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arXiv · 1808.00268

Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access

Mariam M. N. Aboelwafa·Mohamed A. Abd-Elmagid·Alessandro Biason·Karim G. Seddik·Tamer ElBatt·Michele Zorzi
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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 approximated 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.

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Mariam M. N. Aboelwafa, Mohamed A. Abd-Elmagid, Alessandro Biason, Karim G. Seddik, Tamer ElBatt, Michele Zorzi. 2018-08-01. Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access. https://arxiv.org/abs/1808.00268

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