这研究处理联合在多用户优化 transmit beamformers 和电源控制的问题多重输入多重产量(MIMO ) downlink。目的正在最小化全部的传播电源当时令人满意加干扰的 signal-to-noise 每个用户的比率(SINR ) 要求。在电源控制前,它使用最大的比率传播(MRT ) 由于它的吸引人的性质和处理的简洁决定 beamformers 的计划。为力量控制,它介绍一条 supermodular 比赛途径并且建议一个重申的严格的优势消除算法。算法被证明收敛到纳什平衡。模拟结果显示这个联合优化方法保证性能的改进。
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.