Joint transmit beamforming and power control in multi-user MIMO downlink using a game theo

Joint transmit beamforming and power control in multi-user MIMO downlink using a game theoretic

approach

ZENG Yi;ZHANG Zu-fan

【期刊名称】《中国邮电高校学报（英文版）》 【年(卷),期】2007(014)002

【摘要】This study addresses the problem of jointly optimizing the transmit beamformers and power control in multi-user multiple-input multiple-output (MIMO) downlink. The objective is minimizing the total transmission

power

while

satisfying

the

signal-to-noise

plus

interference ratio (SINR) requirement of each user. Before power control, it uses the maximum ratio transmission (MRT) scheme to determine the beamformers due to its attractive properties and the simplicity of handling. For power control it introduces a supermodular game approach and proposes an iterated strict dominance elimination algorithm. The algorithm is proved to converge to the Nash equilibrium. Simulation results indicate that this joint optimization method assures the improvement of performance. 【总页数】5页(14-18) 【

关

键

词

】

multi-user

MIMO;power

control;transmit

beamforming;MRT;supermodular game 【作者】ZENG Yi;ZHANG Zu-fan