Downlink power optimization for cell-free massive MIMO over spatially correlated Rayleigh fading channels

J Qiu, K Xu, X Xia, Z Shen, W Xie - IEEE Access, 2020 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (mMIMO) is regarded as a promising
technology in the future wireless communication. This paper aims to minimize the downlink …

Impact of antenna distribution on spectral and energy efficiency of cell-free massive MIMO with transmit power control algorithms

M Ito, I Kanno, K Yamazaki, Y Kishi… - IEEE Open Journal …, 2022 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (CF-mMIMO) systems are expected to
provide faster and more robust connections to user equipments by cooperation of a massive …

Energy efficiency of uplink cell-free massive MIMO with transmit power control in measured propagation channel

T Choi, M Ito, I Kanno, J Gomez-Ponce… - IEEE Open Journal …, 2021 - ieeexplore.ieee.org
Cell-free massive MIMO (CF-mMIMO) provides wireless connectivity for a large number of
user equipments (UEs) using access points (APs) distributed across a wide area with high …

Spectral and energy efficiency in cell-free massive MIMO systems over correlated Rician fading

SN Jin, DW Yue, HH Nguyen - IEEE Systems Journal, 2020 - ieeexplore.ieee.org
In this article, we investigate the downlink (DL) of a cell-free massive multiple-input multiple-
output (MIMO) system over spatially correlated Rician fading, in which many distributed …

Uplink performance of cell-free massive MIMO over spatially correlated Rician fading channels

Z Wang, J Zhang, E Björnson… - IEEE Communications …, 2020 - ieeexplore.ieee.org
We consider a practical cell-free massive multiple-input-multiple-output (MIMO) system with
multi-antenna access points (APs) and spatially correlated Rician fading channels. The …

Downlink training in cell-free massive MIMO: A blessing in disguise

G Interdonato, HQ Ngo, P Frenger… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Cell-free Massive MIMO (multiple-input multiple-output) refers to a distributed Massive MIMO
system where all the access points (APs) cooperate to coherently serve all the user …

Performance of cell-free massive MIMO with joint user clustering and access point selection

R Wang, M Shen, Y He, X Liu - IEEE Access, 2021 - ieeexplore.ieee.org
We consider an uplink cell-free massive multiple-input multiple-output (MIMO) system, in
which the access points are connected to the central processing unit (CPU) through a …

Cell-free massive MIMO: Zero forcing and conjugate beamforming receivers

Y Zhang, H Cao, M Zhou, L Yang - Journal of Communications …, 2019 - ieeexplore.ieee.org
In this paper, the uplink performance of cell-free massive multi-input multi-output (mMIMO)
system with the zero-forcing (ZF) and conjugate beamforming (CB) receivers is investigated …

Pilot power control for cell-free massive MIMO

TC Mai, HQ Ngo, M Egan… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
In this correspondence paper, we consider a cell-free massive Multiple-Input Multiple-Output
(MIMO) system where access points (APs) serve a much smaller number of users under the …

Joint power and user grouping 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 grouping problem is investigated in this …