Multi-User Detection using Harmony Search Algorithm in CDMA Systems

摘要

Major requirement of the next generation wireless communication systems is to provide higher data rates in transmission of signal in order to meet higher demand of quality services. Multi-User Detection is a field which comprises all aspects related to the detection of mutual users whose received signals are not orthogonal to each other. This generally corresponds to (non orthogonal) CDMA systems, because these systems have a large number of users whose signals overlap in frequency and time. DS-CDMA system is extensively used wireless communication technology. Use of Direct Sequence Spread Spectrum causes MAI (Multiple Access Interference) which in turn affects performance of DS-CDMA system. To distinguish user data in presence of Multiple Access Interference, various Multi-User detection techniques were suggested by different researchers. Objective of this paper.....