Physical Layer Security Enhancement Exploiting Intelligent Reflecting Surface

نویسندگان

چکیده

In this letter, the use of intelligent reflecting surface (IRS) to enhance physical layer security downlink wireless communication is investigated. Assuming a single-antenna legitimate user and multi-antenna eavesdropper, we propose an effective algorithm jointly optimize active passive beamforming. proposed algorithm, optimal transmit beamforming vector at BS under fixed IRS phase shifts derived, low-complexity based on fractional programming (FP) manifold optimization (MO) obtain near shifts. Simulation results demonstrate that can almost achieve performance upper bound with fast convergence rate.

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ژورنال

عنوان ژورنال: IEEE Communications Letters

سال: 2021

ISSN: ['1558-2558', '1089-7798', '2373-7891']

DOI: https://doi.org/10.1109/lcomm.2020.3042344