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Electromagnetic Modeling of Deformation-Based Pinching Antennas
Dimitrios Tyrovolas, Nikos C. Sagias, Ke Guan +2
Pinching-antenna systems (PAS) rely on local perturbations of a guiding structure to radiate part of the guided electromagnetic energy, making the physical response of the resultin…
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…
Secure ISAC with Sensing Privacy under Eavesdropper Uncertainty
Pigi P. Papanikolaou, Dimitrios Bozanis, Sotiris A. Tegos +2
This paper investigates the joint protection of confidential data and legitimate-user directional information in integrated sensing and communication (ISAC) networks. We consider a…
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…
Electromagnetic Twin: Completing the Wireless World from Sparse Channel Evidence
Tuo Wu, Jie Tang, Kangda Zhi +5
Acquiring dense channel information over many locations and beams incurs considerable pilot and processing overhead. Radio maps and channel knowledge maps (CKMs) reduce this overhe…
Toward Intelligent Skies: Signal Processing and AI Foundations of Low-Altitude Wireless Networks
Weijie Yuan, Geng Sun, Jiacheng Wang +7
The rapid growth of low-altitude aerial services and applications, driven by uncrewed aerial vehicles (UAVs), calls for a new class of digital infrastructure beyond conventional te…
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…
Beyond the RF Paradigm: Rydberg Atomic Receivers for Next-Generation IoT
Qihao Peng, Qu Luo, Dongnan Xia +11
Next-generation Internet-of-Things (IoT) is evolving toward a ubiquitous, ultra-low-power, and multi-band heterogeneous networking paradigm that seamlessly integrates terrestrial,…
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…
Modeling UAV-aided Roadside Cell-Free Networks with Matérn Hard-Core Point Processes
Chenrui Qiu, Yongxu Zhu, Bo Tan +2
This paper investigates a uncrewed aerial vehicles (UAV)-assisted cell-free architecture for vehicular networks in road-constrained environments. Roads are modeled using a Poisson…
Physics-Aware RIS Codebook Compilation for Near-Field Beam Focusing under Mutual Coupling and Specular Reflections
Alexandros I. Papadopoulos, Maria Anna Pistela, Dimitrios Tyrovolas +5
Next-generation wireless networks are envisioned to achieve reliable, low-latency connectivity within environments characterized by strong multipath and severe channel variability.…
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…
Fronthaul-Efficient Distributed Cooperative 3D Positioning with Quantized Latent CSI Embeddings
Tong An, Jiwei Zhao, Jiayang Shi +5
High-precision three-dimensional (3D) positioning in dense urban non-line-of-sight (NLOS) environments benefits significantly from cooperation among multiple distributed base stati…
A Survey of Pinching-Antenna Systems (PASS)
Yuanwei Liu, Hao Jiang, Xu Gan +10
The pinching-antenna system (PASS), recently proposed as a flexible-antenna technology, has been regarded as a promising solution for several challenges in next-generation wireless…
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…