992 citations · 5k across the 82 of their papers we have counts for
21 papers · 1 filter
Optimal Dual-Polarized Planar Arrays for Massive Capacity Over Point-to-Point MIMO Channels
Amna Irshad, Alva Kosasih, Emil Björnson +1
Future wireless networks must provide ever higher data rates. The available bandwidth increases roughly linearly as we increase the carrier frequency, but the range shrinks drastic…
Impact of Phase Noise on Uplink Cell-Free Massive MIMO OFDM
Yibo Wu, Luca Sanguinetti, Ulf Gustavsson +2
Cell-Free massive MIMO networks provide huge power gains and resolve inter-cell interference by coherent processing over a massive number of distributed instead of co-located anten…
Exploiting Array Geometry for Reduced-Subspace Channel Estimation in RIS-Aided Communications
Özlem Tuğfe Demir, Emil Björnson, Luca Sanguinetti
A reconfigurable intelligent surface (RIS) can be used to improve the channel gain between a base station (BS) and user equipment (UE), but only if its reflecting elements are…
Rate-Splitting assisted Massive Machine-Type Communications in Cell-Free Massive MIMO
Anup Mishra, Yijie Mao, Luca Sanguinetti +1
This letter focuses on integrating rate-splitting multiple-access (RSMA) with time-division-duplex Cell-free Massive MIMO (multiple-input multiple-output) for massive machine-type…
Cramér-Rao Bounds for Holographic Positioning
Antonio A. D'Amico, Andrea de Jesus Torres, Luca Sanguinetti +1
Multiple antennas arrays play a key role in wireless networks for communications but also for localization and sensing applications. The use of large antenna arrays at high carrier…
Nyquist-Sampling and Degrees of Freedom of Electromagnetic Fields
Andrea Pizzo, Andrea de Jesus Torres, Luca Sanguinetti +1
A signal space approach is presented to study the Nyquist sampling, number of degrees of freedom and reconstruction of an electromagnetic field under arbitrary scattering condition…
Wavenumber-Division Multiplexing in Line-of-Sight Holographic MIMO Communications
Luca Sanguinetti, Antonio A. D'Amico, Merouane Debbah
Starting from first principles of wave propagation, we consider a multiple-input multiple-output (MIMO) representation of a communication system between two spatially-continuous vo…
Electromagnetic Interference in RIS-Aided Communications
Andrea De Jesus Torres, Luca Sanguinetti, Emil Björnson
The prospects of using a reconfigurable intelligent surface (RIS) to aid wireless communication systems have recently received much attention. Among the different use cases, the mo…
Cramér-Rao Bounds for Near-Field Localization
Andrea De Jesus Torres, Antonio Alberto D'Amico, Luca Sanguinetti +1
Multiple antenna arrays play a key role in wireless networks for communications but also localization and sensing. The use of large antenna arrays pushes towards a propagation regi…
Reconfigurable Intelligent Surfaces: A Signal Processing Perspective With Wireless Applications
Emil Björnson, Henk Wymeersch, Bho Matthiesen +3
Antenna array technology enables directional transmission and reception of wireless signals, for communications, localization, and sensing purposes. The signal processing algorithm…
Near- and Far-Field Communications with Large Intelligent Surfaces
Andrea de Jesus Torres, Luca Sanguinetti, Emil Björnson
This paper studies the uplink spectral efficiency (SE) achieved by two single-antenna user equipments (UEs) communicating with a Large Intelligent Surface (LIS), defined as a plana…
Demystifying the Power Scaling Law of Intelligent Reflecting Surfaces and Metasurfaces
Emil Björnson, Luca Sanguinetti
Intelligent reflecting surfaces (IRSs) have recently attracted the attention of communication theorists as a means to control the wireless propagation channel. It has been shown th…
Massive MIMO Radar for Target Detection
Stefano Fortunati, Luca Sanguinetti, Fulvio Gini +2
Since the seminal paper by Marzetta from 2010, the Massive MIMO paradigm in communication systems has changed from being a theoretical scaled-up version of MIMO, with an infinite n…
Scaling up MIMO radar for target detection
Stefano Fortunati, Luca Sanguinetti, Maria Sabrina Greco +1
This work focuses on target detection in a colocated MIMO radar system. Instead of exploiting the classical temporal domain, we propose to explore the spatial dimension (i.e., numb…
Towards Massive MIMO 2.0: Understanding spatial correlation, interference suppression, and pilot contamination
Luca Sanguinetti, Emil Björnson, Jakob Hoydis
Since the seminal paper by Marzetta from 2010, Massive MIMO has changed from being a theoretical concept with an infinite number of antennas to a practical technology. The key conc…
Massive MIMO is a Reality -- What is Next? Five Promising Research Directions for Antenna Arrays
Emil Björnson, Luca Sanguinetti, Henk Wymeersch +2
Massive MIMO (multiple-input multiple-output) is no longer a "wild" or "promising" concept for future cellular networks - in 2018 it became a reality. Base stations (BSs) with 64 f…
Deep Learning Power Allocation in Massive MIMO
Luca Sanguinetti, Alessio Zappone, Merouane Debbah
This work advocates the use of deep learning to perform max-min and max-prod power allocation in the downlink of Massive MIMO networks. More precisely, a deep neural network is tra…
Decentralizing Multicell Beamforming via Deterministic Equivalents
Hossein Asgharimoghaddam, Antti Tölli, Luca Sanguinetti +1
This paper focuses on developing a decentralized framework for coordinated minimum power beamforming wherein base stations (BSs), each equipped with antennas, serve sin…
Energy-Delay Efficient Power Control in Wireless Networks
Alessio Zappone, Luca Sanguinetti, Merouane Debbah
This work aims at developing a power control framework to jointly optimize energy efficiency (measured in bit/Joule) and delay in wireless networks. A multi-objective approach is t…
Random Access in Massive MIMO by Exploiting Timing Offsets and Excess Antennas
Luca Sanguinetti, Antonio A. D'Amico, Michele Morelli +1
Massive MIMO systems, where base stations are equipped with hundreds of antennas, are an attractive way to handle the rapid growth of data traffic. As the number of user equipments…
Spectral and Energy Efficiency of Superimposed Pilots in Uplink Massive MIMO
Daniel Verenzuela, Emil Björnson, Luca Sanguinetti
Next generation wireless networks aim at providing substantial improvements in spectral efficiency (SE) and energy efficiency (EE). Massive MIMO has been proved to be a viable tech…