Zhou, L;
Yao, J;
Jin, M;
Wu, T;
Wong, KK;
(2024)
Fluid Antenna-Assisted ISAC Systems.
IEEE Wireless Communications Letters
10.1109/LWC.2024.3476148.
(In press).
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Abstract
This letter proposes a fluid antenna-assisted integrated sensing and communication (ISAC) system, where a base station (BS) transmits signals to a communication user (CU) while sensing a target. Unlike traditional ISAC systems with fixed-position antennas (FPAs), fluid antennas are equipped at the BS and CU, and can be dynamically adjusted within a given area. Our objective is to jointly optimize the transmit beamforming and the locations of fluid antennas at the BS and CU to maximize the downlink communication rate while ensuring the requirements of the sensing beampattern gain and transmit power of the BS. Due to the non-convex nature of the original problem and the high coupling between variables, we employ an alternating optimization (AO) algorithm, dividing it into three subproblems and transforming them into convex ones for solution. Simulation results confirm that our proposed system significantly improves the performance of ISAC systems compared to benchmarks.
| Type: | Article |
|---|---|
| Title: | Fluid Antenna-Assisted ISAC Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LWC.2024.3476148 |
| Publisher version: | http://dx.doi.org/10.1109/lwc.2024.3476148 |
| 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: | Fluid antenna, integrated sensing and communication (ISAC), alternating optimization (AO) |
| 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/10199665 |
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