10 citations · 12 across the 11 of their papers we have counts for
12 papers
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…
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…
A Secure Dual-Function Radar Communication System via Time-Modulated Arrays
Zhaoyi Xu, Athina Petropulu
Dual-function radar-communication (DFRC) systems offer high spectral, hardware and power efficiency, as such are prime candidates for 6G wireless systems. DFRC systems use the same…
DFRC with Improved Communication-Sensing Trade-off via Private Subcarrier Permutations and Pairing with Antennas
Zhaoyi Xu, Athina P. Petropulu
Dual function radar communication (DFRC) systems can achieve significant improvements in spectrum efficiency, system complexity and energy efficiency, and are attracting a lot of a…
Phased Array With Improved Beamforming Capability via Use of Double Phase Shifters
Zhaoyi Xu, Athina P. Petropulu
The passive electronically scanned array (PESA) is widely used due to its simple structure and low cost. {Its antenna weights have unit modulus and thus, only the weights phases ca…
Simultaneous Monitoring of Multiple People's Vital Sign Leveraging a Single Phased-MIMO Radar
Zhaoyi Xu, Cong Shi, Tianfang Zhang +5
Vital sign monitoring plays a critical role in tracking the physiological state of people and enabling various health-related applications (e.g., recommending a change of lifestyle…
A Dual-Function Radar Communication System With OFDM Waveforms and Subcarrier Sharing
Zhaoyi Xu, Athina Petropulu
A novel monostatic multiple-input multiple-output (MIMO) dual-function radar communication (DFRC) system is proposed, that uses the available bandwidth efficiently for both sensing…
Sparse Antenna Array Design for MIMO Radar Using Softmax Selection
Konstantinos Diamantaras, Zhaoyi Xu, Athina Petropulu
MIMO transmit arrays allow for flexible design of the transmit beampattern. However, the large number of elements required to achieve certain performance using uniform linear array…
Learning to Select for MIMO Radar based on Hybrid Analog-Digital Beamforming
Zhaoyi Xu, Fan Liu, Konstantinos Diamantaras +2
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 hyb…
A Joint Design of MIMO-OFDM Dual-Function Radar Communication System Using Generalized Spatial Modulation
Zhaoyi Xu, Athina Petropulu, Shunqiao Sun
A novel dual-function radar communication (DFRC) system is proposed, that achieves high target resolution and high communication rate. It consists of a multiple-input multiple-outp…