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

作     者：ZENG Yi ZHANG Zu-fan 

作者机构：Special Research Center for Optical Intemet and Wireless Information Networks Chongqing University of Posts and Telecommunications Chongqing 400065 China 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2007年第14卷第2期

页      面：14-18页

核心收录：

学科分类：0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 0711[理学-系统科学] 07[理学] 0839[工学-网络空间安全] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China (60602057) the Natural Science Foundation of Chongqing Science and Technology Commission (CSTC, 2006BB2360) 

主　　题：multi-user MIMO power control transmit beamforming MRT supermodular game 

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.