Smart Antenna for Interference Mitigation in LTE Advanced

Abstract

New developed cellulartechnologies or mobile communication systems usually are aimed to improve the services quality that provided to the target user. The improvement can be verified in terms of a good signal-to –interference ratio (SINR) which increases the system capacity among other performance metrics. Interference occurs when two or more signals overlaps with each other, it consider a problem in terms of the system performance which arises in transmission quality and the system capacity. This research studies the interference problem in LTE Advanced, as one of the challenges facing 4G systems. Smart antenna system is used as mitigation technique for this problem,in which the adaptive beam-forming algorithms cancel the interference signals by increasing the gain in a chosen direction. Therefore, it would improve the system performance. The smart antenna performance investigated by MATLAB program to simulate its operation as well as the performance improvement of service offered to the end user . The improvement of the system performance considers the achieved result of this research. It evaluated the smart antenna performance metrics in term of SINR which improved by 150%, capacity increased by 31.5%,data rate by 128.8%, throughput by 155.8% and spectral efficiency by 129%.