Multiuser Detection in DS-CDMA Using Hybrid Evolutionary Strategy

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Direct Sequence Code-Division Multiple Access (DS-CDMA) systems provide high spectrum efficiency, increased capacity, and dynamic allocation of bandwidth. In CDMA, several users access the same spectrum jointly and concurrently. Multiple Access Interference (MAI) is a major performance limiting factor of the conventional single user detector in a DSCDMA system. To reduce the MAI and combat the near-far problem, Verdu introduced MultiUser Detection (MUD) strategy for CDMA systems which achieves the minimum probability of error.