BER Performance Improvement of MIMO System

Abstract

Wireless Communication System has gained a lot of importance in the present times due to its high accuracy, greater extent of secure transfer and effectiveness. The major challenges faced by the modern digital wireless communication is to satisfy the ever growing demand of high speed reliable communication in multimedia and internet services with extremely limited frequency spectrum and limited power. Also wireless channel suffers from CCI and fading. MIMO is one of the technology is used to achieve the above requirements. The system efficiency reduces due to limited resources and the impairments of the wireless channels like noise and ISI these can be compensated by using equalization techniques. In this work the performance improvement of the MIMO system can be accomplished by using OSTBC, ML detector and MRC techniques. BER analysis is done under Rayleigh fading channel using BPSK modulation. Simulation results shows that ML equalizer with OSTBC using BPSK gives better performance.