12 papers
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…
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…
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…
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…
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…
Integrated Localization, Mapping, and Communication through VCSEL-Based Light-emitting RIS (LeRIS)
Rashid Iqbal, Dimitrios Bozanis, Dimitrios Tyrovolas +5
Light-emitting reconfigurable intelligent surfaces (LeRISs) have recently emerged as a promising solution for providing the spatial awareness required for reliable millimeter-wave…
Cramér-Rao Bounds for Integrated Sensing and Communications in Pinching-Antenna Systems
Dimitrios Bozanis, Vasilis K. Papanikolaou, Sotiris A. Tegos +1
Pinching-antenna systems (PASs) have recently emerged as a flexible, cost-effective route to large-scale antenna deployments envisioned for integrated sensing and communications (I…
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…
Location-Driven Programmable Wireless Environments through Light-emitting RIS (LeRIS)
Dimitrios Bozanis, Dimitrios Tyrovolas, Vasilis K. Papanikolaou +5
As 6G wireless networks seek to enable robust and dynamic programmable wireless environments (PWEs), reconfigurable intelligent surfaces (RISs) have emerged as a cornerstone for co…
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…