Yang, J;
Li, A;
Liao, X;
Masouros, C;
Swindlehurst, AL;
(2025)
Beyond Diagonal RIS Aided Power Minimization Beamforming for MIMO Systems.
In:
Proceedings of the IEEE International Conference on Communications Workshops (ICC Workshops) 2025.
(pp. pp. 1821-1826).
IEEE
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Abstract
Beyond diagonal reconfigurable intelligent surfaces (BD-RIS) with interconnected reflecting elements present an emerging technology for manipulating the propagation environment, and their new structure requires careful investigation. In this paper, we explore BD-RIS-aided power minimization beamforming, where the BD-RIS scattering matrix and transmit beamforming are jointly optimized under nonconvex constraints related to signal-to-interference-plus-noise ratio (SINR) thresholds and the structure of the scattering matrix. To efficiently solve the problem, we propose a single-loop algorithm, where we adopt a variable splitting strategy with an auxiliary variable to split the scattering matrix, and then alternately update the resulting variables. Through further derivations, we show that each nonconvex subproblem can be solved efficiently. Simulation results demonstrate the high efficiency of our proposed single-loop algorithm and the effectiveness of BD-RIS in improving performance.
| Type: | Proceedings paper |
|---|---|
| Title: | Beyond Diagonal RIS Aided Power Minimization Beamforming for MIMO Systems |
| Event: | 2025 IEEE International Conference on Communications Workshops (ICC Workshops) |
| Location: | Montreal, QC, Canada |
| Dates: | 8th-12th June 2025 |
| ISBN-13: | 979-8-3315-9624-8 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICCWorkshops67674.2025.11162302 |
| Publisher version: | https://doi.org/10.1109/iccworkshops67674.2025.111... |
| 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 > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10219240 |
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