Improved performance of MIMO antenna systems for various fading channels

This paper presents the design and performance analysis of MIMO antennas for wireless communication systems. The 2 × 2 MIMO system process applies an adaptive approach in order to reduce the impact of wireless channel impairments such as multipath fading. The MIMO system was applied in AWGN and single Rayleigh fading channel that uses QPSK modulation schemes to simulate the BER performance for QPSK in MIMO system and finally compares BER results with SISO and MISO systems.