101 citations · 376 across the 32 of their papers we have counts for
36 papers
Scalable Integrated Sensing and Communications for Multi-Target Detection and Tracking in Cell-Free Massive MIMO: A Unified Framework
Sergi Liesegang, Stefano Buzzi, Carmen D'Andrea
This paper investigates a cell-free massive MIMO (multiple-input multiple-output) system where distributed access points (APs) perform integrated sensing and communications (ISAC)…
Co-existing/Cooperating Multicell Massive MIMO and Cell-Free Massive MIMO Deployments: Heuristic Designs and Performance Analysis
Stefano Buzzi, Carmen D'Andrea, Li Wang +2
Cell-free massive MIMO (CF-mMIMO) systems represent a deeply investigated evolution from the conventional multicell co-located massive MIMO (MC-mMIMO) network deployments. Anticipa…
Scalability and Implementation Aspects of Cell-Free Massive MIMO for ISAC
Stefano Buzzi, Carmen D'Andrea, Sergi Liesegang
This paper addresses the problem of scalability for a cell-free massive MIMO (CF-mMIMO) system that performs integrated sensing and communications (ISAC). Specifically, the case wh…
Transmitter Side Beyond-Diagonal Reconfigurable Intelligent Surface for Massive MIMO Networks
Anup Mishra, Yijie Mao, Carmen D'Andrea +2
This letter focuses on a transmitter or base station (BS) side beyond-diagonal reflecting intelligent surface (BD-RIS) deployment strategy to enhance the spectral efficiency (SE) o…
Doppler-Resilient Universal Filtered MultiCarrier (DR-UFMC): A Beyond-OTFS Modulation
Carmen D'Andrea, Stefano Buzzi, Maria Fresia +1
In the past few years, some alternatives to the Orthogonal Frequency Division Multiplexing (OFDM) modulation have been considered to improve its spectral containment and its perfor…
On the Coexistence of eMBB and URLLC in Multi-cell Massive MIMO
Giovanni Interdonato, Stefano Buzzi, Carmen D'Andrea +3
The non-orthogonal coexistence between the enhanced mobile broadband (eMBB) and the ultra-reliable low-latency communication (URLLC) in the downlink of a multi-cell massive MIMO sy…
Multi-UE Multi-AP Beam Alignment in User-Centric Cell-Free Massive MIMO Systems Operating at mmWave
Stefano Buzzi, Carmen D'Andrea, Maria Fresia +1
This paper considers the problem of beam alignment in a cell-free massive MIMO deployment with multiple access points (APs) and multiple user equipments (UEs) simultaneously operat…
Approaching Massive MIMO Performance with Reconfigurable Intelligent Surfaces: We Do Not Need Many Antennas
Giovanni Interdonato, Francesca Di Murro, Carmen D'Andrea +2
This paper considers an antenna structure where a (non-large) array of radiating elements is placed at short distance in front of a reconfigurable intelligent surface (RIS), herein…
RIS-aided Massive MIMO: Achieving Large Multiplexing Gains with non-Large Arrays
Stefano Buzzi, Carmen D'Andrea, Giovanni Interdonato
This paper considers an antenna structure where a (non-large) array of radiating elements is placed at short distance in front of a reconfigurable intelligent surface (RIS). We pro…
Beam Alignment in mmWave User-Centric Cell-Free Massive MIMO Systems
Stefano Buzzi, Carmen D'Andrea, Maria Fresia +1
The problem of beam alignment (BA) in a cell-free massive multiple-input multiple-output (CF-mMIMO) system operating at millimeter wave (mmWaves) carrier frequencies is considered…
User-centric Handover in mmWave Cell-Free Massive MIMO with User Mobility
Carmen D'Andrea, Giovanni Interdonato, Stefano Buzzi
The coupling between cell-free massive multiple-input multiple-output (MIMO) systems operating at millimeter-wave (mmWave) carrier frequencies and user mobility is considered in th…
Improving Cell-Free Massive MIMO by Local Per-Bit Soft Detection
Carmen D'Andrea, Erik G. Larsson
