物理学报Issue(2)：1-10,10.DOI:10.7498/aps.64.028402
无线携能通信系统中基于能量获取比例公平的波束成形设计∗
Beamforming design based on energy harvesting prop ortional fairness in a simultaneous wireless information and p ower transfer system
摘要
Abstract
In this paper, we propose a beamforming design based on energy harvesting proportional fairness to overcome the unbalance of energy harvesting in a simultaneous wireless information and power transfer system. We aim at achieving the energy harvesting proportional fairness while guaranteeing the signal to interference plus noise ratio constraints at the information receivers and total power constraint at the transmitter by optimizing the beamforming vectors. This optimization problem is of non-convex and hence difficult to solve. In order to solve it, in this paper, we first use the semi-definite relaxation technique as a tool to transform it into a semi-definite program problem, and then propose an iterative algorithm based on bisection method to obtain the optimal beamforming vectors. Besides, we also extend our result to a robust case where the transmitter only knows a part of the channel state information and the bound of channel errors, and propose an iterative algorithm based on worst-case method to obtain the corresponding beamforming vectors. Finally, the simulation results show that the proposed algorithms can achieve both the energy harvesting proportional fairness and global optimum.关键词
无线携能通信/波束成形/能量获取/半定松弛Key words
simultaneous wireless information and power transfer/beamforming/energy harvesting/semi-definite relaxation引用本文复制引用
张海洋,黄永明,杨绿溪..无线携能通信系统中基于能量获取比例公平的波束成形设计∗[J].物理学报,2015,(2):1-10,10.基金项目
国家自然科学基金(批准号:61372101,61271018)、国家科技重大专项(批准号:2012ZX03004-005-003,2011ZX03003-003-03)、江苏省科技计划项目(批准号：BE2012167, BK2011019)和教育部博士点新教师基金(批准号:20100092110010)资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant Nos.61372101,61271018), the National Science and Technology Major Project of China (Grant Nos.2012ZX03004-005-003,2011ZX03003-003-03), the Research Project of Jiangsu Province, China (Grant Nos. BE2012167, BK2011019), and Ph. D. Programs Foundation of Ministry of Education of China (Grant No.20100092110010) （批准号:61372101,61271018）
