155 citations · 164 across the 24 of their papers we have counts for
26 papers
Micro-Doppler Sensing for UAV Flight-State Estimation in ISAC Networks
Henglin Pu, Lu Su, Zhu Han +2
Integrated sensing and communication (ISAC) provides a promising foundation for low-altitude unmanned aerial vehicle (UAV) monitoring. However, most existing studies focus primaril…
Generative Control of Time-Modulated Intelligent Reflecting Surfaces for Scalable Directional Modulation
Kailong Wang, Sida Xiang, Athina Petropulu
Time-modulated intelligent reflecting surfaces (TM-IRS) achieve directional modulation by switching their elements on and off at designed instants and durations, so that an undisto…
Meta-Learning-Driven GFlowNets for 3D Directional Modulation in Mobile Wireless Systems
Zhihao Tao, Athina P. Petropulu
In our prior work we have proposed the use of GFlowNets, a generative AI (GenAI) framework, for designing a secure communication system comprising a time-modulated intelligent refl…
Beyond the Delay-Doppler Domain: A Time-Frequency Framework for Low-Overhead, Scalable OTFS Channel Estimation
Kailong Wang, Athina Petropulu
Most works on pilot-aided orthogonal time frequency space (OTFS) channel estimation operate in the delay-Doppler (DD) domain, where embedded-pilot guard regions must cover the unkn…
Sensing Security in Near-Field ISAC: Exploiting Scatterers for Eavesdropper Deception
Jiangong Chen, Xia Lei, Kaitao Meng +4
In this paper, we explore sensing security in near-field (NF) integrated sensing and communication (ISAC) scenarios by exploiting known scatterers in the sensing scene. We propose…
Wideband Integrated Sensing and Communications: Spectral Efficiency and Signaling Design
Henglin Pu, Zhu Han, Athina P. Petropulu +1
In integrated sensing and communications (ISAC), a distinguishing feature of 6G wireless networks, the main challenge lies in integrating the two distinct functions of sensing and…
Time-Modulated Intelligent Reflecting Surfaces for Integrated Sensing, Communication and Security: A Generative AI Design Framework
Zhihao Tao, Athina Petropulu, H. Vincent Poor
We propose a novel approach to achieve physical layer security for integrated sensing and communication (ISAC) systems operating in the presence of targets that may be eavesdropper…
Advancing the Control of Low-Altitude Wireless Networks: Architecture, Design Principles, and Future Directions
Haijia Jin, Weijie Yuan, Jun Wu +11
This article introduces a control-oriented low-altitude wireless network (LAWN) that integrates near-ground communications and remote estimation of the internal system state. This…
Secure Time-Modulated Intelligent Reflecting Surface via Generative Flow Networks
Zhihao Tao, Athina P. Petropulu
We propose a novel directional modulation (DM) design for OFDM transmitters aided by a time-modulated intelligent reflecting surface (TM-IRS). The TM-IRS is configured to preserve…
Antenna Selection for Enhancing Privacy in Radar-Based Vital Sign Monitoring Systems
Zhihao Tao, Athina P. Petropulu
Radar-based vital sign monitoring (VSM) systems have become valuable for non-contact health monitoring by detecting physiological activities, such as respiration and heartbeat, rem…
ISAC MIMO Systems with OTFS Waveforms and Virtual Arrays
Kailong Wang, Athina Petropulu
A novel Integrated Sensing-Communication (ISAC) system is proposed that can accommodate high mobility scenarios while making efficient use of bandwidth for both communication and s…
ISAC Super-Resolution Receivers: The Effect of Different Dictionary Matrices
Iman Valiulahi, Christos Masouros, Athina P. Petropulu
This paper presents an off-the-grid estimator for ISAC systems using lifted atomic norm minimization (LANM). The main challenge in the ISAC systems is the unknown nature of both tr…
ISAC Super-Resolution Receiver via Lifted Atomic Norm Minimization
Iman Valiulahi, Christos Masouros, Athina P. Petropulu
This paper introduces an off-the-grid estimator for integrated sensing and communication (ISAC) systems, utilizing lifted atomic norm minimization (LANM). The key challenge in this…
On the Security of Directional Modulation via Time Modulated Arrays Using OFDM Waveforms
Zhihao Tao, Athina Petropulu
Time-modulated arrays (TMAs) transmitting information bearing orthogonal frequency division multiplexing (OFDM) signals can achieve directional modulation. By turning its antennas…
Sensor Selection via GFlowNets: A Deep Generative Modeling Framework to Navigate Combinatorial Complexity
Spilios Evmorfos, Zhaoyi Xu, Athina Petropulu
The performance of sensor arrays in sensing and wireless communications improves with more elements, but this comes at the cost of increased energy consumption and hardware expense…
Optimized Waveform Design for OFDM-based ISAC Systems Under Limited Resource Occupancy
Silvia Mura, Dario Tagliaferri, Marouan Mizmizi +2
The sixth generation (6G) of wireless networks introduces integrated sensing and communication (ISAC), a technology in which communication and sensing functionalities are inextrica…
Cooperative ISAC Networks: Opportunities and Challenges
Kaitao Meng, Christos Masouros, Athina P. Petropulu +1
The integration of sensing and communication (ISAC) emerges as a cornerstone technology for the forth upcoming sixth generation era, seamlessly incorporating sensing functionality…
Uncrewed Vehicles in 6G Networks: A Unifying Treatment of Problems, Formulations, and Tools
Winston Hurst, Spilios Evmorfos, Athina Petropulu +1
Uncrewed Vehicles (UVs) functioning as autonomous agents are anticipated to play a crucial role in the 6th Generation of wireless networks. Their seamless integration, cost-effecti…
Cooperative ISAC Networks: Performance Analysis, Scaling Laws and Optimization
Kaitao Meng, Christos Masouros, Athina P. Petropulu +1
Integrated sensing and communication (ISAC) networks are investigated with the objective of effectively balancing the sensing and communication (S&C) performance at the network lev…
Waveform Design for OFDM-based ISAC Systems Under Resource Occupancy Constraint
Silvia Mura, Dario Tagliaferri, Marouan Mizmizi +2
Integrated Sensing and Communication (ISAC) is one of the key pillars envisioned for 6G wireless systems. ISAC systems combine communication and sensing functionalities over a sing…
Time-Modulated Intelligent Reflecting Surface for Waveform Security
Zhaoyi Xu, Athina Petropulu
We consider an OFDM transmitter aided by an intelligent reflecting surface (IRS) and propose a novel approach to enhance waveform security by employing time modulation (TM) at the…
Enhance Security of Time-Modulated Array-Enabled Directional Modulation by Introducing Symbol Ambiguity
Zhihao Tao, Zhaoyi Xu, Athina Petropulu
In this paper, if the time-modulated array (TMA)-enabled directional modulation (DM) communication system can be cracked is investigated and the answer is YES! We first demonstrate…
How secure is the time-modulated array-enabled ofdm directional modulation?
Zhihao Tao, Zhaoyi Xu, Athina Petropulu
Time-modulated arrays (TMA) transmitting orthogonal frequency division multiplexing (OFDM) waveforms achieve physical layer security by allowing the signal to reach the legitimate…
An IRS-Assisted Secure Dual-Function Radar-Communication System
Yi-Kai Li, Athina Petropulu
In dual-function radar-communication (DFRC) systems the probing signal contains information intended for the communication users, which makes that information vulnerable to eavesdr…