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Robust Secrecy Beamforming for MIMO SWIPT with Probabilistic Constraints

Khandaker, MRA; Wong, K-K; (2016) Robust Secrecy Beamforming for MIMO SWIPT with Probabilistic Constraints. In: Cui, Shuguang Robert and Secci, Stefano, (eds.) Proceedings of 2016 IEEE Globecom Workshops (GC Wkshps). IEEE: Washington, DC, USA. Green open access

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Abstract

This paper considers simultaneous wireless information apower transfer (SWIPT) in a multiple-input multiple-output (MIMO) wiretapnd power transfer (SWIPT) in a multiple-input multiple-output (MIMO) wiretap channel with energy harvesting receivers. The main objective is to keep the probability of the legitimate user's achievable secrecy rate outage as well as the energy receivers' harvested energy outage as caused by CSI uncertainties below given thresholds. This probabilistic-constrained secrecy rate maximization problem presents a significant analytical and computational challenge since any closed-form for the probabilistic constraints with log-det functions is intractable. In this paper, we address this challenging issue using codeviation inequalitiesnvex restrictions. In particular, we derive decomposition-based large deviation inequalities to transform the probabilistic constraints into second-order cone (SOC) constraints which are easier to handle. Then we show that a robust safe solution can be obtained through solving two convex sub-problems in an alternating fashion.

Type: Proceedings paper
Title: Robust Secrecy Beamforming for MIMO SWIPT with Probabilistic Constraints
Event: IEEE-Communications-Society Global Communications Conference (IEEE GLOBECOM)
Location: Washington, DC
Dates: 04 December 2016 - 08 December 2016
ISBN-13: 9781509024827
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/GLOCOMW.2016.7849032
Publisher version: https://doi.org/10.1109/GLOCOMW.2016.7849032
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Erbium, Probabilistic logic, Energy harvesting, Robustness, MIMO, Uncertainty, Receivers
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1549999
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