346 citations · 868 across the 58 of their papers we have counts for
24 papers · 1 filter
Secure Near-Field ISAC with Pinching-Antenna Systems: Exploiting Constructive-Destructive Interference
Dimitrios Bozanis, Vasilis K. Papanikolaou, Sotiris A. Tegos +3
This paper investigates secure near-field integrated sensing and communication (ISAC) with pinching-antenna systems (PASS), where a base station serves legitimate users while local…
Curved Waveguide-Enabled Pinching-Antenna System (C-PAS): Communication Performance Analysis
Yayun Qu, Kunrui Cao, Tao Wang +5
Existing studies on the pinching-antenna system (PAS) assume that waveguides are deployed straight, which fails to serve communication regions with curved boundaries. To address th…
Vertical Pinching Antenna Systems (V-PAS) Aided UAV Communications
Tao Wang, Kunrui Cao, Yayun Qu +4
To address the limitation that existing horizontal pinching antenna systems (PAS) are primarily designed for ground users and confined to two-dimensional (2D) coverage, this paper…
Jacobi Elliptic Chirps for Sub-Nyquist Multi-Target Ranging
Dimitrios Bozanis, Thrassos K. Oikonomou, Sotiris A. Tegos +2
Sub-Nyquist sampling is an attractive way to reduce the hardware cost of wideband pulse-compression radar, but it introduces coherent alias-induced replicas in the matched-filter r…
Elliptic Range-Doppler Mapping for OFDM-ISAC under IQ Imbalance
Thrassos K. Oikonomou, Dimitrios Bozanis, Sotiris A. Tegos +2
Receiver in-phase/quadrature imbalance (IQI) couples each OFDM subcarrier with its mirror counterpart, creating ghost targets and degrading range-Doppler recovery in orthogonal fre…
Constellation Design for Robust Interference Mitigation
Athanasios T. Papadopoulos, Thrassos K. Oikonomou, Dimitrios Tyrovolas +4
This paper investigates symbol detection for single-carrier communication systems operating in the presence of additive interference with Nakagami-m statistics. Such interference d…
Improving Reliability of Hybrid Bit-Semantic Communications for Cellular Networks
Nikos G. Evgenidis, Sotiris A. Tegos, Panagiotis D. Diamantoulakis +2
Semantic communications (SemComs) have been considered as a promising solution to reduce the amount of transmitted information, thus paving the way for more energy-and spectrum-eff…
Pinching Antenna-aided NOMA Systems with Internal Eavesdropping
Haolian Chi, Kunrui Cao, Zhou Su +4
As a novel member of flexible antennas, the pinching antenna (PA) is realized by integrating small dielectric particles on a waveguide, offering unique regulatory capabilities on c…
Physical Layer Security with Artificial Noise in MIMO Pinching-Antenna Systems
Pigi P. Papanikolaou, Dimitrios Bozanis, Sotiris A. Tegos +3
As next-generation wireless networks emerge, security is becoming a critical performance metric. However, conventional multiple-input-multiple-output (MIMO) systems often suffer fr…
Constellation Design and Detection under Generalized Hardware Impairments
Thrassos K. Oikonomou, Dimitrios Tyrovolas, Sotiris A. Tegos +3
This paper presents a maximum-likelihood detection framework that jointly mitigates hardware (HW) impairments in both amplitude and phase. By modeling transceiver distortions as re…
Performance Analysis of Wireless-Powered Pinching Antenna Systems
Kunrui Cao, Jingyu Chen, Panagiotis D. Diamantoulakis +4
Pinching antenna system (PAS) serves as a groundbreaking paradigm that enhances wireless communications by flexibly adjusting the position of pinching antenna (PA) and establishing…
RIS-Assisted 3D Spherical Splatting for Object Composition Visualization using Detection Transformers
Anastasios T. Sotiropoulos, Stavros Tsimpoukis, Dimitrios Tyrovolas +4
