Date Added: Jan 2012
The transmission from base station to mobile or downlink transmission using M-ary Quadrature Amplitude Modulation (QAM) and Quadrature Phase Shift Keying (QPSK) modulation scheme are consider in W-CDMA system. The authors can analysis the performance of these modulation techniques when the system is subjected to AWGN and multipath Rayleigh fading are consider in the channel. They will use MatLab for simulation and evaluation of BER and SNR for WCDMA system models. They will go for analysis of Quadrature phase shift key and 16-ary Quadrature Amplitude modulations which are being used in wideband code division multiple access system, so that the system can go for more suitable modulation technique to suit the channel quality, thus they can deliver the optimum and efficient data rate to mobile terminal.