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

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.