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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.05085 |
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| _version_ | 1866908694364553216 |
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| author | Ghadi, Farshad Rostami Kaveh, Masoud Hong, Hanjiang Wong, Kai-Kit Jantti, Riku Lopez-Martinez, F. Javier |
| author_facet | Ghadi, Farshad Rostami Kaveh, Masoud Hong, Hanjiang Wong, Kai-Kit Jantti, Riku Lopez-Martinez, F. Javier |
| contents | This paper investigates the impact of the recently proposed concept of fluid reconfigurable intelligent surfaces (FRIS) on covert communications. Specifically, we consider a communication scenario where a legitimate transmitter aims to covertly deliver information to its intended receiver through a planar FRIS, while an adversary attempts to detect whether any transmission is occurring. In this context, we analyze the false alarm (FA) and missed detection (MD) probabilities, and derive a closed-form expression for the covertness outage probability (COP). Furthermore, the success probability is characterized under the optimal detection threshold, providing new insights into the trade-off between covertness and reliable transmission. Numerical results reveal that FRIS provides a clear advantage over fixed-position RIS at low-to-moderate transmit powers by improving reliability and enhancing covertness, while at very high power levels, fixed-position RIS may sustain slightly higher success probability due to reduced leakage toward the adversary. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05085 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Performance Analysis of Fluid Reconfigurable Intelligent Surface over Covert Communications Ghadi, Farshad Rostami Kaveh, Masoud Hong, Hanjiang Wong, Kai-Kit Jantti, Riku Lopez-Martinez, F. Javier Information Theory This paper investigates the impact of the recently proposed concept of fluid reconfigurable intelligent surfaces (FRIS) on covert communications. Specifically, we consider a communication scenario where a legitimate transmitter aims to covertly deliver information to its intended receiver through a planar FRIS, while an adversary attempts to detect whether any transmission is occurring. In this context, we analyze the false alarm (FA) and missed detection (MD) probabilities, and derive a closed-form expression for the covertness outage probability (COP). Furthermore, the success probability is characterized under the optimal detection threshold, providing new insights into the trade-off between covertness and reliable transmission. Numerical results reveal that FRIS provides a clear advantage over fixed-position RIS at low-to-moderate transmit powers by improving reliability and enhancing covertness, while at very high power levels, fixed-position RIS may sustain slightly higher success probability due to reduced leakage toward the adversary. |
| title | Performance Analysis of Fluid Reconfigurable Intelligent Surface over Covert Communications |
| topic | Information Theory |
| url | https://arxiv.org/abs/2512.05085 |