346 citations · 868 across the 58 of their papers we have counts for
27 papers · 1 filter
Pinching Antenna-Assisted Full-Duplex Communication Systems
Xuan Li, Xianfu Lei, Mingjiang Wu +3
Full-duplex (FD) communication theoretically doubles spectral efficiency. Despite this potential, its practical performance is primarily constrained by severe self-interference (SI…
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…
Viterbi State Selection for Discrete Pinching Antenna Systems
Victoria E. Galanopoulou, Thrassos K. Oikonomou, Odysseas G. Karagiannidis +2
Pinching antennas enable dynamic control of electromagnetic wave propagation through reconfigurable radiating structures, but selecting an optimal subset of antennas remains a comb…
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…
Distributed Uplink Rate Splitting Multiple Access (DU-RSMA): Principles and Performance Analysis
Apostolos A. Tegos, Yue Xiao, Sotiris A. Tegos +2
One of the main goals of the upcoming sixth-generation (6G) wireless networks is the ability to support higher network density, while ensuring a high quality of service for each us…
Minimum Data Rate Maximization for Uplink Pinching-Antenna Systems
Sotiris A. Tegos, Panagiotis D. Diamantoulakis, Zhiguo Ding +1
This paper addresses, for the first time, the uplink performance optimization of multi-user pinching-antenna (PA) systems, recently developed for next-generation wireless networks.…
On the Design of Super Constellations
Thrassos K. Oikonomou, Dimitrios Tyrovolas, Sotiris A. Tegos +3
In the evolving landscape of sixth-generation (6G) wireless networks, which demand ultra high data rates, this study introduces the concept of super constellation communications. A…
Empowering Programmable Wireless Environments with Optical Anchor-based Positioning
Dimitrios Tyrovolas, Dimitrios Bozanis, Sotiris A. Tegos +5
The evolution toward sixth-generation (6G) wireless networks has introduced programmable wireless environments (PWEs) and reconfigurable intelligent surfaces (RISs) as transformati…
Waveform Design for Over-the-Air Computing
Nikos G. Evgenidis, Nikos A. Mitsiou, Sotiris A. Tegos +4
In response to the increasing number of devices expected in next-generation networks, a shift to over-the-air (OTA) computing has been proposed. By leveraging the superposition of…
On the Performance of RIS-assisted Networks with HQAM
Thrassos K. Oikonomou, Dimitrios Tyrovolas, Sotiris A. Tegos +4
In this paper, we investigate the application of hexagonal quadrature amplitude modulation (HQAM) in reconfigurable intelligent surface (RIS)-assisted networks, specifically focusi…
SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access
Sepideh Javadi, Sajad Faramarzi, Farshad Zeinali +5
Optical wireless communication (OWC) systems with multiple light-emitting diodes (LEDs) have recently been explored to support energy-limited devices via simultaneous lightwave inf…
Energy-aware Trajectory Optimization for UAV-mounted RIS and Full-duplex Relay
Dimitrios Tyrovolas, Nikos A. Mitsiou, Thomas G. Boufikos +6
In the evolving landscape of sixth-generation (6G) wireless networks, unmanned aerial vehicles (UAVs) have emerged as transformative tools for dynamic and adaptive connectivity. Ho…
Zero-Energy Reconfigurable Intelligent Surfaces (zeRIS)
Dimitrios Tyrovolas, Sotiris A. Tegos, Vasilis K. Papanikolaou +6
A primary objective of the forthcoming sixth generation (6G) of wireless networking is to support demanding applications, while ensuring energy efficiency. Programmable wireless en…
Accelerating Distributed Optimization via Over-the-Air Computing
Nikos A. Mitsiou, Pavlos S. Bouzinis, Panagiotis D. Diamantoulakis +2
Distributed optimization is ubiquitous in emerging applications, such as robust sensor network control, smart grid management, machine learning, resource slicing, and localization.…
Energy-Aware Design of UAV-mounted RIS Networks for IoT Data Collection
Dimitrios Tyrovolas, Prodromos Vasileios Mekikis, Sotiris A Tegos +3
Data collection in massive Internet of Things networks requires novel and flexible methods. Unmanned aerial vehicles (UAVs) are foreseen as a means to collect data rapidly even in…
Performance Analysis of Cascaded Reconfigurable Intelligent Surface Networks
Dimitrios Tyrovolas, Sotiris A Tegos, Emmanouela C Dimitriadou Panidou +3
Reconfigurable intelligent surfaces (RIS) have been presented as a solution to realize the concept of smart radio environments, wherein uninterrupted coverage and extremely high qu…
On the Ergodic Rate of Cognitive Radio Inspired Uplink Multiple Access
Xiao Yue, Sotiris A. Tegos, Panagiotis D. Diamantoulakis +2
With the exponential increase of the number of devices in the communication ecosystem toward the upcoming sixth generation (6G) of wireless networks, more enabling technologies and…
Synergetic UAV-RIS Communication with Highly Directional Transmission
Dimitrios Tyrovolas, Sotiris A. Tegos, Panagiotis D. Diamantoulakis +1
The effective integration of unmanned aerial vehicles (UAVs) in future wireless communication systems depends on the conscious use of their limited energy, which constrains their f…
Wireless Federated Learning (WFL) for 6G Networks -- Part II: The Compute-then-Transmit NOMA Paradigm
Pavlos S. Bouzinis, Panagiotis D. Diamantoulakis, George K. Karagiannidis
As it has been discussed in the first part of this work, the utilization of advanced multiple access protocols and the joint optimization of the communication and computing resourc…
On the Distribution of the Sum of Double-Nakagami-m Random Vectors and Application in Randomly Reconfigurable Surfaces
Sotiris A. Tegos, Dimitrios Tyrovolas, Panagiotis D. Diamantoulakis +2
Meta-surfaces intend to improve significantly the performance of future wireless networks by controlling the wireless propagation and shaping the radio waves according to the gener…
Ultra-small Cell Networks with Collaborative RF and Lightwave Power Transfer
Ha-Vu Tran, Georges Kaddoum, Panagiotis D. Diamantoulakis +2
This paper investigates a hybrid radio frequency (RF)/visible light communication (VLC) ultra-small cell network consisting of multiple optical angle-diversity transmitters, one mu…
Shadowed FSO/mmWave Systems with Interference
Imene Trigui, Panagiotis D. Diamantoulakis, Sofiene Affes +1
We investigate the performance of mixed free space optical (FSO)/millimeter-wave (mmWave) relay networks with interference at the destination. The FSO/mmWave channels are assumed t…
Interference-Free Transceiver Design and Signal Detection for Ambient Backscatter Communication Systems over Frequency-Selective Channels
Chong Zhang, Gongpu Wang, Panagiotis D. Diamantoulakis +2
In this letter, we study the ambient backscatter communication systems over frequency-selective channels. Specifically, we propose an interference-free transceiver design to facili…
Statistical Modeling of FSO Fronthaul Channel for Drone-based Networks
Marzieh Najafi, Hedieh Ajam, Vahid Jamali +3
We consider a drone-based communication network, where several drones hover above an area and serve as mobile remote radio heads for a large number of mobile users. We assume that…