Multi-relay cooperation with self-energy recycling and power consumption considerations

被引:0
|
作者
Ropokis, George A. [1 ]
机构
[1] CentraleSupelec, IETR, Campus Rennes, F-35510 Cesson Sevigne, France
来源
2019 INTERNATIONAL CONFERENCE ON WIRELESS AND MOBILE COMPUTING, NETWORKING AND COMMUNICATIONS (WIMOB) | 2019年
关键词
Simultaneous Wireless Information and Power Transfer; Amplify and Foward Relaying; Self-energy recycling; Non-linear energy harvesting;
D O I
10.1109/wimob.2019.8923314
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
We focus on the problem of rate-optimal beamforming for wireless powered cooperative communications systems. We consider the case of systems employing multiple wireless powered Amplify and Forward self-energy recycling relays and relay selection. By employing a generic piecewise linear energy harvesting model, that can adapt to the characteristics of different non linear energy harvesting measurements and models, we present the solution to the rate-optimal beamformer design problem. Our solution is based on solving a set of simple optimization subproblems where the solution of each one of them can be found in a simple closed form. Moreover, for the first time we combine such a realistic energy harvesting model with an equally realistic power consumption model at the self-energy recycling relays that not only accounts for the transmit power but also for other sources of power consumption (e.g. the power consumption of the relay circuits). By means of simulations we quantify the gains that multiple relays can bring validating that significant gains can be delivered for a variety of relay placements.
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页数:8
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