Abstract: Past some decade, mobile communication system has developed from 1G, 2G and 3G and now it has to enter into 4G.CDMA is most eminent multiple access scheme used in 3G.The number of us count in CDMA network exponentially rises and it limits the Capacity of CDMA network. In this article, the performance of CDMA network in wireless environment has been analyzed, using the parameters including the number of users, spreading gain, thermal noise,Multiple Access Interference and BER of CDMA with user count.

Keywords: CDMA,Spreading gain, BER, Multiple User Interference.