Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/11597
Title: | Malicious Reconfigurable Intelligent Surfaces: How Impactful Can Destructive Beamforming Be? | Authors: | Rivetti, S. Demir, O.T.G. Bjornson, E. Skoglund, M. |
Keywords: | Array signal processing Computer hacking imperfect CSI Jamming malicious RIS Optimization Reconfigurable intelligent surface (RIS) Reconfigurable intelligent surfaces Signal to noise ratio SNR degradation Vectors Array processing Beamforming Channel state information Jamming Network security Optimization Personal computing Array signal processing Computer hacking Imperfect channel state information Jamming Malicious reconfigurable intelligent surface Optimisations Reconfigurable Reconfigurable intelligent surface SNR degradation Signal to noise ratio |
Publisher: | Institute of Electrical and Electronics Engineers Inc. | Abstract: | Reconfigurable intelligent surfaces (RISs) have demonstrated significant potential for enhancing communication system performance if properly configured. However, a RIS might also pose a risk to the network security. In this letter, we explore the impact of a malicious RIS on a multi-user multiple-input single-output (MISO) system when the system is unaware of the RIS’s malicious intentions. The objective of the malicious RIS is to degrade the SNR of a specific UE, with the option of preserving the SNR of the other UEs, making the attack harder to detect. To achieve this goal, we derive the optimal RIS phase-shift pattern, assuming perfect channel state information (CSI) at the hacker. We then relax this assumption by introducing CSI uncertainties and subsequently determine the RIS’s phase-shift pattern using a robust optimization approach. Our simulations reveal a direct proportionality between the performance degradation caused by the malicious RIS and the number of reflective elements, along with resilience toward CSI uncertainties. IEEE | URI: | https://doi.org/10.1109/LWC.2024.3395831 https://hdl.handle.net/20.500.11851/11597 |
ISSN: | 2162-2337 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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