Location-driven Programmable Wireless Environments through Light-emitting RIS (LeRIS)

Bozanis D, Tyrovolas D, Papanikolaou VK, Tegos SA, Diamantoulakis PD, Liaskos CK, Schober R, Karagiannidis GK (2026)

Publication Type: Journal article

Publication year: 2026

Journal

IEEE Transactions on Wireless Communications Institute of Electrical and Electronics Engineers (IEEE)

DOI: 10.1109/TWC.2026.3684685

Abstract

As 6G wireless networks seek to enable robust and dynamic programmable wireless environments (PWEs), reconfigurable intelligent surfaces (RISs) have emerged as a cornerstone for controlling electromagnetic wave propagation. However, realizing the potential of RISs for demanding PWE applications depends on precise and real-time user localization, especially in scenarios with random receiver orientations and inherent hardware imperfections. To address this challenge, we propose a novel optical localization framework that integrates conventional ceiling-mounted LEDs with light-emitting reconfigurable intelligent surfaces (LeRISs). By leveraging the spatial diversity offered by the LeRIS architecture, the framework introduces robust signal paths that improve localization accuracy and reduce errors under varying orientations. To this end, we derive a system of equations for received signal strength-based localization that accounts for random receiver orientations and imposes spatial constraints on LED placement, ensuring unique and reliable solutions. Finally, our simulation results demonstrate that the proposed framework achieves precise beam control and high spectral efficiency even for RISs with large number of reflecting elements by tightly coupling the localization process with the beamforming configuration, allowing accurate direction estimation and robust PWE operation.

Authors with CRIS profile

Vasileios Papanikolaou Lehrstuhl für Digitale Übertragung (IDC) Robert Schober Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

Aristotle University of Thessaloniki GR Greece (GR) University of Ioannina / Πανεπιστήμιο Ιωαννίνων GR Greece (GR)

How to cite

APA:

Bozanis, D., Tyrovolas, D., Papanikolaou, V.K., Tegos, S.A., Diamantoulakis, P.D., Liaskos, C.K.,... Karagiannidis, G.K. (2026). Location-driven Programmable Wireless Environments through Light-emitting RIS (LeRIS). IEEE Transactions on Wireless Communications. https://doi.org/10.1109/TWC.2026.3684685

MLA:

Bozanis, Dimitrios, et al. "Location-driven Programmable Wireless Environments through Light-emitting RIS (LeRIS)." IEEE Transactions on Wireless Communications (2026).

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