Abstract: This Paper basically Represents simulation modal of root raised cosine filter for WCDMA with different parameters of filter. Here we have study the Simulation Parameters (Number of Bits, Bit error rate) of Pulse Shaping FIR Filter at different group delay for WCDMA. W-CDMA is a third-generation (3G) mobile wireless technology that promises much higher data speeds to mobile and portable wireless devices than commonly offered in today's market. It enables several users to transmit their information over the same channel bandwidth. In the mode of transmission a trade off exists between bandwidth containment in frequency domain and ripple attenuation in time domain. It is this trade off of bandwidth containment versus ripple amplitude is considered during system design when developing a data transmission system that employs pulse shaping.

Keywords: WCDMA, RRC Filter, DSSS, BER, QPSK, SNR.