@inproceedings{d30a2b012493448d9ffef63993268d13,
title = "Joint Active and Passive Secure Precoding in IRS-Aided MIMO Systems",
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.",
keywords = "Intelligent reflecting surfaces, MIMO precoding, fractional programming, physical-layer security",
author = "Saba Asaad and Yifei Wu and Ali Bereyhi and Muller, {Ralf R.} and Schaefer, {Rafael F.} and Poor, {H. Vincent}",
note = "Funding Information: This work was supported by Deutsche Forschungsgemeinschaft (DFG), under Grant No. MU MU3735/7-l and in part by the German Federal Ministry of Education and Research (BMBF) under Grant 16KIS1242 Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE Global Communications Conference, GLOBECOM 2021 ; Conference date: 07-12-2021 Through 11-12-2021",
year = "2021",
doi = "10.1109/GLOBECOM46510.2021.9685630",
language = "English (US)",
series = "2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings",
address = "United States",
}