直扩通信系统抗其他扩频信号干扰的性能分析

Pertormance analysis of direct-sequence spread-spectrum communication system resisting other spread-spectrum signals’ interference

取消待接收的直接序列扩频信号与其他直接序列扩频干扰信号码元宽度相等的限制来讨论直接序列扩频通信系统抗其他扩频信号干扰的性能。分析了其他扩频干扰信号通过扩频接收机相关器的谱密度,计算了系统的处理增益。这为正确估计其他它扩频信号干扰的大小和准确计算 CDMA 系统的容量提供了依据。

Canceling the restriction,in which the code width of spread-spectrum signals as interference must be equal to that of useful spread-spectrum signals. To discuss properties of the direct-sequence spread-spectrum communication system resisting interference from other spread-spectrum signals. the density of frequency spectrum of other Spread-Spectrum interfering signals, which passed through Spread-Spectrum receiver’s relevant device,was analysed. And processing gain of the system was calculated. It offers the basis for estimating interference size of other Spread-Spectrum signals correctly and calculating capacity of CDMA system.