no code implementations • 4 Feb 2025 • Kailong Wang, Athina Petropulu
For maximum communication rate, all DD-domain bins are used as shared, but in this case, the target resolution is limited by the aperture of the receive array.
no code implementations • 14 Nov 2024 • Kailong Wang, Athina Petropulu
The transmit antennas can use the Doppler-delay (DD) domain bins in a shared fashion.
no code implementations • 20 Aug 2024 • Zhihao Tao, Athina Petropulu
First, we propose a novel, low-complexity scheme via which the eavesdropper could defy the scrambling in the received signal and recover the transmitted symbols.
no code implementations • 29 Jul 2024 • Spilios Evmorfos, Zhaoyi Xu, Athina Petropulu
Applied to a standard sensor selection scenario, the developed approach outperforms popular methods which are based on convex optimization and greedy algorithms.
no code implementations • 27 Jun 2024 • Silvia Mura, Dario Tagliaferri, Marouan Mizmizi, Umberto Spagnolini, Athina Petropulu
This paper delves into OFDM waveform design through optimal resource allocation over time, frequency, and energy, maximizing sensing performance while preserving communication quality.
no code implementations • 23 Apr 2024 • Winston Hurst, Spilios Evmorfos, Athina Petropulu, Yasamin Mostofi
Uncrewed Vehicles (UVs) functioning as autonomous agents are anticipated to play a crucial role in the 6th Generation of wireless networks.
no code implementations • 6 Apr 2024 • Yi-Kai Li, Athina Petropulu
A closed-form based approach is proposed for the IRS design problem, which results in low complexity IRS design.
no code implementations • 19 Dec 2023 • Silvia Mura, Dario Tagliaferri, Marouan Mizmizi, Umberto Spagnolini, Athina Petropulu
In particular, waveform design for legacy Orthogonal Frequency Division Multiplexing (OFDM) systems consists of a suitable time-frequency resource allocation policy balancing between communication and sensing performance.
no code implementations • 20 Oct 2023 • 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 IRS side.
no code implementations • 15 Oct 2023 • 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!
no code implementations • 12 Oct 2023 • 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 destination undistorted, while making the signal appear scrambled in all other directions.
no code implementations • 1 Oct 2023 • Yi-Kai Li, Athina Petropulu
The radar waveform, the AN jamming noise and the IRS parameters are designed to optimize the communication secrecy rate while meeting radar signal-to-noise ratio (SNR) constrains.
no code implementations • 26 Sep 2023 • Silvia Mura, Marouan Mizmizi, Umberto Spagnolini, Athina Petropulu
This paper tackles the challenge of wideband MIMO channel estimation within indoor millimeter-wave scenarios.
no code implementations • 10 May 2023 • Yi-Kai Li, Athina Petropulu
This short tutorial presents several ideas for designing dual function radar communication (DFRC) systems aided by intelligent reflecting surfaces (IRS).
no code implementations • 22 Feb 2023 • Yi-Kai Li, Athina Petropulu
A low-complexity design is proposed for an integrated sensing and communication (ISAC) system aided by an intelligent reflecting surface (IRS).
no code implementations • 5 Feb 2023 • Zhaoyi Xu, Athina Petropulu
We propose a novel, low-complexity target estimation method that estimates the target parameters based on the scrambled received symbols.
no code implementations • 10 Apr 2022 • Yikai Li, Athina Petropulu
We propose a novel design of a dual-function radar communication (DFRC) system aided by an Intelligent Reflecting Surface (IRS).
no code implementations • 15 Oct 2021 • Zhaoyi Xu, Cong Shi, Tianfang Zhang, ShuPing Li, Yichao Yuan, Chung-Tse Michael Wu, Yingying Chen, Athina Petropulu
Based on the designed TDM phased-MIMO radar, we develop a system to automatically localize multiple human subjects and estimate their vital signs.
no code implementations • 10 Jun 2021 • Zhaoyi Xu, Athina Petropulu
We show that when some of the subcarriers are reserved for exclusive use by one transmit antenna each (private subcarriers), the communication rate can be traded off for improved sensing performance.
no code implementations • 12 May 2021 • Nikolaos Nomikos, Spyros Zoupanos, Themistoklis Charalambous, Ioannis Krikidis, Athina Petropulu
Mobile networks are experiencing tremendous increase in data volume and user density.
1 code implementation • 25 Feb 2021 • J. Andrew Zhang, Fan Liu, Christos Masouros, Robert W. Heath Jr., Zhiyong Feng, Le Zheng, Athina Petropulu
Joint communication and radar sensing (JCR) represents an emerging research field aiming to integrate the above two functionalities into a single system, sharing a majority of hardware and signal processing modules and, in a typical case, sharing a single transmitted signal.
no code implementations • 9 Feb 2021 • Konstantinos Diamantaras, Zhaoyi Xu, Athina Petropulu
MIMO transmit arrays allow for flexible design of the transmit beampattern.
no code implementations • 18 Jan 2021 • Zhaoyi Xu, Fan Liu, Konstantinos Diamantaras, Christos Masouros, Athina Petropulu
In this paper, we propose an energy-efficient radar beampattern design framework for a Millimeter Wave (mmWave) massive multi-input multi-output (mMIMO) system, equipped with a hybrid analog-digital (HAD) beamforming structure.
no code implementations • 7 Jul 2020 • Zhaoyi Xu, Athina Petropulu, Shunqiao Sun
The private subcarriers are used to synthesize a virtual array for high angular resolution, and also for improved estimation on the active antenna indices.
no code implementations • 17 Jun 2020 • Ehsan Tohidi, Alireza Hariri, Hamid Behroozi, Mohammad Mahdi Nayebi, Geert Leus, Athina Petropulu
CSP MIMO radar involves two levels of data compression followed by target detection at the compressed domain.