Results 31 to 40 of about 10,463 (206)
EURASIP Journal on Wireless Communications and Networking, 2022 The fifth generation (5G) of telecommunications networks is currently commercially deployed. One of their core enabling technologies is cellular Massive Multiple-Input-Multiple-Output (M-MIMO) systems.
Lazaros Alexios Iliadis +5 more
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Analysis of UAV Communications in Cell-Free Massive MIMO Systems
IEEE Open Journal of the Communications Society, 2020 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 of large co-located massive MIMO arrays.
Carmen D'Andrea +4 more
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Adaptive Hybrid Precoding Strategy for Cell-Free Massive MIMO [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2023 This work presents an adaptive hybrid signal precoding strategy for Cell-Free (CF) Massive multiple-input multiple-output (MIMO) systems. The proposed solution exploits the advantages of both distributed and centralized signal processing schemes to ...
Dercio M. Mathe +7 more
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Foundations of User-Centric Cell-Free Massive MIMO [PDF]
, 2021 Imagine a coverage area where each mobile device is communicating with a preferred set of wireless access points (among many) that are selected based on its needs and cooperate to jointly serve it, instead of creating autonomous cells. This effectively leads to a user-centric post-cellular network architecture, which can resolve many of the ...
Demir O. T., Bjornson E., Sanguinetti L.
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IEEE Access, 2021 The intelligent reflecting surface (IRS) is considered a core technology of next-generation mobile communication. It has significant advantages in enhancing network coverage, spectrum efficiency, energy efficiency, and deployment cost.
Tao Zhou +4 more
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On the Total Energy Efficiency of Cell-Free Massive MIMO [PDF]
, 2017 We consider the cell-free massive multiple-input multiple-output (MIMO) downlink, where a very large number of distributed multiple-antenna access points (APs) serve many single-antenna users in the same time-frequency resource.
Duong, Trung Q. +4 more
core +2 more sources
Power minimization for GSIC-based uplink cell-free massive MIMO-NOMA systems
EURASIP Journal on Advances in Signal Processing, 2022 Non-orthogonal multiple access (NOMA) and multiple-input multiple-output (MIMO) are considered promising techniques to satisfy the demands for high spectrum efficiency and massive connectivity in future wireless communication.
Tao Cui +3 more
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How Much Do Downlink Pilots Improve Cell-Free Massive MIMO? [PDF]
, 2016 In this paper, we analyze the benefits of including downlink pilots in a cell-free massive MIMO system. We derive an approximate per-user achievable downlink rate for conjugate beamforming processing, which takes into account both uplink and downlink ...
Frenger, Pål +3 more
core +2 more sources
A Review on Cell-Free Massive MIMO Systems
Electronics, 2023 Cell-free massive multiple-input multiple-output (CF mMIMO) can be considered as a potential physical layer technology for future wireless networks since it can benefit from all the advantages of distributed antenna systems (DASs) and network MIMOs, such as macro-diversity gain, high channel capacity, and link reliability.
Joumana Kassam +4 more
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Scalable Cell-Free Massive MIMO with Multiple CPUs
Mathematics, 2022 In this paper, we consider the uplink of a scalable cell-free massive MIMO (CF-M-MIMO) system where user equipments (UEs) are served only by a subset of access points (APs).
Feiyang Li +3 more
doaj +1 more source