BER Comparison of MIMO Systems using Equalization Techniques in Rayleigh Flat Fading Channel

Multiple Input Multiple Output (MIMO) technology is one of the most promising wireless technologies that can efficiently boost the data transmission rate, improve system coverage, and enhance link reliability. By employing multiple antennas at transmitter and receiver sides, MIMO techniques enable a new dimension– the spatial dimension – that can be utilized in different ways to combat the impairments of wireless channels. While using MIMO techniques, there is intersymbol interference present between the symbols. This paper will focus on Equalization techniques, for Rayleigh Flat fading. Equalization is a well known technique for combating intersymbol interference. In this paper, we will discuss different types of equalizer like ZF, MMSE, DFE and ML. In this paper, we will compare different equalizers with different modulations techniques like BPSK,QPSK,16-QAM.We will find out which modulation techniques is better than others and then we will compare ZF,MMSE, ML with the best modulation technique .Furthermore, we will conclude which type of equalizer will provide us better BER