12 papers
Non-Uniform Codebook Design for Optical IRS-Assisted VLC Systems
Rashid Iqbal, Dimitrios Bozanis, Dimitrios Tyrovolas +4
Optical intelligent reflecting surfaces (OIRS) can improve the coverage of indoor visible light communication (VLC) systems, however, practical deployment requires a finite offline…
Quantized Zero-Energy RIS: Residual Phase Modeling and Outage Analysis
Dimitrios Tyrovolas, Sotiris A. Tegos, Kunrui Cao +6
Zero-energy reconfigurable intelligent surfaces (zeRISs) have recently emerged as a promising solution for enabling energy-efficient and scalable programmable wireless environments…
SCROOGE: A Physics-Aware Framework for Efficient Orchestration of RIS-Assisted Networks
Alexandros I. Papadopoulos, Sotiris Kopsinos, Dimitrios Tyrovolas +4
Reconfigurable Intelligent Surfaces (RISs) are emerging as a key enabler of Programmable Wireless Environments for 6G, but their practical integration into operational networks sti…
Enabling mmWave Communications with VCSEL-Based Light-Emitting Reconfigurable Intelligent Surfaces
Rashid Iqbal, Dimitrios Bozanis, Dimitrios Tyrovolas +4
This paper proposes a light-emitting reconfigurable intelligent surface (LeRIS) architecture that integrates vertical cavity surface-emitting lasers (VCSELs) to jointly support use…
RF-Fencing: A Novel RIS-Based Service for Proactive Covert Communications
Alexandros I. Papadopoulos, Dimitrios Tyrovolas, Alexandros Pitilakis +6
Programmable wireless environments (PWEs), empowered by reconfigurable intelligent surfaces (RISes), have emerged as a transformative paradigm for next-generation networks, enablin…
Ergodic Rate Analysis of Two-State Pinching-Antenna Systems
Dimitrios Tyrovolas, Sotiris A. Tegos, Yue Xiao +5
Flexible Antenna Systems (FAS) are a key enabler of next-generation wireless networks, allowing the antenna aperture to be dynamically reconfigured to adapt to channel conditions a…