Robust optimization with probabilistic constraints for power-efficient and secure SWIPT

Le, Tuan Anh ORCID:, Vien, Quoc-Tuan ORCID:, Nguyen, Huan X. ORCID:, Ng, Derrick Wing Kwan and Schober, Robert (2016) Robust optimization with probabilistic constraints for power-efficient and secure SWIPT. IEEE Global Communications Conference (GLOBECOM). In: 2016 IEEE Global Communications Conference (GLOBECOM), 04-08 Dec 2016, Washington, DC, USA. ISBN 9781509013289. [Conference or Workshop Item] (doi:10.1109/GLOCOM.2016.7842232)

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In this paper, we propose beamforming schemes to simultaneously transmit data to multiple information receivers (IRs) while transfering power wirelessly to multiple energy harvesting receivers (ERs). Taking into account the imperfection of the instantaneous channel state information, we introduce a probabilistic-constrained optimization problem to minimize the total transmit power while guaranteeing data transmission reliability, secure data transmission, and power transfer reliability. As the proposed optimization problem is non-convex and has an infinite number of constraints, we propose two robust reformulations of the original problem adopting safe-convex-approximation techniques. The derived robust formulations are in semidefinite programming forms, hence, they can be effectively solved by standard convex optimization packages. Simulation results confirm the superiority of the proposed approaches to a baseline scheme in guaranteeing transmission security.

Item Type: Conference or Workshop Item (Paper)
Research Areas: A. > School of Science and Technology > Computer and Communications Engineering
Item ID: 21386
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Depositing User: Quoc-Tuan Vien
Date Deposited: 20 Feb 2017 16:16
Last Modified: 17 Jun 2021 20:43

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