Uplink channel estimation with reduced fronthaul overhead in cell-free massive MIMO systems

T Zhao, S Chen, R Zhang, HH Chen… - IEEE Wireless …, 2022 - ieeexplore.ieee.org
This letter focuses on the problem of uplink channel estimation with the reduced fronthaul
overhead in cell-free massive multiple-input multiple-output (mMIMO) systems. First, we …

An efficient downlink channel estimation approach for TDD massive MIMO systems

Y Nan, L Zhang, X Sun - 2016 IEEE 83rd Vehicular Technology …, 2016 - ieeexplore.ieee.org
In this paper, channel estimation problem for downlink massive multi-input multi-output
(MIMO) system is considered. Motivated by the observation that channels in massive MIMO …

Expectation-propagation based low-complexity channel estimation for massive MIMO systems

C Wei, Z Zhang, H Liu - 2017 IEEE International Conference on …, 2017 - ieeexplore.ieee.org
In this paper we propose a low-computational-complexity channel estimation algorithm for
the downlink of massive MIMO systems. This algorithm employs the expectation propagation …

Group Bayesian sparse channel estimation for massive MIMO systems

H Chen, C Qi - GLOBECOM 2017-2017 IEEE Global …, 2017 - ieeexplore.ieee.org
In massive MIMO systems, different wireless channels starting from the same user antenna
to different base station (BS) antennas usually share a common channel support. In this …

Efficient sparse Bayesian channel estimation for near-field ultra-scale massive MIMO systems

J Cao, J Du, M Han, J Liu, X Li… - IEEE Wireless …, 2023 - ieeexplore.ieee.org
In this letter, we propose an efficient off-grid sparse Bayesian learning (SBL) algorithm to
estimate the near-field (NF) channel in ultra-scale massive multiple-input multiple-output …

Downlink channel estimation for massive MIMO systems relying on vector approximate message passing

S Wu, H Yao, C Jiang, X Chen… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
To reduce the pilot overhead of downlink channel estimation in massive multiple-input-
multiple-output (MIMO) systems, a sparse recovery algorithm relying on the vector …

Block expectation propagation for downlink channel estimation in massive MIMO systems

S Wu, Z Ni, X Meng, L Kuang - IEEE communications letters, 2016 - ieeexplore.ieee.org
To address the challenging problem of downlink channel estimation with low pilot overhead
in massive multiple-input multiple-output (MIMO) systems, an empirical Bayesian block …

Channel estimation for massive MIMO-OTFS systems via sparse Bayesian learning with 2-D local beta process

F Zhang, W Ji, L Qiu - 2022 IEEE Wireless Communications …, 2022 - ieeexplore.ieee.org
Massive multiple-input multiple-output (MIMO) enables reliability in low latency
communication systems. This paper proposes a channel estimation scheme in orthogonal …

Hybrid message passing approach for uplink massive MIMO channel estimation

S Wang, L Zhou, W Xu, J Dai - IEEE Wireless Communications …, 2022 - ieeexplore.ieee.org
Massive MIMO channel has a sparse representation in the angular domain, but it is difficult
to utilize such sparsity for uplink channel estimation due to the coupling effect caused by …

Low-overhead hierarchically-sparse channel estimation for multiuser wideband massive MIMO

G Wunder, S Stefanatos, A Flinth… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Numerical evidence suggests that compressive sensing (CS) approaches for wideband
massive MIMO channel estimation can achieve very good performance with limited training …