16 citations · 28 across the 18 of their papers we have counts for
19 papers
Modeling and Performance Evaluation of Distributed Satellite Antennas: Space Is Much Closer Than One Might Think
Giacomo Bacci, Riccardo De Gaudenzi, Marco Luise +1
Distributed satellites can deliver broadband connectivity directly to commercial handsets. In the formation of arrays (FoA) architecture, cooperating satellites synthesize a large…
On the Unilateral Approximation Condition with Linear Arrays in Near-Field NLoS Propagation
Aniol Martí, Luca Sanguinetti, Xavier Gràcia
This paper investigates the validity of the unilateral approximation in near-field non-line-of-sight (NLoS) propagation for large-scale linear antenna arrays. Utilizing multiport c…
A Novel Near-Field Dictionary Design for Hybrid MIMO with Uniform Planar Arrays
Luca Antonelli, Antonio Alberto D Amico, Luca Sanguinetti
Near-field ultra-massive MIMO (U-MIMO) systems provide enhanced spatial resolution but present challenges for channel estimation, particularly when hybrid architectures are employe…
Near-Field MMSE Channel Estimation for THz RIS-aided Communications with Electromagnetic Interference
Wen-Xuan Long, Marco Moretti, Giacomo Bacci +1
This letter investigates the channel estimation problem in THz wireless communications where a RIS is employed to assist wireless transmission between different devices. Unlike exi…
Goal-Oriented Access Optimization for ISAC-Enabled Digital Twins
Fabio Saggese, Federico Chiariotti, Shashi Raj Pandey +3
Digital twins (DTs) of physical systems enable real-time remote tracking, control, and learning, but require to be updated with environmental sensory data to maintain alignment wit…
An Enhanced Polar-Domain Dictionary Design for Elevated BSs in Near-Field U-MIMO
Luca Antonelli, Antonio Alberto D'Amico, Luca Sanguinetti
Near-field U-MIMO communications require carefully optimized sampling grids in both angular and distance domains. However, most existing grid design methods neglect the influence o…
Tree Meets Transformer: A Hybrid Architecture for Scalable Power Allocation in Cell-Free Networks
Irched Chafaa, Giacomo Bacci, Luca Sanguinetti
Power allocation remains a fundamental challenge in wireless communication networks, particularly under dynamic user loads and large-scale deployments. While Transformerbased model…
Linear Attention for Joint Power Optimization and User-Centric Clustering in Cell-Free Networks
Irched Chafaa, Giacomo Bacci, Luca Sanguinetti
Optimal AP clustering and power allocation are critical in user-centric cell-free massive MIMO systems. Existing deep learning models lack flexibility to handle dynamic network con…
Channel Estimation for 6G Near-Field Wireless Communications: A Comprehensive Survey
Wen-Xuan Long, Shengyu Ye, Marco Moretti +4
The sixth-generation (6G) wireless systems are expected to adopt extremely large aperture arrays (ELAAs), novel antenna architectures, and operate in extremely high-frequency bands…
Coherent and Noncoherent Detection in Dense Arrays: Can We Ignore Mutual Coupling?
Aniol Martí, Luca Sanguinetti, Jaume Riba +1
This paper investigates the impact of mutual coupling on MIMO systems with densely deployed antennas. Leveraging multiport communication theory, we analyze both coherent and noncoh…
Parametric Near-Field MMSE Channel Estimation for sub-THz XL-MIMO Systems
Wen-Xuan Long, Marco Moretti, Michele Morelli +2
Accurate channel estimation is essential for reliable communication in sub-THz extremely large (XL) MIMO systems. Deploying XL-MIMO in high-frequency bands not only increases the n…
Transformer-Based Power Optimization for Max-Min Fairness in Cell-Free Massive MIMO
Irched Chafaa, Giacomo Bacci, Luca Sanguinetti
Power allocation is an important task in wireless communication networks. Classical optimization algorithms and deep learning methods, while effective in small and static scenarios…
Harnessing Wavefront Curvature and Spatial Correlation in Noncoherent MIMO Communications
Aniol Martí, Luca Sanguinetti, Meritxell Lamarca +1
Noncoherent communication systems have regained interest due to the growing demand for high-mobility and low-latency applications. Most existing studies using large antenna arrays…
Efficient Channel Estimation With Shorter Pilots in RIS-Aided Communications: Using Array Geometries and Interference Statistics
Özlem Tuğfe Demir, Emil Björnson, Luca Sanguinetti
Accurate estimation of the cascaded channel from a user equipment (UE) to a base station (BS) via each reconfigurable intelligent surface (RIS) element is critical to realizing the…
Uplink Cell-Free Massive MIMO OFDM with Phase Noise-Aware Channel Estimation: Separate and Shared Local Oscillators
Yibo Wu, Luca Sanguinetti, Musa Furkan Keskin +3
Cell-free massive multiple-input multiple-output (mMIMO) networks enhance coverage and spectral efficiency (SE) by distributing antennas across access points (APs) with phase coher…
Optimizing RIS Impairments through Semantic Communication
Nour Hello, Mattia Merluzzi, Emilio Calvanese Strinati +1
This paper investigates how semantic communication can effectively influence and potentially redefine the limitations imposed by physical layer settings. Reconfigurable Intelligent…
MMSE Channel Estimation in Large-Scale MIMO: Improved Robustness with Reduced Complexity
Giacomo Bacci, Antonio Alberto D'Amico, Luca Sanguinetti
Large-scale MIMO systems with a massive number N of individually controlled antennas pose significant challenges for minimum mean square error (MMSE) channel estimation, based on u…
MMSE Design of RIS-aided Communications
Wen-Xuan Long, Marco Moretti, Andrea Abrardo +2
Consider a communication system in which a single antenna user equipment exchanges information with a multi-antenna base station via a reconfigurable intelligent surface (RIS) in t…
A Robust Ranging Scheme for OFDMA-Based Networks
Michele Morelli, Luca Sanguinetti, H. Vincent Poor
Uplink synchronization in orthogonal frequency-division multiple-access (OFDMA) systems is a challenging task. In IEEE 802.16-based networks, users that intend to establish a commu…