Ultradense Cell-Free Massive MIMO for 6G: Technical Overview and Open Questions

HQ Ngo, G Interdonato, EG Larsson… - Proceedings of the …, 2024 - ieeexplore.ieee.org
Ultradense cell-free massive multiple-input multiple-output (CF-MMIMO) has emerged as a
promising technology expected to meet the future ubiquitous connectivity requirements and …

[BOOK][B] Foundations of MIMO communication

RW Heath Jr, A Lozano - 2018 - books.google.com
Understand the fundamentals of wireless and MIMO communication with this accessible and
comprehensive text. Viewing the subject through an information theory lens, but also …

Overview of precoding techniques for massive MIMO

MA Albreem, AH Al Habbash, AM Abu-Hudrouss… - IEEE …, 2021 - ieeexplore.ieee.org
Massive multiple-input multiple-output (MIMO) is playing a crucial role in the fifth generation
(5G) and beyond 5G (B5G) communication systems. Unfortunately, the complexity of …

Quantized precoding for massive MU-MIMO

S Jacobsson, G Durisi, M Coldrey… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
Massive multiuser (MU) multiple-input multiple-output (MIMO) is foreseen to be one of the
key technologies in fifth-generation wireless communication systems. In this paper, we …

Massive MIMO linear precoding: A survey

N Fatema, G Hua, Y **ang, D Peng… - IEEE systems …, 2017 - ieeexplore.ieee.org
Recently, massive multiple-input multiple-output (MIMO) system has attracted tremendous
research interests in wireless communications. Among various performance aspects and …

Channel estimation for massive MIMO using Gaussian-mixture Bayesian learning

CK Wen, S **, KK Wong, JC Chen… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
Pilot contamination posts a fundamental limit on the performance of massive multiple-input-
multiple-output (MIMO) antenna systems due to failure in accurate channel estimation. To …

No downlink pilots are needed in TDD massive MIMO

HQ Ngo, EG Larsson - IEEE Transactions on Wireless …, 2017 - ieeexplore.ieee.org
We consider the Massive Multiple-Input Multiple-Output downlink with maximum-ratio and
zero-forcing processing and time-division duplex operation. To decode, the users must know …

[BOOK][B] Massive MIMO: Fundamentals and system designs

HQ Ngo - 2015 - books.google.com
The last ten years have seen a massive growth in the number of connected wireless
devices. Billions of devices are connected and managed by wireless networks. At the same …

Downlink spectral efficiency of cell-free massive MIMO systems with multi-antenna users

TC Mai, HQ Ngo, TQ Duong - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
This paper studies a cell-free massive multiple-input multiple-output (MIMO) system where
its access points (APs) and users are equipped with multiple antennas. Two transmission …

SoftNull: Many-antenna full-duplex wireless via digital beamforming

E Everett, C Shepard, L Zhong… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In this paper, we present and study a digital-controlled method, called SoftNull, to enable full-
duplex in many-antenna systems. Unlike most designs that rely on analog cancelers to …