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Computer Science > Information Theory

arXiv:2408.14969 (cs)
[Submitted on 27 Aug 2024]

Title:Secrecy Performance Analysis of RIS-Aided Fluid Antenna Systems

Authors:Farshad Rostami Ghadi, Kai-Kit Wong, Masoud Kaveh, F. Javier Lopez-Martinez, Wee Kiat New, Hao Xu
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Abstract:This paper examines the impact of emerging fluid antenna systems (FAS) on reconfigurable intelligent surface (RIS)-aided secure communications. Specifically, we consider a classic wiretap channel, where a fixed-antenna transmitter sends confidential information to an FAS-equipped legitimate user with the help of an RIS, while an FAS-equipped eavesdropper attempts to decode the message. To evaluate the proposed wireless scenario, we first introduce the cumulative distribution function (CDF) and probability density function (PDF) of the signal-to-noise ratio (SNR) at each node, using the central limit theorem and the Gaussian copula function. We then derive a compact analytical expression for the secrecy outage probability (SOP). Our numerical results reveal how the incorporation of FAS and RIS can significantly enhance the performance of secure communications.
Subjects: Information Theory (cs.IT); Signal Processing (eess.SP)
Cite as: arXiv:2408.14969 [cs.IT]
  (or arXiv:2408.14969v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2408.14969

Submission history

From: Farshad Rostami Ghadi [view email]
[v1] Tue, 27 Aug 2024 11:22:14 UTC (1,381 KB)
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