eprintid: 10188057 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/18/80/57 datestamp: 2024-02-28 11:36:34 lastmod: 2024-02-28 11:36:34 status_changed: 2024-02-28 11:36:34 type: article metadata_visibility: show sword_depositor: 699 creators_name: Zheng, Jianchao creators_name: Wu, Tuo creators_name: Lai, Xiazhi creators_name: Pan, Cunhua creators_name: Elkashlan, Maged creators_name: Wong, Kai-Kit title: FAS-assisted NOMA Short-Packet Communication Systems ispublished: inpress divisions: UCL divisions: B04 divisions: C05 divisions: F46 keywords: Block error rate (BLER); flexible-position antenna; fluid antenna system (FAS); non-orthogonal multiple access (NOMA); short-packet communication note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: In this letter, we investigate a fluid antenna system (FAS)-assisted downlink non-orthogonal multiple access (NOMA) for short-packet communications. The base station (BS) adopts a single fixed antenna, while both the central user (CU) and the cell-edge user (CEU) are equipped with a FAS. Each FAS comprises N flexible positions (also known as ports), linked to N arbitrarily correlated Rayleigh fading channels. We derive expressions for the average block error rate (BLER) of the FAS-assisted NOMA system and provide asymptotic BLER expressions. We determine that the diversity order for CU and CEU is N , indicating that the system performance can be considerably improved by increasing N . Simulation results validate the great performance of FAS. date: 2024-02-06 date_type: published publisher: Institute of Electrical and Electronics Engineers (IEEE) official_url: http://dx.doi.org/10.1109/tvt.2024.3363115 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2252218 doi: 10.1109/TVT.2024.3363115 lyricists_name: Wong, Kai-Kit lyricists_id: KWONG98 actors_name: Wong, Kai-Kit actors_id: KWONG98 actors_role: owner full_text_status: public publication: IEEE Transactions on Vehicular Technology pagerange: 1-6 issn: 0018-9545 citation: Zheng, Jianchao; Wu, Tuo; Lai, Xiazhi; Pan, Cunhua; Elkashlan, Maged; Wong, Kai-Kit; (2024) FAS-assisted NOMA Short-Packet Communication Systems. IEEE Transactions on Vehicular Technology pp. 1-6. 10.1109/TVT.2024.3363115 <https://doi.org/10.1109/TVT.2024.3363115>. (In press). Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10188057/1/VT-2023-05150.pdf