Performance Enhancement of MC-CDMA System Through STTC Based STBC Site Diversity
The combination of multiple antennas and Multi-Carrier Code Division Multiple Access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems, in scenarios that model real life transmissions is an additional step towards an optimised achievement. Nevertheless, when transmitting over fading channel multi-cell interference occurs and this degrades the performance of the system. Site diversity technique is applied to the system to overcome multi-cell interference. Due to non orthogonality of spreading codes multi-cell interference is not completely eradicated. To overcome this problem, spreading codes are assigned to each base station.