Analyzing the performance of Multiuser MIMO Uplink System with Detection Techniques

Abstract

This In this paper, performance analysis of multiuser multiple-input multiple-output (MU-MIMO) in terms of bit error rate (BER) against with detection techniques has been presented. With the increasing demand for wireless communication system that offers users better satisfaction, different detection schemes have been developed and implemented for uplink system. Hence, this paper was basically designed to study the effect of linear minimum mean square error (MMSE-Linear) and MMSE with signal interference cancellation (MMSE-SIC) detectors on BER performance of MU-MIMO system with based station antennas taken as 4 or 8 while the number of user equipment(UE) taken as 2, 4, or 8. Each UE is considered to be equipped with one antenna at time. A model representing the wireless communication of a MU-MIMO system in uplink scenario was developed as MATLAB program. Computer simulation was conducted using the developed model and the analysis of revealed that MMSESIC outperformed MMSE-linear. Nevertheless, an obvious observation was the fact with lower number of antenna at BS together with number of receive antenna of UE, the BER performance of both techniques were almost the same