Results 81 to 90 of about 775 (171)

Cell-Free Massive MIMO

, 2018
Cell-free massive multiple-input multiple-output (MIMO) is a system comprising a very large number of access points (hundreds or thousands of access points) and a relatively smaller number of active users (tens or hundreds of users) distributed over a large area. The access points use directly measured channel characteristics to jointly serve all users
openaire   +2 more sources

UAV-Empowered Scalable Cell-Free Massive MIMO Systems

IEEE Open Journal of the Communications Society
The integration of aerial and terrestrial infrastructures is widely regarded as a key enabler for sixth-generation (6G) wireless networks, particularly when combined with distributed multiple-input multiple-output technologies.
Guillem Femenias, Felip Riera-Palou
doaj   +1 more source

Joint User-Centric Clustering and Pilot Allocation for Scalable Cell-Free Massive MIMO System

International Journal of Technology
Cell-free massive multiple-input multiple-output (MIMO) is a promising technology where many access points (APs) cooperate to jointly serve user equipments (UEs) within the same time-frequency resource. However, the initial form of cell-free massive MIMO
Irma Zakia, Muhammad Brata
doaj   +1 more source

Cell-Free Massive MIMO Power Consumption with Serial Front-Hauls

Telecom
Massive MIMO deployments have been traditionally based on dedicated links in the front-haul, i.e., between the central processing units and the Access Points (APs). Recently, cell-free massive Multiple-Input Multiple-Output (MIMO) systems based on serial
Danaisy Prado-Alvarez, Saúl Inca, David Martín-Sacristán, Jose F. Monserrat   +3 more
doaj   +1 more source

Cell-Free Terahertz Massive MIMO: A Novel Paradigm Beyond Ultra-Massive MIMO

2024 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)
The Fourth IEEE International Mediterranean Conference on Communications and Networking (IEEE MEDITCOM 2024), July 2024, Madrid ...
Wei Jiang 0002, Hans D. Schotten
openaire   +2 more sources

Cell-Free Massive MIMO With Multi-Antenna Users and Phase Misalignments: A Novel Partially Coherent Transmission Framework

IEEE Open Journal of the Communications Society
CELL-FREE massive multiple-input multiple-output (MIMO) is a promising technology for next-generation communication systems. This work proposes a novel partially coherent (PC) transmission framework to cope with the challenge of phase misalignment among ...
Unnikrishnan Kunnath Ganesan, Tung Thanh Vu, Erik G. Larsson   +2 more
doaj   +1 more source

On the Distribution of SINR for Cell-Free Massive MIMO Systems

IEEE Transactions on Communications
Cell-free (CF) massive multiple-input multiple-output (mMIMO) has been considered as a potential technology for Beyond 5G communication systems. However, the performance of CF mMIMO systems has not been well studied. Most existing analytical work on CF mMIMO systems is based on the expected signal-to-interference-plus-noise ratio (SINR).
Baolin Chong, Fengqian Guo, Hancheng Lu, Langtian Qin   +3 more
openaire   +2 more sources

A Left-Null-Space-Based Massive Access Method for Cell-Free Massive MIMO IoT Systems. [PDF]

Sensors (Basel), 2023
Wang Y, Wang Y, Hu D.
europepmc   +1 more source

Scalable Cell-Free Massive MIMO With Indoor/Outdoor Users

IEEE Open Journal of Vehicular Technology
Cell-free networks are expected to be a forthcoming (r)evolutionary step in the coming generation of mobile networks, the so called 6 G. While mobile infrastructure is often assumed to be deployed outdoor by the operators, reality is that most of the ...
Felip Riera-Palou, Miquel Duran, Guillem Femenias   +2 more
doaj   +1 more source

Joint User Clustering and Graph Coloring Based Pilot Assignment for Cell-Free Massive MIMO Systems. [PDF]

Sensors (Basel), 2023
Huang X, Wang Y, Chen S, Li Y, Wu Y.
europepmc   +1 more source