中文说明：
直接序列扩频就是直接用具有高码率的扩频码序列在发端去扩展信号的频谱。而在收端，用相同的扩频码序列去进行解扩还原成原始的信息。
English Description：
Direct sequence spread spectrum is to spread the spectrum of the signal at the transmitter directly with the spread spectrum code sequence with high code rate. At the receiving end, the same spreading code sequence is used to despread and restore the original information