6G wireless communications networks: A comprehensive survey

M Alsabah, MA Naser, BM Mahmmod… - Ieee …, 2021 - ieeexplore.ieee.org
The commercial fifth-generation (5G) wireless communications networks have already been
deployed with the aim of providing high data rates. However, the rapid growth in the number …

Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: A survey

HI Obakhena, AL Imoize, FI Anyasi… - Journal of Engineering …, 2021 - Springer
In recent times, the rapid growth in mobile subscriptions and the associated demand for high
data rates fuels the need for a robust wireless network design to meet the required capacity …

Foundations of user-centric cell-free massive MIMO

ÖT Demir, E Björnson… - Foundations and Trends …, 2021 - nowpublishers.com
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 …

Prospective multiple antenna technologies for beyond 5G

J Zhang, E Björnson, M Matthaiou… - IEEE Journal on …, 2020 - ieeexplore.ieee.org
Multiple antenna technologies have attracted much research interest for several decades
and have gradually made their way into mainstream communication systems. Two main …

Making cell-free massive MIMO competitive with MMSE processing and centralized implementation

E Björnson, L Sanguinetti - IEEE Transactions on Wireless …, 2019 - ieeexplore.ieee.org
Cell-free Massive MIMO is considered as a promising technology for satisfying the
increasing number of users and high rate expectations in beyond-5G networks. The key idea …

Channel estimation for cell-free mmWave massive MIMO through deep learning

Y Jin, J Zhang, S Jin, B Ai - IEEE Transactions on Vehicular …, 2019 - ieeexplore.ieee.org
The combination of cell-free massive multiple-input multiple-output (MIMO) systems along
with millimeter-wave (mmWave) bands is indeed one of most promising technological …

Tabu-search-based pilot assignment for cell-free massive MIMO systems

H Liu, J Zhang, X Zhang, A Kurniawan… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
In this correspondence, an efficient pilot assignment scheme based on tabu search (TS) is
proposed to mitigate the severe pilot contamination effect caused by pilot reuse in cell-free …

Secure transmission scheme based on fingerprint positioning in cell-free massive MIMO systems

J Qiu, K Xu, X Xia, Z Shen, W Xie… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this paper, we mainly study how to improve the secure transmission performance of cell-
free massive multiple-input multiple-output (MIMO) systems by using location technology. In …

On the performance of cell-free massive MIMO with low-resolution ADCs

Y Zhang, M Zhou, X Qiao, H Cao, L Yang - IEEE Access, 2019 - ieeexplore.ieee.org
This paper considers an uplink cell-free massive multi-input multi-output (mMIMO) system
with multi-antenna access points (APs) and users, assuming low-resolution analog-to-digital …

Max-min fairness optimization in uplink cell-free massive MIMO using meta-heuristics

F Conceição, CH Antunes, M Gomes… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
One of the most promising technologies to be employed in beyond 5G networks is based on
the concept of cell-free (CF) massive MIMO, in which a predetermined set of access points …