Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access
Author's Department
Computer Science & Engineering Department
Second Author's Department
Electronics & Communications Engineering Department
Third Author's Department
Computer Science & Engineering Department
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https://www.sciencedirect.com/science/article/abs/pii/S1570870518303548
Document Type
Research Article
Publication Title
Elsevier Ad hoc Networks
Publication Date
3-1-2019
doi
10.1016/j.adhoc.2018.10.009
Abstract
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.
First Page
1
Last Page
10
Recommended Citation
APA Citation
Aboelwafa, M. M.
Seddik, K. G.
&
ElBatt, T.
(2019). Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access. Elsevier Ad hoc Networks, 85(1), 1–10.
10.1016/j.adhoc.2018.10.009
https://fount.aucegypt.edu/faculty_journal_articles/462
MLA Citation
Aboelwafa, Mariam, et al.
"Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access." Elsevier Ad hoc Networks, vol. 85,no. 1, 2019, pp. 1–10.
https://fount.aucegypt.edu/faculty_journal_articles/462