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所属单位：电子信息工程学院
发表刊物：2017 17TH IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION TECHNOLOGY (ICCT 2017)
关键字：distributed MIMO system energy efficiency power allocation Newton method Cardan formula
摘要：In this paper, we investigate the energy efficiency and power allocation problem for distributed MIMO system over composite Rayleigh channels. Given the maximum transmit power limitation per distributed antenna (DA) port, an adaptive power allocation scheme is developed to maximize the energy efficiency, and corresponding constrained optimization problem is firstly formulated. Because of the non-convex nature of the problem, we transform the constrained optimization problem into a standard convex optimization problem through the fractional programming theory. Then, the optimal solution is derived for the optimized problem by means of the Newton method. To avoid the iteration from the Newton method, another optimal solution is also derived based on Cardan formula. Simulation results show that the proposed scheme is valid, and the scheme with Cardan formula can obtain the same energy efficiency as that with Newton method, but it has lower complexity than the latter.
是否译文：否
发表时间：2017-01-01
合写作者：Chu, Junya,Wen, Benben,Wang, Guangying
通讯作者：虞湘宾