蜂窝上行链路中最优SIR分配的联合波束形成和功率控制

T. Lan, P. Hande, M. Chiang
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引用次数: 9

摘要

本文考虑了联合天线波束形成和发射功率控制的非凸全局耦合问题,以最大限度地提高作为所获得SIRs函数的全网效用。利用功率控制[13]的溢出负荷特性,我们将效用赋值为获得的SIRs的函数,并将联合优化表述为效用最大化问题。尽管问题的结构是高度耦合的,但我们提出了一种有效的分布式算法,该算法一般是收敛的。尽管联合优化具有非凸性,但我们证明了两种用户情况下的全局最优性。仿真结果表明,该算法总是收敛于全局最优分配,并说明了功率和天线波束形成在网络效用最大化中的帕累托最优权衡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Joint Beamforming and Power Control for Optimal SIR Assignment in Cellular Uplinks
This paper considers the nonconvex and globally coupled problem of joint antenna beamforming and transmit power control, in order to maximize the network-wide utility as a function of attained SIRs. Using a spillage-load characterization for power control [13], we assign utility as a function of attained SIRs and formulate the joint optimization as a utility maximization problem. Despite the highly coupled structure of the problem, we propose an efficient distributed algorithm that is proved to be convergent in general. Despite nonconvexity in the joint optimization, we prove global optimality in the two user case. We find in simulations the algorithm always converges to the global optimal allocation, and the Pareto-optimal tradeoff between power and antenna beamforming in maximizing network utility is illustrated.
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