User-centric cell-free massive MIMO networks: A survey of opportunities, challenges and solutions

HA Ammar, R Adve, S Shahbazpanahi… - … Surveys & Tutorials, 2021 - ieeexplore.ieee.org
Densification of network base stations is indispensable to achieve the stringent Quality of
Service (QoS) requirements of future mobile networks. However, with a dense deployment of …

[HTML][HTML] A survey on user-centric cell-free massive MIMO systems

S Chen, J Zhang, J Zhang, E Björnson, B Ai - Digital Communications and …, 2022 - Elsevier
The mobile data traffic has been exponentially growing during the last several decades. This
was enabled by the densification of the network infrastructure in terms of increased cell …

Joint power allocation and load balancing optimization for energy-efficient cell-free massive MIMO networks

T Van Chien, E Björnson… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Large-scale distributed antenna systems with many access points (APs) that serve the users
by coherent joint transmission is being considered for 5G-and-beyond networks. The …

Downlink resource allocation in multiuser cell-free MIMO networks with user-centric clustering

HA Ammar, R Adve, S Shahbazpanahi… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
In this paper, we optimize user scheduling, power allocation and beamforming in distributed
multiple-input multiple-output (MIMO) networks implementing user-centric clustering. We …

A review of energy efficiency and power control schemes in ultra-dense cell-free massive MIMO systems for sustainable 6G wireless communication

AL Imoize, HI Obakhena, FI Anyasi, SN Sur - Sustainability, 2022 - mdpi.com
The traditional multiple input multiple output (MIMO) systems cannot provide very high
Spectral Efficiency (SE), Energy Efficiency (EE), and link reliability, which are critical to …

Energy-efficient access-point sleep-mode techniques for cell-free mmWave massive MIMO networks with non-uniform spatial traffic density

J García-Morales, G Femenias, F Riera-Palou - IEEE access, 2020 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (MIMO) is a novel beyond 5G (B5G) and 6G
paradigm that, through the use of a common central processing unit (CPU), coordinates a …

A review on cell-free massive MIMO systems

J Kassam, D Castanheira, A Silva, R Dinis, A Gameiro - Electronics, 2023 - mdpi.com
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 …

Joint power control and access point scheduling in fronthaul-constrained uplink cell-free massive MIMO systems

M Guenach, AA Gorji… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Cell-free (CF) massive Multiple-Input Multiple-Output (MIMO) with large number of
distributed access points (APs) has emerged as a new paradigm allowing higher macro …

Energy efficient AP selection for cell-free massive MIMO systems: Deep reinforcement learning approach

N Ghiasi, S Mashhadi, S Farahmand… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
The problem of access point (AP) to device association in a cell-free massive multiple-input
multiple-output (MIMO) system is investigated. Utilizing energy efficiency (EE) as our main …

Joint power and user grou** optimization in cell-free massive MIMO systems

F Guo, H Lu, Z Gu - IEEE Transactions on Wireless …, 2021 - ieeexplore.ieee.org
To relieve the stress on channel estimation and decoding complexity in cell-free massive
multiple-input multiple-output (MIMO) systems, user grou** problem is investigated in this …