1.7k citations · 3.7k across the 150 of their papers we have counts for
155 papers
Energy Efficiency in Microwave Linear Analog Computer (MiLAC)-Enabled Communications
Ahmed Magbool, Marco Di Renzo
Microwave linear analog computers (MiLACs) have emerged as a promising architecture for energy-efficient wireless communications by shifting signal processing from the digital to t…
Efficient Alternating Optimization for Hybrid Digital-Wave Beamforming in SIM-Assisted Cell-Free Massive MIMO
Eunhyuk Park, Seok-Hwan Park, Osvaldo Simeone +1
Stacked intelligent metasurfaces (SIMs) have recently emerged as a promising architecture for large-scale beamforming systems, including cell-free massive MIMO (CF-mMIMO), due to t…
Performance Analysis and Joint Beamforming for Hybrid RIS-Aided Massive MIMO ISAC
Smriti Uniyal, Tianyu Fang, Marco Di Renzo +2
In integrated sensing and communication (ISAC) systems, stringent sensing performance constraints can severely limit the power available for communication. Hybrid reconfigurable in…
A Stochastic Optimization Framework for RIS-Aided Wireless Network Design
Davide Gagliardi, Alessio Zappone, Domenico Ciuonzo +1
Reconfigurable intelligent surfaces (RISs) are a promising technology for improving the spectral and energy efficiency of future wireless networks, which make use of metasurfaces.…
Energy Efficiency Maximization for Hybrid RIS-Aided Communications via Deep Unfolding
Pouya Mobaraki, Abolfazl Zakeri, Marco Di Renzo +2
We address energy-efficiency (EE) maximization in a multiuser (MU) multiple-input single-output (MISO) downlink system assisted by a hybrid reconfigurable intelligent surface(RIS),…
RIS-Assisted Proactive Handover for Reliable mmWave Wireless Networks
Alaa Adnan, Mohammad Al-Quraan, Ahmed Zoha +5
Millimeter-wave (mmWave) networks are highly susceptible to line-of-sight (LoS) blockages. Vision-aided wireless communications (VAWC) enable proactive handovers (PHO) to mitigate…
Sparse Channel Estimation for SIM-based mmWave Near-Field Communications
Jiancheng An, Enyu Shi, Jiayi Zhang +4
In this paper, we address the channel estimation (CE) problem in SIM-based multi-user (MU) millimeter-wave (mmWave) near-field communication systems. To address the severe path los…
From Multi-Port Models to Cascade Structures: Optimization of Active Unilateral Stacked Intelligent Metasurfaces
Andrea Abrardo, Giulio Bartoli, Marco Di Renzo +1
This paper develops a multi-port S-parameter framework for the analysis and optimization of stacked intelligent metasurfaces (SIMs) with unilateral active interconnections. By mode…
Stacked Intelligent Metasurface-Aided Wave-Domain Signal Processing: From Communications to Sensing and Computing
Jiancheng An, Chau Yuen, Marco Di Renzo +3
Artificial neural networks possess remarkable capabilities for abstract feature extraction, while electromagnetic computing leverages wave propagation to execute complex mathematic…
A Refined Alternating Optimization for Sum Rate Maximization in SIM-Aided Multiuser MISO Systems
Eduard E. Bahingayi, Shuying Lin, Murat Uysal +2
Stacked intelligent metasurfaces (SIMs) have emerged as a disruptive technology for future wireless networks. To investigate their capabilities, we study the sum rate maximization…
Generative AI-Empowered Secure Communications in Space-Air-Ground Integrated Networks: A Survey and Tutorial
Chenbo Hu, Ruichen Zhang, Bo Li +6
Space-air-ground integrated networks (SAGINs) face unprecedented security challenges due to their inherent characteristics, such as multidimensional heterogeneity and dynamic topol…
Airy beams for radiative near-field communications: Fundamentals, potentials, and limitations
Donatella Darsena, Francesco Verde, Marco Di Renzo +1
In next-generation wireless networks, the combination of electrically large radiating apertures and high-frequency transmission extends the radiating near-field region around the t…
Curved Apertures for Customized Wave Trajectories: Beyond Flat Aperture Limitations
Joan Martínez Canals, Francesco Devoti, Vincenzo Sciancalepore +2
Beam shaping techniques enable tailored beam trajectories, offering unprecedented connectivity opportunities in wireless communications. Current approaches rely on flat apertures,…
Multi-beam Beamforming in RIS-aided MIMO Subject to Reradiation Mask Constraints -- Optimization and Machine Learning Design
Shumin Wang, Hajar El Hassani, Marco Di Renzo +1
Reconfigurable intelligent surfaces (RISs) are an emerging technology for improving spectral efficiency and reducing power consumption in future wireless systems. This paper invest…
Secrecy Energy Efficiency Maximization in RIS-Aided Networks: Active or Nearly-Passive RIS?
