UAV-Relay Assisted RSMA Fluid Antenna System: Outage Probability Analysis
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915207762149376 |
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| author | Ghadi, Farshad Rostami Kaveh, Masoud Hernando-Gallego, Francisco Martin, Diego Wong, Kai-Kit Chae, Chan-Byoung |
| author_facet | Ghadi, Farshad Rostami Kaveh, Masoud Hernando-Gallego, Francisco Martin, Diego Wong, Kai-Kit Chae, Chan-Byoung |
| contents | This letter studies the impact of fluid antenna system (FAS) technology on the performance of unmanned aerial vehicle (UAV)-assisted multiuser communication networks. Specifically, we consider a scenario where a fixed-position antenna (FPA) base station (BS) serves K FAS-equipped users with the assistance of a UAV acting as an aerial relay. The BS employs rate-splitting multiple access (RSMA), while the UAV operates in half-duplex (HD) mode using the decode-and-forward (DF) strategy. For this system, we derive a compact analytical expression for the outage probability (OP) and its asymptotic behavior in the high signal-to-noise ratio (SNR) regime, leveraging the multivariate t-distribution. Our results show how deploying FAS at ground users (GUs) in UAV-aided communications improves overall system performance compared to using FPA GUs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16751 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | UAV-Relay Assisted RSMA Fluid Antenna System: Outage Probability Analysis Ghadi, Farshad Rostami Kaveh, Masoud Hernando-Gallego, Francisco Martin, Diego Wong, Kai-Kit Chae, Chan-Byoung Information Theory Signal Processing This letter studies the impact of fluid antenna system (FAS) technology on the performance of unmanned aerial vehicle (UAV)-assisted multiuser communication networks. Specifically, we consider a scenario where a fixed-position antenna (FPA) base station (BS) serves K FAS-equipped users with the assistance of a UAV acting as an aerial relay. The BS employs rate-splitting multiple access (RSMA), while the UAV operates in half-duplex (HD) mode using the decode-and-forward (DF) strategy. For this system, we derive a compact analytical expression for the outage probability (OP) and its asymptotic behavior in the high signal-to-noise ratio (SNR) regime, leveraging the multivariate t-distribution. Our results show how deploying FAS at ground users (GUs) in UAV-aided communications improves overall system performance compared to using FPA GUs. |
| title | UAV-Relay Assisted RSMA Fluid Antenna System: Outage Probability Analysis |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2503.16751 |