Fast Antenna Selection Algorithms for Distributed MIMO Systems
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A norm and correlation based antenna selection algorithm(NCBA) and its modified version(NCBA-M) are proposed for the downlink transmit antenna selection in distributed multiple input multiple output(MIMO)systems.The performance of the proposed algorithms is compared with that of norm based antenna selection algorithm(NBA) and large scale fading based antenna selection algorithm(LFBA) respectively.The simulation result shows that when no correlation of the transmit antenna correlation in the same antenna port is considered,NBA,LFBA and NCBA have similar performance to the optimal antenna selection algorithms.However,when transmit antennas in the same port have strong correlations,NBA and LFBA result in a high capacity loss,but NCBA-M can still approach the performance of optimal antenna selection algorithm.