Simulation of Different Modulation Technique in Cdma System Using Awgn Channel

This paper analyzes the design , implementation and comparison of a CDMA transmitter on third generation mobile among QPSK (Quadrature Phase Shift Keying), ASK(Amplitude shift keying ),FSK(frequency shift keying) modulation technique using awgn channel in mobile cellular communication? systems. Similar kind of work was done by R. Muraoka , D.Covarrubias, A. Arvizu? &? J. Mendieta using BPSK(Binary Phase Shift Keying) modulation technique[2]. The selection of good modulation technique is a important factor for analyzing the performance of mobile communication system. The simulated result demonstrates the performance analysis of these modulation techniques and a comparison among these modulation techniques when the system is subjected to Additive White Gaussian Noise (AWGN) is considered in the channel. The comparison is done on the basis of simulation and evaluation of Bit Error Rate (BER) and Signal-To-Noise Ratio (SNR) for CDMA system models; therefore ,by analyzing the comparison we find out better modulation technique using which we can deliver the optimum and efficient data rate to mobile terminal.