期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2012
卷号：2
期号：7
出版社：S.S. Mishra
摘要：The technology needed to tackle the challenges to make services like high speed data, video and multimedia traffic as well as voice signals available is popularly known as the Third Generation (3G) Cellular Systems. Downlink transmission (base station to mobile terminal) using high data rate Mary Quadrature Amplitude Modulation (QAM), Quadrature Phase Shift Keying (QPSK) and Binary Phase Shift Keying (BPS K) modulation schemes are considered in a Wideband-Code Division Multiple Access (W-CDMA) system. The performances of these modulation techniques are evaluated when the system is subjected to a number of users as well as noise and interference in the channel. Additive White Noise Gaussian (AWGN) and multipath Rayleigh fading are considered in the channel. Computer simulation tool, MATLAB, is used throughout the research to evaluate Bit-Error-Rate (BER) for W-CDMA system models.
