Spread spectrum communication system simulation - the system expands the spectrum of baseband signal (i.e. information) to a wide frequency band, and then transmits it, that is, the information data to be transmitted is encoded and modulated with pseudo-random sequence to realize spectrum expansion, and then transmitted through channel coding; The receiver uses the pseudo-random sequence exactly the same as the transmitter as the local despreading signal for correlation processing to recover the information, and finally demodulates to complete the reception of the whole system