158 citations · 457 across the 40 of their papers we have counts for
24 papers · 1 filter
Beam Focusing for Near-Field Multi-User Localization
Qianyu Yang, Anna Guerra, Francesco Guidi +5
Extremely large-scale antenna arrays are poised to play a pivotal role in sixth-generation (6G) networks. Utilizing such arrays often results in a near-field spherical wave transmi…
A Deep-NN Beamforming Approach for Dual Function Radar-Communication THz UAV
Gianluca Fontanesi, Anna Guerra, Francesco Guidi +7
In this paper, we consider a scenario with one UAV equipped with a ULA, which sends combined information and sensing signals to communicate with multiple GBS and, at the same time,…
Holographic Imaging with XL-MIMO and RIS: Illumination and Reflection Design
Giulia Torcolacci, Anna Guerra, Haiyang Zhang +4
This paper addresses a near-field imaging problem utilizing extremely large-scale multiple-input multiple-output (XL-MIMO) antennas and reconfigurable intelligent surfaces (RISs) a…
NLOS Localization Exploiting Frequency-selective Metasurfaces
Marina Lotti, Giacomo Calesini, Davide Dardari
This paper introduces a new approach to localize user devices located in non-line-of-sight (NLOS) areas using a passive, non-reconfigurable, and frequency-selective metasurface cal…
Holographic MIMO Communications exploiting the Orbital Angular Momentum
Giulia Torcolacci, Nicolò Decarli, Davide Dardari
This study delves into the potential of harnessing the orbital angular momentum (OAM) property of electromagnetic waves in near-field and line-of-sight scenarios by utilizing large…
Reconfigurable Electromagnetic Environments: A General Framework
Davide Dardari
The recent introduction of the smart radio environments (SREs) paradigm, enabled by reconfigurable intelligent surfaces (RISs), has put in evidence the need for physically-consiste…
Grant-free Random Access with Self-conjugating Metasurfaces
Davide Dardari, Marina Lotti, Nicolò Decarli +1
Recently, grant-free random access schemes have received significant attention in the scientific community as a solution for extremely low-latency massive communications in new ind…
Radio SLAM for 6G Systems at THz Frequencies: Design and Experimental Validation
Marina Lotti, Gianni Pasolini, Anna Guerra +3
Next-generation wireless networks will see the convergence of communication and sensing, also exploiting the availability of large bandwidths in the Terahertz (THz) spectrum and el…
Near-field Localization with Dynamic Metasurface Antennas
Qianyu Yang, Anna Guerra, Francesco Guidi +5
Sixth generation (6G) cellular communications are expected to support enhanced wireless localization capabilities. The widespread deployment of large arrays and high-frequency band…
Two-Timescale Transmission Design and RIS Optimization for Integrated Localization and Communications
Fan Jiang, Andrea Abrardo, Kamran Keykhoshravi +3
Reconfigurable intelligent surfaces (RISs) have tremendous potential to boost communication performance, especially when the line-of-sight (LOS) path between the user equipment (UE…
6G Wireless Communications: From Far-field Beam Steering to Near-field Beam Focusing
Haiyang Zhang, Nir Shlezinger, Francesco Guidi +2
6G networks will be required to support higher data rates, improved energy efficiency, lower latency, and more diverse users compared with 5G systems. To meet these requirements, e…
Near-Field Wireless Power Transfer with Dynamic Metasurface Antennas
Haiyang Zhang, Nir Shlezinger, Francesco Guidi +3
Radio frequency wireless power transfer (WPT) enables charging low-power mobile devices without relying on wired infrastructure. Current existing WPT systems are typically designed…
Near-field Wireless Power Transfer for 6G Internet-of-Everything Mobile Networks: Opportunities and Challenges
Haiyang Zhang, Nir Shlezinger, Francesco Guidi +3
Radiating wireless power transfer (WPT) brings forth the possibility to cost-efficiently charge wireless devices without requiring a wiring infrastructure. As such, it is expected…
Communication Modes with Large Intelligent Surfaces in the Near Field
Nicolò Decarli, Davide Dardari
This paper proposes a practical method for the definition of communication modes when antennas operate in the near-field region, by realizing ad-hoc beams exploiting the focusing c…
Beam Focusing for Near-Field Multi-User MIMO Communications
Haiyang Zhang, Nir Shlezinger, Francesco Guidi +3
Large antenna arrays and high-frequency bands are two key features of future wireless communication systems. The combination of large-scale antennas with high transmission frequenc…
Holographic Communication using Intelligent Surfaces
Davide Dardari, Nicoló Decarli
Holographic communication is intended as an holistic way to manipulate with unprecedented flexibility the electromagnetic field generated or sensed by an antenna. This is of partic…
Beamwidth Optimization and Resource Partitioning Scheme for Localization Assisted mm-wave Communications
Gourab Ghatak, Remun Koirala, Antonio De Domenico +4
We study a mm-wave wireless network deployed along the roads of an urban area, to support localization and communication services simultaneously for outdoor mobile users. In this n…
Using MetaPrisms for Performance Improvement in Wireless Communications
Davide Dardari, Devis Massari
In this paper, we put forth the idea of metaprism, a passive and non-reconfigurable metasurface acting as a metamirror with frequency-dependent reflecting properties within the sig…
An Ultra-wideband Battery-less Positioning System for Space Applications
Davide Dardari, Nicolò Decarli, Davide Fabbri +10
An ultra-wide bandwidth (UWB) remote-powered positioning system for potential use in tracking floating objects inside space stations is presented. It makes use of battery-less tags…
Radio Positioning with EM Processing of the Spherical Wavefront
Francesco Guidi, Davide Dardari
Next 5G and beyond applications have brought a tremendous interest towards array systems employing an extremely large number of antennas, so that the technology that might be in pl…
Dynamic Radar Networks of UAVs
Anna Guerra, Davide Dardari, Petar M. Djuric
In the incoming years, the low-aerial space will be crowded by unmanned aerial vehicles (UAVs), which will be providing different services. In this expected context, an emerging pr…
Automatic Mapping of the Indoor World with Personal Radars
Anna Guerra, Francesco Guidi, Gianni Pasolini +3
Digital maps will revolutionize our experience of perceiving and navigating indoor environments. While today we rely only on the representation of the outdoors, the mapping of indo…
Joint Indoor Localization and Navigation of UAVs for Network Formation Control
Anna Guerra, Davide Dardari, Petar M. Djuric
In this paper, we propose a joint indoor localization and navigation algorithm to enable a swarm of unmanned aerial vehicles (UAVs) to deploy in a specific spatial formation in ind…
Non-Centralized Navigation for Source Localization by Cooperative UAVs
Anna Guerra, Davide Dardari, Petar M. Djuric
In this paper, we propose a distributed solution to the navigation of a population of unmanned aerial vehicles (UAVs) to best localize a static source. The network is considered he…