PERFORMANCE EVALUATION OF MC-CDMA SYSTEM OVER RAYLEIGH FADING CHANNEL

Multi Carrier Code Division Multiple Access (MC-CDMA) isa well known techniquefor highs peed wireless
data transmission .Two advanced technologywas included in the MC-CDMA structure, such as orthogonal
frequency division multiplex(OFDM) and the code division multiple access (CDMA),so that it benefits from
the robustness of OFDM against multipath environment and from the capability of
multiusermultiplexingservices that is achieved via (CDMA) system. MC-CDMA is a multicarrier spread
spectrum system which is classified as the candidate scheme for future mobile radio systems.In this
paperMC-CDMA system, with Rayleigh fading channel and 16QAM array modulation, was simulatedto
investigate the effects of different parameters on the system performance, such as processing gain; number
of paths; number of users;interleaving;and coding ratio.MC-CDMA performances can be considerably
improved by proper selection of these parameters. As expected, results shows that MC-CDMA has a better
performance overCDMA system.