Tang, B;
Xu, H;
Wong, KK;
Meng, K;
Murch, R;
Chae, CB;
Zhang, Y;
(2025)
On ISAC Performance with Full-Duplex FAS-assisted BS.
In:
Proceedings of the 2025 IEEE 26th International Workshop on Signal Processing and Artificial Intelligence for Wireless Communications (SPAWC).
IEEE: Surrey, UK.
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Abstract
This paper studies the integrated sensing and communication (ISAC) performance of a full-duplex network assisted by fluid antenna systems (FAS). The base station (BS) operates in full-duplex mode and employs planar FASs for both transmission and reception. It simultaneously communicates with a downlink user, an uplink user, and performs target sensing. Our objective is to maximize the overall communication rate while ensuring the sensing requirements. Due to the non-convex and intractable nature of the optimization problem, we first reformulate it using the fractional programming (FP) framework. Subsequently, we iteratively optimize the antenna positions of both transmit and receive FASs, the beamforming vectors, and the uplink transmit power. The antenna position optimization subproblems are converted into convex quadratically constrained quadratic programs (QCQPs) and solved via the successive convex approximation (SCA) method. Simulation results demonstrate that the FAS significantly outperforms traditional fixed-position antenna systems by achieving higher communication rates.
| Type: | Proceedings paper |
|---|---|
| Title: | On ISAC Performance with Full-Duplex FAS-assisted BS |
| Event: | 2025 IEEE 26th International Workshop on Signal Processing and Artificial Intelligence for Wireless Communications (SPAWC) |
| Dates: | 7 Jul 2025 - 10 Jul 2025 |
| ISBN-13: | 978-1-6654-7776-5 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/SPAWC66079.2025.11143532 |
| Publisher version: | https://doi.org/10.1109/spawc66079.2025.11143532 |
| 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 system, ISAC, full-duplex, fractional programming, successive convex approximation (SCA) |
| 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/10215485 |
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