[01] Isiaka A. Alimi, Department of Electrical and Electronics Engineering, School of Engineering and Engineering Technology, Federal University of Technology, Akure, Nigeria. [02] Oluyomi Aboderin, Department of Engineering and Space Systems, National Space Research and Development Agency, Abuja, Nigeria.

The multipath fading has been observed as one of the major issues in wireless systems particularly in the mobile communication systems. Its effect leads to significant impairment in the signal received by the mobile units. This necessitates the need to take multipath fading into consideration in designing an effective radio communication system by implementation of schemes which enable the effects to be minimized. Rake receiver has been observed as a viable solution to reduce multipath effect in wideband code division multiple access (WCDMA) systems. The implementation of Rake receiver gives better performance in terms of the bit error rate (BER) and the associated system throughput. However, Rake receiver consists of sub-component which increases the system computations and also brings about high power consumption. In this paper, we proposed a simplified system that is based on ordered successive interference cancellation (OSIC) which is a feasible scheme in a real-time mobile scenario to reduce multipath effect and multi-user interference. The simulation results obtained show significant performance improvement in symbol-error-rate (SER) over different signal-to-noise ratio (SNR) considered.

Wideband Code Division Multiple Access (WCDMA), Third Generation (3G), Rake Receiver, Multiuser Detection (MUD), Ordered Successive Interference Cancellation (OSIC)

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