Wong, KK;
Wang, C;
Zhang, H;
Li, G;
Wang, CC;
Chae, CB;
Murch, R;
(2024)
Virtual FAS by Learning-Based Imaginary Antennas.
IEEE Wireless Communications Letters
p. 1.
10.1109/LWC.2024.3382220.
(In press).
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Abstract
Fluid antenna system (FAS) represents a new technology able to flexibly and instantaneously change the antenna position for optimizing wireless communication performance. The high-resolution adjustment of the antenna position is what makes FAS powerful in taking full advantage of the fading variation in space. To obtain the benefits of FAS but without the complication of implementing FAS, this letter considers a mobile receiver with several fixed-position antennas and employs a transformer-based signal prediction network to deduce the received signals at other positions. This is possible since the received signals are correlated in space. The outcome is an increased dimension multiple-input multiple-output (MIMO) receiver which can be interpreted as a virtual FAS with imaginary antennas. We evaluate the proposed system in multiuser channels and adopt regularized zeroforcing (RZF) in the virtual FAS to deal with the interference. Simulation results demonstrate that the proposed virtual FAS outperforms significantly the original fixed-position MIMO system.
Type: | Article |
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Title: | Virtual FAS by Learning-Based Imaginary Antennas |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1109/LWC.2024.3382220 |
Publisher version: | http://dx.doi.org/10.1109/lwc.2024.3382220 |
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. |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science 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/10191112 |
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