5 papers
Near-Field Localization with Dynamic Metasurface Antennas at THz: A CRB Minimizing Approach
Ioannis Gavras, George C. Alexandropoulos
The recent trend for extremely massive antenna arrays and high frequencies facilitates localization and sensing, offering increased angular and range resolution. In this letter, we…
Circuit-Compliant Optimization of Dynamic Metasurface Antennas for Near-Field Localization
Ioannis Gavras, George C. Alexandropoulos
This paper presents an optimization framework for near-field localization with Dynamic Metasurface Antenna (DMA) receivers. This metasurface technology offers enhanced angular and…
Simultaneous Communications and Sensing with Hybrid Reconfigurable Intelligent Surfaces
Ioannis Gavras, George C. Alexandropoulos
Hybrid Reconfigurable Intelligent Surfaces (HRISs) constitute a new paradigm of truly smart metasurfaces with the additional features of signal reception and processing, which have…
Joint Near-Field Target Tracking and Communications with Full Duplex Holographic MIMO
Ioannis Gavras, George C. Alexandropoulos
In this paper, we present a simultaneous target tracking and multi-user communications system realized by a full duplex holographic Multiple-Input Multiple-Output (MIMO) node equip…
Near-Field Localization with -bit Quantized Hybrid A/D Reception
Ioannis Gavras, Italo Atzeni, George C. Alexandropoulos
In this paper, we consider a hybrid Analog and Digital (A/D) receiver architecture with an extremely large Dynamic Metasurface Antenna (DMA) and an -bit resolution Analog-to-Dig…