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Outage Performance of Fluid Antenna System with Uniform Linear Array Port Configuration

Huangfu, Jiangsheng; Song, Zhengyu; Hou, Tianwei; Li, Anna; Liu, Yuanwei; Nallanathan, Arumugam; Wong, Kai-Kit; (2025) Outage Performance of Fluid Antenna System with Uniform Linear Array Port Configuration. In: ICC 2025 - IEEE International Conference on Communications. (pp. pp. 6517-6522). IEEE: Montreal, QC, Canada. Green open access

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Abstract

Fluid antenna systems (FAS) are among the most promising technologies for the sixth generation (6G) mobile communication networks. A FAS possesses position reconfigurability to switch on-demand among N predefined ports over a prescribed space. This paper explores the performance of a singleinput single-output (SISO) model with a fixed-position antenna transmitter and a single-antenna FAS receiver, referred to as the Rx-SISO-FAS model, under spatially-correlated Rician fading channels. Our contributions include exact expressions and closedform bounds for the outage probability of the Rx-SISO-FAS model with uniform linear array port configuration. To gain insights, we evaluate the diversity order of the proposed model and our analytical results indicate that with a fixed overall system size, increasing the number of ports, N, significantly decreases the outage performance of FAS under different Rician fading factors. Our numerical results further demonstrate that: i) the Rx-SISO-FAS model can enhance performance under spatiallycorrelated Rician fading channels over the fixed-position antenna counterpart; ii) the Rician factor negatively impacts performance in the low signal-to-noise ratio (SNR) regime.

Type: Proceedings paper
Title: Outage Performance of Fluid Antenna System with Uniform Linear Array Port Configuration
Event: ICC 2025 - IEEE International Conference on Communications
Dates: 8 Jun 2025 - 12 Jun 2025
ISBN-13: 979-8-3315-0521-9
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC52391.2025.11161851
Publisher version: https://doi.org/10.1109/icc52391.2025.11161851
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Wireless communication; Fluids; Transmitting antennas; Rician channels; Receiving antennas; Switches; Numerical models; Space exploration; Linear antenna arrays; Signal to noise ratio
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10215961
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