| Joint transmit beamforming and power control in multi-user MIMO downlink using a game theoretic approach |
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| 作者姓名： | ZENG Yi ZHANG Zu-fan Special Research Center for Optical Internet and Wireless Information Networks Chongqing University of Posts and Telecommunications Chongqing China |
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| 作者单位： | ZENG Yi，ZHANG Zu-fan Special Research Center for Optical Internet and Wireless Information Networks，Chongqing University of Posts and Telecommunications，Chongqing 400065，China |
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| 基金项目： | 国家自然科学基金;重庆市科委自然科学基金 |
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| 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.
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| 收稿时间： | 29 November 2006 |
Joint transmit beamforming and power control in multi-user MIMO downlink using a game theoretic approach |
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| ZENG Yi,ZHANG Zu-fan Special Research Center for Optical Internet and Wireless Information Networks,Chongqing University of Posts and Telecommunications,Chongqing ,China.Joint transmit beamforming and power control in multi-user MIMO downlink using a game theoretic approach[J].The Journal of China Universities of Posts and Telecommunications,2007,14(2):14-18. |
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| Authors: | ZENG Yi ZHANG Zu-fan |
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| Affiliation: | Special Research Center for Optical Internet and Wireless Information Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: | 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. |
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| Keywords: | multi-user MIMO power control transmit beamforming MRT supermodular game |
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