1 citations · 2 across the 13 of their papers we have counts for
15 papers
Robust Beamforming for Cell-Free Systems with Parallel-Plate-Waveguided Dynamic Metasurfaces
Konstantinos D. Katsanos, Panagiotis Gavriilidis, George C. Alexandropoulos
Dynamic Metasurface Antennas (DMAs) constitute a promising solution for extremely large antenna arrays, requiring lower power consumption and reduced hardware cost as compared to c…
Decentralized Cooperative Beamforming for BDRIS-Assisted Cell-Free MIMO OFDM Systems
Konstantinos D. Katsanos, George C. Alexandropoulos
In this paper, a wideband cell-free multi-stream multi-user Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system is considered operating w…
Robust Consensus-Based Distributed Beamforming for Wideband Cell-free Multi-RIS MISO Systems
Konstantinos D. Katsanos, George C. Alexandropoulos
The cell-free networking paradigm constitutes a revolutionary architecture for future generations of wireless networks, which has been recently considered in synergy with Reconfigu…
RIS-Aided Localization and Sensing
Dimitris Kompostiotis, Dimitris Vordonis, Konstantinos D. Katsanos +3
High-precision localization and environmental sensing are essential for a new wave of applications, ranging from industrial automation and autonomous systems to augmented reality a…
Receiving RISs: Enabling Channel Estimation and Autonomous Configuration
George C. Alexandropoulos, Konstantinos D. Katsanos, Evangelos Vlachos
This chapter focuses on a hardware architecture for semi-passive Reconfigurable Intelligent Surfaces (RISs) and investigates its consideration for boosting the performance of Multi…
The Interference Broadcast Channel with Reconfigurable Intelligent Surfaces: A Cooperative Sum-Rate Maximization Approach
Konstantinos D. Katsanos, Paolo Di Lorenzo, George C. Alexandropoulos
This paper studies the interference broadcast channel comprising multiple multi-antenna Base Stations (BSs), each controlling a beyond diagonal Reconfigurable Intelligent Surface (…
Multi-RIS-Empowered Multiple Access: A Distributed Sum-Rate Maximization Approach
Konstantinos D. Katsanos, Paolo Di Lorenzo, George C. Alexandropoulos
The plethora of wirelessly connected devices, whose deployment density is expected to largely increase in the upcoming sixth Generation (6G) of wireless networks, will naturally ne…
Power Minimizing MEC Offloading with QoS Constraints over RIS-Empowered Communications
Mattia Merluzzi, Francesca Costanzo, Konstantinos D. Katsanos +2
This work lies at the intersection of two cutting edge technologies envisioned to proliferate in future 6G wireless systems: Multi-access Edge Computing (MEC) and Reconfigurable In…
Spatial Secrecy Spectral Efficiency Optimization Enabled by Reconfigurable Intelligent Surfaces
Konstantinos D. Katsanos, George C. Alexandropoulos
Reconfigurable Intelligent Surfaces (RISs) constitute a strong candidate physical-layer technology for the -th Generation (6G) of wireless networks, offering new design degrees…
RIS-Enabled Smart Wireless Environments: Deployment Scenarios, Network Architecture, Bandwidth and Area of Influence
George C. Alexandropoulos, Dinh-Thuy Phan-Huy, Kostantinos D. Katsanos +19
Reconfigurable Intelligent Surfaces (RISs) constitute the key enabler for programmable electromagnetic propagation environments, and are lately being considered as a candidate phys…
Counteracting Eavesdropper Attacks Through Reconfigurable Intelligent Surfaces: A New Threat Model and Secrecy Rate Optimization
George C. Alexandropoulos, Konstantinos D. Katsanos, Miaowen Wen +1
The potential of Reconfigurable Intelligent Surfaces (RISs) for energy-efficient and performance-boosted wireless communications is recently gaining remarkable research attention,…
Distributed Sum-Rate Maximization of Cellular Communications with Multiple Reconfigurable Intelligent Surfaces
Konstantinos D. Katsanos, Paolo Di Lorenzo, George C. Alexandropoulos
The technology of Reconfigurable Intelligent Surfaces (RISs) has lately attracted considerable interest from both academia and industry as a low-cost solution for coverage extensio…
Smart Wireless Environments Enabled by RISs: Deployment Scenarios and Two Key Challenges
George C. Alexandropoulos, Maurizio Crozzoli, Dinh-Thuy Phan-Huy +9
Reconfigurable Intelligent Surfaces (RISs) constitute the enabler for programmable propagation of electromagnetic signals, and are lately being considered as a candidate physical-l…
Wideband Multi-User MIMO Communications with Frequency Selective RISs: Element Response Modeling and Sum-Rate Maximization
Konstantinos D. Katsanos, Nir Shlezinger, Mohammadreza F. Imani +1
Reconfigurable Intelligent Surfaces (RISs) are an emerging technology for future wireless communication systems, enabling improved coverage in an energy efficient manner. RISs are…
Safeguarding MIMO Communications with Reconfigurable Metasurfaces and Artificial Noise
George C. Alexandropoulos, Konstantinos Katsanos, Miaowen Wen +1
Wireless communications empowered by Reconfigurable Intelligent (meta)Surfaces (RISs) are recently gaining remarkable research attention due to the increased system design flexibil…