Abstract
This project titled ''Multi-user Code Division Multiple Access(CDMA) Communication System " revolves around the study of various components of a communication system which is used in CDMA and their simulation of implementation in the real time system. The objective of the project is to discusses different multiple access techniques in comparison with each other. Also explained Spread Spectrum technique (Direct Sequence and Frequency Hopping) and the general CDMA communication system and a description of its various components. And simulate the system in AWGN channel with BER between transmitter and receiver. The bit error rate (BER) performance of the Code Division Multiple Access (CDMA) cellular system based on IS-95 standard in the presence of an additive white Gaussian noise (AWGN) and interference has been investigated in this paper. The performance is evaluated under noise and interference for the CDMA forward link. Rake receiver is used in CDMA-based (Code Division Multiple Access) systems and can combine multipath components, which are time-delayed versions of the original signal transmission. Combining is done in order to improve the signal to noise ratio at the receiver and so reduced the BER in practical simulation of system.