On Performance of RIS-Aided Fluid Antenna Systems
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909119946948608 |
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| author | Ghadi, Farshad Rostami Wong, Kai-Kit New, Wee Kiat Xu, Hao Murch, Ross Zhang, Yangyang |
| author_facet | Ghadi, Farshad Rostami Wong, Kai-Kit New, Wee Kiat Xu, Hao Murch, Ross Zhang, Yangyang |
| contents | This letter studies the performance of reconfigurable intelligent surface (RIS)-aided communications for a fluid antenna system (FAS) enabled receiver. Specifically, a fixed singleantenna base station (BS) transmits information through a RIS to a mobile user (MU) which is equipped with a planar fluid antenna in the absence of a direct link.We first analyze the spatial correlation structures among the positions (or ports) in the planar FAS, and then derive the joint distribution of the equivalent channel gain at the user by exploiting the central limit theorem. Furthermore, we obtain compact analytical expressions for the outage probability (OP) and delay outage rate (DOR). Numerical results illustrate that using FAS with only one activated port into the RIS-aided communication network can greatly enhance the performance, when compared to traditional antenna systems (TAS). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_16116 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On Performance of RIS-Aided Fluid Antenna Systems Ghadi, Farshad Rostami Wong, Kai-Kit New, Wee Kiat Xu, Hao Murch, Ross Zhang, Yangyang Information Theory Signal Processing This letter studies the performance of reconfigurable intelligent surface (RIS)-aided communications for a fluid antenna system (FAS) enabled receiver. Specifically, a fixed singleantenna base station (BS) transmits information through a RIS to a mobile user (MU) which is equipped with a planar fluid antenna in the absence of a direct link.We first analyze the spatial correlation structures among the positions (or ports) in the planar FAS, and then derive the joint distribution of the equivalent channel gain at the user by exploiting the central limit theorem. Furthermore, we obtain compact analytical expressions for the outage probability (OP) and delay outage rate (DOR). Numerical results illustrate that using FAS with only one activated port into the RIS-aided communication network can greatly enhance the performance, when compared to traditional antenna systems (TAS). |
| title | On Performance of RIS-Aided Fluid Antenna Systems |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2402.16116 |