Performance of space-time coded MC-CDMA over time and frequency selective fading channel

Transmit diversity has been recently introduced to reduce the detrimental effects in fading channels. Transmit diversity techniques combined with error control coding have been explored in a new scheme called space-time coding. We apply space-time block codes to multicarrier CDMA systems. The performance of the space-time coded multicarrier CDMA system is demonstrated over time-frequency selective (double selective) fading channel through simulations. Simulation results show that the MC-CDMA systems with transmit diversity perform much better than the MC-CDMA systems without transmit diversity over double selective fading channels.