Receive Antenna Selection in Uplink Smart Antenna MIMO Systems

Smart Antenna (SA) and multiple-input multiple-output (MIMO) systems have enhanced the performance of communication systems. The combination of these systems has advantages of both these two systems simultaneously. The capacity of single-user uplink SA-MIMO systems is investigated in the literature. One drawback of multi-antenna is the high complexity burden and hardware cost due to using more radio frequency (RF) chains. One remedy for this drawback is the antenna selection technique in which the best antennas are selected among available antennas and hence the number of RF chains is reduced. This paper proposes the antenna selection technique in the uplink SA-MIMO systems. The proposed technique selects the best subset of antennas to maximize the capacity of these systems. The simulation results show that how the proposed technique significantly reduces the computational burden and hardware cost while the performance is influenced insignificantly.