Optimal number of users in zero-forcing based multiuser MIMO systems with large number of antennas
作者： Minchae Jung , Younsun Kim , Juho Lee , Sooyong Choi
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摘要: The optimal number of users achieving the maximum sum throughput is analyzed in zero-forcing (ZF) based multiuser multiple-input multiple-output (MIMO) systems with a large base station (BS) antennas. By utilizing deterministic ergodic rates for ZF-beamforming (ZF-BF) and ZF-receiver (ZF-R) BS antennas [1], [2], we can obtain throughputs ZF-BF ZF-R uplink downlink frame structures, respectively. Then, also formulate solve optimization problems maximizing respect to users. This paper shows that approximate concave function feasible range simulation results verify analyses show derived numbersof provide as well MIMO
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