Cell-free massive MIMO versus small cells

HQ Ngo, A Ashikhmin, H Yang… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
A Cell-Free Massive MIMO (multiple-input multiple-output) system comprises a very large
number of distributed access points (APs), which simultaneously serve a much smaller …

Cell-free massive MIMO: Uniformly great service for everyone

HQ Ngo, A Ashikhmin, H Yang… - 2015 IEEE 16th …, 2015 - ieeexplore.ieee.org
We consider the downlink of Cell-Free Massive MIMO systems, where a very large number
of distributed access points (APs) simultaneously serve a much smaller number of users …

Precoding and power optimization in cell-free massive MIMO systems

E Nayebi, A Ashikhmin, TL Marzetta… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
Cell-free Massive multiple-input multiple-output (MIMO) comprises a large number of
distributed low-cost low-power single antenna access points (APs) connected to a network …

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 …

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 …

Cell-free massive MIMO: User-centric approach

S Buzzi, C D'Andrea - IEEE Wireless Communications Letters, 2017 - ieeexplore.ieee.org
Recently, the so-called cell-free (CF) massive MIMO architecture has been introduced,
wherein a very large number of distributed access points simultaneously and jointly serve a …

Max-min QoS power control in generalized cell-free massive MIMO-NOMA with optimal backhaul combining

TK Nguyen, HH Nguyen… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
This paper studies the uplink (UL) transmission of a generalized cell-free massive multiple-
input multiple-output (massive MIMO) system in which multiple base stations (or access …

Performance of cell-free massive MIMO systems with MMSE and LSFD receivers

E Nayebi, A Ashikhmin, TL Marzetta… - 2016 50th Asilomar …, 2016 - ieeexplore.ieee.org
Cell-Free Massive MIMO comprises a large number of distributed single-antenna access
points (APs) serving a much smaller number of users. There is no partitioning into cells and …

Spectral and energy efficiency of superimposed pilots in uplink massive MIMO

D Verenzuela, E Björnson… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Next-generation wireless networks aim at providing substantial improvements in spectral
efficiency (SE) and energy efficiency (EE). Massive MIMO has been proved to be a viable …

Ubiquitous cell-free massive MIMO communications

G Interdonato, E Björnson, H Quoc Ngo… - EURASIP Journal on …, 2019 - Springer
Since the first cellular networks were trialled in the 1970s, we have witnessed an incredible
wireless revolution. From 1G to 4G, the massive traffic growth has been managed by a …