The pursuit of immersive and structurally aware multimedia experiences has intensified interest in sensing modalities that reconstruct objects beyond the limits of visible light. C…
Uplink RSMA for Pinching-Antenna Systems
Apostolos A. Tegos, Yue Xiao, Sotiris A. Tegos +2
One of the key goals of next-generation wireless networks is to adapt to changing conditions and meet the growing demand for reliable, high-capacity communications from emerging ap…
Beamforming Design for Pinching Antenna Systems with Multiple Receive Antennas
Enzhi Zhou, Yue Xiao, Ziyue Liu +3
Next-generation networks require intelligent and robust channel conditions to support ultra-high data rates, seamless connectivity, and large-scale device deployments in dynamic en…
OFDMA for Pinching Antenna Systems
Thrassos K. Oikonomou, Sotiris A. Tegos, Panagiotis D. Diamantoulakis +2
Pinching-antenna (PA) systems route millimeter wave (mmWave) signals through a leaky waveguide and radiate them at "pinch" apertures, offering low-cost line-of-sight (LoS) coverage…
Resolving the Double Near-Far Problem via Wireless Powered Pinching-Antenna Networks
Vasilis K. Papanikolaou, Gui Zhou, Brikena Kaziu +4
This letter introduces a novel wireless powered communication system, referred to as a wireless powered pinching-antenna network (WPPAN), utilizing a single waveguide with pinching…
Secrecy Rate Maximization with Artificial Noise for Pinching-Antenna Systems
Pigi P. Papanikolaou, Dimitrios Bozanis, Sotiris A. Tegos +2
Security is emerging as a critical performance metric for next-generation wireless networks, but conventional multiple-input-multiple-output (MIMO) systems often suffer from severe…
Cross-Band Modulation Design for Hybrid RF-Optical Systems
Thrassos K. Oikonomou, Sotiris A. Tegos, Panagiotis D. Diamantoulakis +1
We present a novel cross-band modulation framework that combines 3D modulation in the RF domain with intensity modulation and direct detection in the optical domain, the first such…
Hybrid Semantic-Shannon Communications
Nikos G. Evgenidis, Nikos A. Mitsiou, Sotiris A. Tegos +4
Semantic communications are considered a promising beyond-Shannon/bit paradigm to reduce network traffic and increase reliability, thus making wireless networks more energy efficie…
XR-RF Imaging Enabled by Software-Defined Metasurfaces and Machine Learning: Foundational Vision, Technologies and Challenges
C. Liaskos, A. Tsioliaridou, K. Georgopoulos +18
We present a new approach to Extended Reality (XR), denoted as iCOPYWAVES, which seeks to offer naturally low-latency operation and cost-effectiveness, overcoming the critical scal…
Wireless Quantized Federated Learning: A Joint Computation and Communication Design
Pavlos S. Bouzinis, Panagiotis D. Diamantoulakis, George K. Karagiannidis
Recently, federated learning (FL) has sparked widespread attention as a promising decentralized machine learning approach which provides privacy and low delay. However, communicati…
Statistical Modeling of the FSO Fronthaul Channel for UAV-based Communications
Marzieh Najafi, Hedieh Ajam, Vahid Jamali +3
In this paper, we investigate the statistics of the free space optics (FSO) communication channel between a hovering unmanned aerial vehicle (UAV) and a central unit. Two unique ch…
Resource Allocation in Wireless Networks with Energy Constraints
Panagiotis D. Diamantoulakis
This dissertation focuses on the development of novel scheduling and resource allocation schemes, which take into account and regulate the energy constraints imposed by the levels…
Non-Orthogonal Multiple Access for FSO Backhauling
Marzieh Najafi, Vahid Jamali, Panagiotis D. Diamantoulakis +2
We consider a free space optical (FSO) backhauling system which consists of two base stations (BSs) and one central unit (CU). We propose to employ non-orthogonal multiple access (…