Abstract: Multiple Input Multiple Output (MIMO) technology is one of the most promising wireless technologies that can increase link reliability, data transmission rate and improves the coverage of system. It increases efficiency for said total transmission power. By using multiple antennas both at transmitter and receiver sides, MIMO technology allow a novel dimension “the spatial dimension” that can reduce the limitations of wireless channels. Inter symbol interference is one the major issues with MIMO technique. There are many schemes that can be applied to MIMO systems to reduce such effects and are known as Equalization techniques. In this paper we focus on the broad spectrum MIMO systems, the Vertical Bell Labs Space-Time design and different types of equalizer like ZF, MMSE, ZF-SIC, MMSE-SIC and ML.