A Fair Power Splitting Algorithm for Simultaneous Wireless Information and Energy Transfer in CoMP Downlink Transmission

被引:0
|
作者
Kai Liang
Liqiang Zhao
Kun Yang
Gan Zheng
Wei Ding
机构
[1] Xidian University,State Key Laboratory of Integrated Service Networks
[2] University of Essex,The School of Computer Science and Electronic Engineering
[3] University of Luxembourg,Interdisciplinary Centre for Security, Reliability and Trust (SnT)
[4] Linköping University,Mobile Telecommunications, Department of Science and Technology (ITN)
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关键词
Simultaneous wireless information and energy transfer; Coordinated multipoint; Fairness; Power splitting;
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学科分类号
摘要
A power splitting approach for simultaneous wireless information and energy transfer is provided in this paper. We consider coordinated multipiont downlink transmission with M base stations (BSs) and J mobile stations (MSs). The main goal of this paper is to maximize per-MS data rate and receiving energy by dynamically optimizing transmitting beamformer. To improve fairness, this problem can be formulated to maximize the minimum rate of all J MSs with per-BS transmitting power constraints and per-MS receiving energy constraints, which is NP-hard problem. Minimum mean square error receiver, affine approximation and alternative convex optimization (ACO) methods are introduced to decompose the original NP-hard problem to several convex subproblems which can be solved by second-order cone programming with low rank (which is equal to the number of data streams) solutions, and then a fast heuristic algorithm is provided to solve the original problem. Numerical results show that the proposed algorithm can achieve fairness, and outperforms sum rate scheme in terms of fairness and outage probability. The fast convergency also demonstrates the proposed algorithm’s good performance.
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页码:2687 / 2710
页数:23
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