In this letter, we consider the uplink of a cell-free Massive multiple-input multiple-output (MIMO) network where each user is decoded by a subset of access points (APs). An additi…
RIS Configuration, Beamformer Design, and Power Control in Single-Cell and Multi-Cell Wireless Networks
Stefano Buzzi, Carmen D'Andrea, Alessio Zappone +3
Reconfigurable Intelligent Surfaces (RISs) are recently attracting a wide interest due to their capability of tuning wireless propagation environments in order to increase the syst…
User Association in Scalable Cell-Free Massive MIMO Systems
Carmen D'Andrea, Erik G. Larsson
In this work, we consider the uplink of a scalable cell-free massive MIMO system where the users are served only by a subset of access points (APs) in the network. The APs are phys…
The Ultimate Weapon for Ultra-Broadband 6G: Digital Beamforming and Doubly Massive mmWave MIMO
Bengt Lindoff, Carmen D'Andrea, Stefano Buzzi +2
The use of millimeter waves for wireless communications is one of the main technological innovations of 5G systems with respect to previous generations of cellular systems. Their c…
Scoring the Terabit/s Goal:Broadband Connectivity in 6G
Nandana Rajatheva, Italo Atzeni, Simon Bicais +26
This paper explores the road to vastly improving the broadband connectivity in future 6G wireless systems. Different categories of use cases are considered, with peak data rates up…
Resource Allocation in Wireless Networks Assisted by Reconfigurable Intelligent Surfaces
Stefano Buzzi, Carmen D'Andrea, Alessio Zappone +3
Reconfigurable Intelligent Surfaces (RISs) are recently attracting a wide interest due to their capability of tuning wireless propagation environments in order to increase the syst…
Pilot Assignment in Cell-Free Massive MIMO based on the Hungarian Algorithm
Stefano Buzzi, Carmen D'Andrea, Maria Fresia +2
This letter focuses on the problem of pilot assignment in cell-free massive MIMO systems. Exploiting the well-known Hungarian algorithms, two procedures are proposed, one maximizin…
Transmit Power Allocation for Joint Communication and Sensing through Massive MIMO Arrays
Stefano Buzzi, Carmen D'Andrea, Marco Lops
The paper considers a scenario where a base station (BS), equipped with a large-scale antenna array, execute, using the same frequency range, both communication with mobile users a…
Using Massive MIMO Arrays for Joint Communication and Sensing
Stefano Buzzi, Carmen D'Andrea, Marco Lops
One of the trends that is gaining more and more importance in the field of beyond-5G and 6G wireless communication systems is the investigation on systems that jointly perform comm…
Analysis of UAV Communications in Cell-Free Massive MIMO systems
Carmen D'Andrea, Adrian Garcia-Rodriguez, Giovanni Geraci +2
We study support for unmanned aerial vehicle (UAV) communications through a cell-free massive MIMO architecture, wherein a large number of access points (APs) is deployed in place…
Uplink power control in cell-free massive MIMO via deep learning
Carmen D'Andrea, Alessio Zappone, Stefano Buzzi +1
This paper focuses on the use of a deep learning approach to perform sum-rate-max and max-min power allocation in the uplink of a cell-free massive MIMO network. In particular, we…
Cell-free Massive MIMO for UAV Communications
Carmen D'Andrea, Adrian Garcia-Rodriguez, Giovanni Geraci +2
We study support for unmanned aerial vehicle (UAV) communications through a cell-free massive MIMO architecture. Under the general assumption that the propagation channel between t…
Communications and Radar Coexistence in the Massive MIMO Regime: Uplink Analysis
Carmen D'Andrea, Stefano Buzzi, Marco Lops
This paper considers the uplink of a massive MIMO communication system using 5G New Radio-compliant multiple access, which is to co-exist with a radar system using the same frequen…