Ghadi, FR;
Wong, KK;
Kaveh, M;
Xu, H;
New, WK;
Javier Lopez-Martinez, F;
Shin, H;
(2025)
Fluid Antenna Multiple Access with Simultaneous Non-unique Decoding in Strong Interference Channel.
IEEE Transactions on Wireless Communications
10.1109/TWC.2025.3578280.
(In press).
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Abstract
Fluid antenna system (FAS) is gaining attention as an innovative technology for boosting diversity and multiplexing gains. As a key innovation, it presents the possibility to overcome interference by position reconfigurability on one radio frequency (RF) chain, giving rise to the concept of fluid antenna multiple access (FAMA). While FAMA is originally designed to deal with interference mainly by position change and treat interference as noise, this is not rate optimal, especially when suffering from a strong interference channel (IC) where all positions have strong interference. To tackle this, this paper considers a two-user strong IC where FAMA is used in conjunction with simultaneous nonunique decoding (SND). Specifically, we analyze the key statistics for the signal-to-noise ratio (SNR) and interference-to-noise ratio (INR) for a canonical two-user IC setup, and subsequently derive the delay outage rate (DOR), outage probability (OP) and ergodic capacity (EC) of the FAMA-IC. Our numerical results illustrate huge benefits of FAMA with SND over traditional fixed-position antenna systems (TAS) with SND in the fading IC.
| Type: | Article |
|---|---|
| Title: | Fluid Antenna Multiple Access with Simultaneous Non-unique Decoding in Strong Interference Channel |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TWC.2025.3578280 |
| Publisher version: | https://doi.org/10.1109/TWC.2025.3578280 |
| 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: | Interference, Antennas, Receivers, Fluids, Transmitters, Wireless communication, Signal to noise ratio, Interference cancellation, Decoding, Correlation |
| 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/10210651 |
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