For this system we use Hybrid selection/Maximal-ratio transmission technique over a faded correlated MIMO quasi-static channel. Hence we came up with an idea to write this thesis paper where we investigated the techniques which we can utilize in order to increase capacity (Bit/s/Hz) and hence provide the less BER in MIMO system. The main part of this thesis can be considered as a most efficient decision for highest capacity with the reasonable BER performance. In this paper we give a theoretical overview of several important theoretical concepts which is related to MIMO. It is a big challenge to reduce hardware complexity, use power with flexible capacity, data rate and bit error rate for the MIMO technology. However, their remarkable hardware and computational burden hinders the wide deployment of such architectures in modern systems. It is well known that Multiple Input-Multiple Output systems enhance the spectral efficiency significantly of wireless communication systems.
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