Analysis of BER Performance With MMSE Detection Scheme for DSCDMA and MC-CDMA Systems and Compare Them

In direct Sequence spread spectrum transmission, the user data is multiplied by a binary code sequence. And the receiver side, the coded signal is again multiplied by same code sequence to get original signal back. Multi-Carrier Code Division Multiple Access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to support multiple users at the same time. MC-CDMA system is orthogonal communication scheme. DS-CDMA system is on type of simple CDMA system. MC-CDMA is combination of OFDM and DS-CDMA. The performance measure is based on Rayleigh Fading Channel.