eprintid: 10193015 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/19/30/15 datestamp: 2024-06-04 09:41:25 lastmod: 2024-06-04 09:41:25 status_changed: 2024-06-04 09:41:25 type: article metadata_visibility: show sword_depositor: 699 creators_name: Ghadi, Farshad Rostami creators_name: Wong, Kai-Kit creators_name: New, Wee Kiat creators_name: Xu, Hao creators_name: Murch, Ross creators_name: Zhang, Yangyang title: On Performance of RIS-Aided Fluid Antenna Systems ispublished: inpress divisions: UCL divisions: B04 divisions: C05 divisions: F46 keywords: Reconfigurable intelligent surfaces, Antennas, Fluids, Correlation, Signal to noise ratio, Wireless communication, Transmission line matrix methods note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: This letter studies the performance of reconfigurable intelligent surface (RIS)-aided communications for a fluid antenna system (FAS) enabled receiver. Specifically, a fixed single-antenna base station (BS) transmits information through a RIS to a mobile user 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). date: 2024 date_type: published publisher: Institute of Electrical and Electronics Engineers (IEEE) official_url: http://dx.doi.org/10.1109/lwc.2024.3405636 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2281659 doi: 10.1109/lwc.2024.3405636 lyricists_name: Wong, Kai-Kit lyricists_name: Xu, Hao lyricists_id: KWONG98 lyricists_id: HXUCX90 actors_name: Wong, Kai-Kit actors_id: KWONG98 actors_role: owner full_text_status: public publication: IEEE Wireless Communications Letters issn: 2162-2337 citation: Ghadi, Farshad Rostami; Wong, Kai-Kit; New, Wee Kiat; Xu, Hao; Murch, Ross; Zhang, Yangyang; (2024) On Performance of RIS-Aided Fluid Antenna Systems. IEEE Wireless Communications Letters 10.1109/lwc.2024.3405636 <https://doi.org/10.1109/lwc.2024.3405636>. (In press). Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10193015/1/WCL2024-FAS-RIS-R1.v1.pdf