Ye, Y;
You, L;
Xu, H;
Elzanaty, A;
Wong, KK;
Gao, X;
(2025)
SCNR Maximization for MIMO ISAC Assisted by Fluid Antenna System.
IEEE Transactions on Vehicular Technology
10.1109/TVT.2025.3557859.
(In press).
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Abstract
The integrated sensing and communication (ISAC) technology has been extensively researched to enhance communication rates and radar sensing capabilities. Additionally, a new technology known as fluid antenna system (FAS) has recently been proposed to obtain higher communication rates for future wireless networks by dynamically altering the antenna position to obtain a more favorable channel condition. The application of the FAS technology in ISAC scenarios holds significant research potential. In this paper, we investigate a FAS-assisted multiple-input multiple output (MIMO) ISAC system for maximizing the radar sensing signal-clutter-noise ratio (SCNR) under communication signal-to-interference-plus-noise ratio (SINR) and antenna position constraints. We devise an iterative algorithm that tackles the optimization problem by maximizing a lower bound of SCNR with respect to the transmit precoding matrix and the antenna position. By addressing the non-convexity of the problem through this iterative approach, our method significantly improves the SCNR. Our simulation results demonstrate that the proposed scheme achieves a higher SCNR compared to the baselines.
Type: | Article |
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Title: | SCNR Maximization for MIMO ISAC Assisted by Fluid Antenna System |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1109/TVT.2025.3557859 |
Publisher version: | https://doi.org/10.1109/TVT.2025.3557859 |
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, MIMO, integrated sensing and communication, antenna position optimization. |
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/10207800 |
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