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Lecture notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

Robust Secure Transmission Scheme in MISO Interference Channel with Simultaneous Wireless Information and Power Transfer

Chong Xue, Jian Xiao, Sai Zhao, Jingrong Zhou, Maoxin Tian

Published Sep 30, 2017• 0 citations
Publisher
DOI
10.1007/978-3-319-66625-9_2

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The secure transmission in the multiple-input-single-output simultaneous wireless information and power transfer (SWIPT) system is an important issue. Considering channel uncertainties, we investigate the robust secure transmission scheme, which maximizes the worst-case secrecy rate under transmit power constraint and energy-harvesting (EH) constraint. The optimization problem is a nonconvex problem. Omitting the rank-one constraint on transmit covariance, it is transformed into a solvable semidefinite program (SDP) where the rank relaxation performance upper bound is obtained. Since the obtained rank relaxation transmit covariance may not be rank one, we propose a lower bound-based rank-one suboptimal (LB-Sub) solution by employing Charnes-Cooper transformation. We also propose the suboptimal Gaussian randomized (GR) solutions based on the rank relaxation upper bound and the lower bound, respectively. Simulation results have shown that our proposed LB-Sub solution and suboptimal GR solution based on the rank relaxation upper bound outperform the nonrobust scheme.