Towards optimal resource allocation in wireless powered communication networks with non-orthogonal multiple access

被引:18
作者
Aboelwafa, Mariam M. N. [1 ]
Abd-Elmagid, Mohamed A. [2 ]
Biason, Alessandro [3 ]
Seddik, Karim G. [1 ]
ElBatt, Tamer [4 ]
Zorzi, Michele [3 ]
机构
[1] Amer Univ Cairo, ECNG Dept, AUC Ave, New Cairo 11835, Egypt
[2] Virginia Tech, Dept ECE, Blacksburg, VA 24060 USA
[3] Univ Padua, DEI, Via Gradenigo 6b, I-35131 Padua, Italy
[4] Amer Univ Cairo, Dept CSE, AUC Ave, New Cairo 11835, Egypt
基金
欧盟地平线“2020”;
关键词
Energy harvesting; Non-orthogonal multiple access; Successive interference cancellation; Wireless powered communication networks; Optimization; SWIPT; INFORMATION;
D O I
10.1016/j.adhoc.2018.10.009
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The optimal allocation of time and energy resources is characterized in a Wireless Powered Communication Network (WPCN) with Non-Orthogonal Multiple Access (NOMA). We consider two different formulations; in the first one (max-sum), the sum-throughput of all users is maximized. In the second one (max-min), and targeting fairness among users, we consider maximizing the min-throughput of all users. Under the above two formulations, two NOMA decoding schemes are studied, namely, Low Complexity Decoding (LCD) and Successive Interference Cancellation Decoding (SICD). Due to the non-convexity of three of the studied optimization problems, we consider an approximation approach, in which the non-convex optimization problem is approximated by a convex optimization problem, which satisfies all the constraints of the original problem. The approximate convex optimization problem can then be solved iteratively. The results show a trade-off between maximizing the sum throughout and achieving fairness through maximizing the minimum throughput. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 10
页数:10
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