The performance of multi-mode spatial MIMO system with imperfect CSI
نویسنده
چکیده
In this paper we describe and analyze a simple but effective algorithm for selecting transmit antennas and their coding-modulation schemes in multiple input multiple output (MIMO) communication systems. The algorithm selects the most suitable antennas among those available at the transmitter by observing the signal to selfgenerated noise ratio obtained, applying pseudoinverse on the MIMO channel matrix and adjusts the coding and modulation of each selected antenna according to the instantaneous channel conditions, maintaining the average BER of the system below the target value. The performance of the proposed adaptive MIMO system is tested in imperfect channel state information (CSI). The simulation results show, that the algorithm is not sensitive to small channel estimation errors. Key–Words: multiple input multiple output (MIMO) system, adaptive coding and modulation (ACM), quadrature amplitude modulation (QAM), antenna selection, spatial multiplexing, linear detection
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تاریخ انتشار 2005