Robert Kuku Fotock, Agbotiname Lucky Imoize, Alessio Zappone +2
This work addresses the problem of secrecy energy efficiency (SEE) maximization in RIS-aided wireless networks. The use of active and nearly-passive RISs are compared and their tra…
A Flexible Design Framework for Integrated Communication and Computing Receivers
Kuranage Roche Rayan Ranasinghe, Kengo Ando, Hyeon Seok Rou +4
We propose a framework to design integrated communication and computing (ICC) receivers capable of simultaneously detecting data symbols and performing over-the-air computing (AirC…
SIM-Enabled Hybrid Digital-Wave Beamforming for Fronthaul-Constrained Cell-Free Massive MIMO Systems
Eunhyuk Park, Seok-Hwan Park, Osvaldo Simeone +2
As the dense deployment of access points (APs) in cell-free massive multiple-input multiple-output (CF-mMIMO) systems presents significant challenges, per-AP coverage can be expand…
Channel-Aware Holographic Decision Fusion
Domenico Ciuonzo, Alessio Zappone, Marco Di Renzo
This work investigates Distributed Detection (DD) in Wireless Sensor Networks (WSNs) utilizing channel-aware binary-decision fusion over a shared flat-fading channel. A reconfigura…
Energy-Efficient SIM-assisted Communications: How Many Layers Do We Need?
Enyu Shi, Jiayi Zhang, Jiancheng An +3
The stacked intelligent metasurface (SIM), comprising multiple layers of reconfigurable transmissive metasurfaces, is becoming an increasingly viable solution for future wireless c…
RiLoCo: An ISAC-oriented AI Solution to Build RIS-empowered Networks
Guillermo Encinas-Lago, Vincenzo Sciancalepore, Henk Wymeersch +2
The advance towards 6G networks comes with the promise of unprecedented performance in sensing and communication capabilities. The feat of achieving those, while satisfying the eve…
Beamforming and Waveform Optimization for RF Wireless Power Transfer with Beyond Diagonal Reconfigurable Intelligent Surfaces
Amirhossein Azarbahram, Onel L. A. Lopez, Bruno Clerckx +2
Radio frequency (RF) wireless power transfer (WPT) is a promising technology to seamlessly charge low-power devices, but its low end-to-end power transfer efficiency remains a crit…
Metaprism Design for Wireless Communications: Angle-Frequency Analysis, Physical Realizability Constraints, and Performance Optimization
Silvia Palmucci, Andrea Abrardo, Davide Dardari +2
Recent advancements in smart radio environment technologies aim to enhance wireless network performance through the use of low-cost electromagnetic (EM) devices. Among these, recon…
Power Minimization with Rate Constraints for Multi-User MIMO Systems with Large-Size RISs
Silvia Palmucci, Giulio Bartoli, Andrea Abrardo +2
This study focuses on the optimization of a single-cell multi-user multiple-input multiple-output (MIMO) system with multiple large-size reconfigurable intelligent surfaces (RISs).…
Degrees of Freedom of Holographic MIMO in Multi-user Near-field Channels
Houfeng Chen, Shaohua Yue, Marco Di Renzo +1
Holographic multiple-input multiple-output (HMIMO) is an emerging technology for 6G communications, in which numerous antenna units are integrated in a limited space. As the HMIMO…