Joint Active and Passive Secure Precoding in IRS-Aided MIMO Systems

Asaad S, Wu Y, Bereyhi A, Müller R, Schaefer RF, Poor HV (2021)

Publication Type: Conference contribution

Publication year: 2021

Journal

Publisher: IEEE

City/Town: NEW YORK

Conference Proceedings Title: 2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)

Event location: Madrid, SPAIN

DOI: 10.1109/GLOBECOM46510.2021.9685630

Abstract

Using intelligent reflecting surfaces (IRSs), wireless propagation channels can be manipulated such that information leakage to eavesdropping terminals in a multiple-input multiple-output (MIMO) setting is significantly suppressed. This observation illustrates the potential secrecy gains of IRS-aided MIMO systems. This work develops a novel low-complexity algorithm by which these potential gains are exploited. Invoking methods from fractional programming, the algorithm iteratively designs the digital precoder at the transmitter and tunes the IRS elements, such that the weighted secrecy sum-rate is maximized. It is shown that as the algorithm iterates, the weighted secrecy sum-rate evolves in a non-decreasing way. Numerical investigations confirm the efficiency of the proposed algorithm.

Authors with CRIS profile

Involved external institutions

Princeton University United States (USA) (US) Universität Siegen Germany (DE)

How to cite

APA:

Asaad, S., Wu, Y., Bereyhi, A., Müller, R., Schaefer, R.F., & Poor, H.V. (2021). Joint Active and Passive Secure Precoding in IRS-Aided MIMO Systems. In 2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM). Madrid, SPAIN: NEW YORK: IEEE.

MLA:

Asaad, Saba, et al. "Joint Active and Passive Secure Precoding in IRS-Aided MIMO Systems." Proceedings of the IEEE Global Communications Conference (GLOBECOM), Madrid, SPAIN NEW YORK: IEEE, 2021.

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