Pilot design for Gaussian mixture channel estimation in massive MIMO

Y Gu, YD Zhang - … on Acoustics, Speech and Signal Processing …, 2018 - ieeexplore.ieee.org
Massive multiple-input multiple-output (MIMO) is a promising technique for 5G
communications due to its superior spectrum and energy efficiencies. Despite its many …

Low-complexity channel estimation scheme for cell-free massive MIMO with hardware impairment

M Xie, X Yu, J Xu, X Dang - GLOBECOM 2022-2022 IEEE …, 2022 - ieeexplore.ieee.org
Cell-free (CF) massive multi-input multi-output (mMIMO) is a potential key technology in
future 6G wireless networks, which is in a position to service many users uniformly. In this …

Angle-based multipath estimation and beamforming for FDD cell-free massive MIMO

A Abdallah, MM Mansour - 2019 IEEE 20th International …, 2019 - ieeexplore.ieee.org
In this paper, we study frequency-division duplexing (FDD) based cell-free massive multiple-
input multiple-output (MIMO) systems wherein distributed multi-antenna access points (APs) …

FDD massive MIMO: Efficient downlink probing and uplink feedback via active channel sparsification

MB Khalilsarai, S Haghighatshoar… - 2018 IEEE …, 2018 - ieeexplore.ieee.org
In this paper, we propose a novel method for efficient implementation of a massive Multiple-
Input Multiple-Output (massive MIMO) system with Frequency Division Duplexing (FDD) …

Optimizing pilots and analog processing for channel estimation in cell-free massive MIMO with one-bit ADCs

SH Park, O Simeone, YC Eldar… - 2018 IEEE 19th …, 2018 - ieeexplore.ieee.org
In a cell-free cloud radio access network (C-RAN) architecture, uplink channel estimation is
carried out by a centralized baseband processing unit (BBU) connected to distributed …

FDD-based cell-free massive MIMO systems

S Kim, B Shim - 2018 IEEE 19th International Workshop on …, 2018 - ieeexplore.ieee.org
Cell-free massive MIMO system is a promising technology of 5G wireless communications
that provide a user-centric coverage to the user by the basestation cooperation. Most prior …

Cell-free massive MIMO with normalized conjugate beamforming and channel non-reciprocities

Y Zhang, W Xia, Y Zhu, G Zheng… - 2021 13th International …, 2021 - ieeexplore.ieee.org
This paper focuses on a generalized downlink cell-free massive multiple-input multiple-
output (CF-mMIMO) system with normalized conjugate beamforming (NCB) and channel …

Cell-free massive MIMO with low-resolution ADCs over spatially correlated channels

J Zhang, J Zhang, B Ai - ICC 2020-2020 IEEE International …, 2020 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (MIMO) is a promising technology for future
wireless networks. One main challenge of realizing practical cell-free massive MIMO is the …

Efficient eigenspace training and precoding for FDD massive MIMO systems

B Zhang, LJ Cimini… - GLOBECOM 2017-2017 …, 2017 - ieeexplore.ieee.org
In cellular systems, deploying a large number of antennas at the base station (BS), also
called massive multiple-input multiple-output (MIMO), can offer a huge improvement in …

Local partial zero-forcing combining for cell-free massive MIMO systems

J Zhang, J Zhang, E Björnson… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (MIMO) provides more uniform spectral
efficiency (SE) for users (UEs) than cellular technology. The main challenge to achieve the …