FDD Massive MIMO: How to Optimally Combine UL Pilot and Limited DL CSI Feedback?

J Kim, J Choi, J Park, A Alkhateeb, N Lee - arXiv preprint arXiv …, 2024 - arxiv.org
In frequency-division duplexing (FDD) multiple-input multiple-output (MIMO) systems,
obtaining accurate downlink channel state information (CSI) for precoding is vastly …

Performance of Multi-RIS-aided Cell-Free Massive MIMO: Do More RISs Always Help?

B Al-Nahhas, M Obeed, A Chaaban… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Cell free (CF) massive multiple-input multiple-output (mMIMO) is a promising technology in
realizing beyond fifth generation (B5G) networks. Massive deployment of access points …

Block compressive channel estimation and feedback for FDD massive MIMO

Z Gao, L Dai, W Dai, Z Wang - 2015 IEEE Conference on …, 2015 - ieeexplore.ieee.org
Channel state information (CSI) at the base station (BS) is required to fully exploit the
advantages of massive MIMO. However, due to massive BS antennas, the estimation and …

Downlink training overhead reduction technique for FDD massive MIMO systems

A Mayouche, A Metref, J Choi - IEEE Signal Processing Letters, 2018 - ieeexplore.ieee.org
In this letter, a novel minimum mean square error (MSE) based channel estimation
framework is proposed to reduce the downlink channel training overhead in frequency …

A low complexity burst channel estimation algorithm for FDD massive MIMO systems

N Nouri, MJ Azizipour - Physical Communication, 2022 - Elsevier
To fully attain array gains of massive multiple-input multiple-output (MIMO) and its energy
and spectral efficiency, deriving channel state information (CSI) at the base station (BS) side …

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 …

Asymptotic analysis for cell-free massive MIMO with MMSE combining and low-resolution ADCs

Y Xiong, S Sun, N Wei, L Liu… - IEEE Communications …, 2021 - ieeexplore.ieee.org
This letter analyses the asymptotic performance of cell-free massive multiple-input and
multiple-output (MIMO) with low-resolution analog-to-digital converters (ADCs) over spatially …

Joint Port Selection Based Channel Acquisition for FDD Cell-Free Massive MIMO

C Zhang, P Du, M Ding, Y Jing… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
In frequency division duplexing (FDD) cell-free massive MIMO, the acquisition of the channel
state information (CSI) is very challenging because of the large overhead required for the …

Channel Estimation for FDD Massive MIMO With Complex Residual Denoising Network

Q Zhao, X Zeng, Z Fan, Q Zhang… - IEEE Wireless …, 2024 - ieeexplore.ieee.org
In order to improve the performance of downlink channel estimation in frequency division
duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, we propose a …

A compressive sensing and deep learning-based time-varying channel estimation for fdd massive mimo systems

J Fan, P Liang, Z Jiao, X Han - IEEE Transactions on Vehicular …, 2022 - ieeexplore.ieee.org
To achieve the performance gains of massive multiple-input multiple-output (MIMO) systems,
the downlink channel state information (CSI) must be acquired at the base station (BS). In …