期刊名称：International Journal on Internet and Distributed Computing Systems
印刷版ISSN：2219-1127
电子版ISSN：2219-1887
出版年度：2012
卷号：2
期号：1
页码：120-122
出版社：IJIDCS Press
摘要：Multicarrier Code Division Multiple Access Schemes (MC-CDMA) have been recently introduced in existing CDMA based systems to improve security, data transmission rate and to minimize Inter Symbol Interference (ISI). CDMA experiences severe multipath fading which badly affects its performance. By transmitting identical narrowband Direct- Sequence (DS) waveforms using frequency diversity, in parallel with a number of subchannels, multipath fading could be minimized. Implementation of this multicarrier modulation technique in CDMA system is known as multicarrier CDMA. We have shown that in Rayleigh Fading Channel, due to multicarrier modulation, when one subcarrier goes deep fade, another subcarrier remains safe. Therefore MC-CDMA can combat multipath fading better than CDMA and signal can be received in low bit error rate (BER).
