A Tutorial on Holographic MIMO Communications—Part I: Channel Modeling and Channel Estimation [PDF]
IEEE Communications Letters, 2023 By integrating a nearly infinite number of reconfigurable elements into a finite space, a spatially continuous array aperture is formed for holographic multiple-input multiple-output (HMIMO) communications.
Jiancheng An +5 more
semanticscholar +1 more source
Channel Estimation for FAS-Assisted Multiuser mmWave Systems [PDF]
IEEE Communications Letters, 2023 This letter investigates the challenge of channel estimation in a multiuser millimeter-wave (mmWave) time-division duplexing (TDD) system. In this system, the base station (BS) uses a multi-antenna uniform linear array (ULA), while each mobile user has a
Hao Xu +8 more
semanticscholar +1 more source
A Survey on Channel Estimation and Practical Passive Beamforming Design for Intelligent Reflecting Surface Aided Wireless Communications [PDF]
IEEE Communications Surveys and Tutorials, 2021 Intelligent reflecting surface (IRS) has emerged as a key enabling technology to realize smart and reconfigurable radio environment for wireless communications, by digitally controlling the signal reflection via a large number of passive reflecting ...
Beixiong Zheng +3 more
semanticscholar +1 more source
Channel Estimation for RIS Assisted Wireless Communications—Part II: An Improved Solution Based on Double-Structured Sparsity [PDF]
IEEE Communications Letters, 2021 Reconfigurable intelligent surface (RIS) can manipulate the wireless communication environment by controlling the coefficients of RIS elements. However, due to the large number of passive RIS elements without signal processing capability, channel ...
Xiuhong Wei, Decai Shen, L. Dai
semanticscholar +1 more source
Off-grid Channel Estimation with Sparse Bayesian Learning for OTFS Systems [PDF]
IEEE Transactions on Wireless Communications, 2021 This paper proposes an off-grid channel estimation scheme for orthogonal time-frequency space (OTFS) systems adopting the sparse Bayesian learning (SBL) framework.
Zhiqiang Wei +4 more
semanticscholar +1 more source
Iterative Joint Estimation Procedure of Channel and PDP for OFDM Systems
Entropy, 2022 The power-delay profile (PDP) estimation of wireless channels is an important step to generate a channel correlation matrix for channel linear minimum mean square error (LMMSE) estimation.
Ruixuan He +5 more
doaj +1 more source
Near-Field Channel Estimation in Mixed LoS/NLoS Environments for Extremely Large-Scale MIMO Systems [PDF]
IEEE Transactions on Communications, 2022 Accurate channel model and channel estimation are essential to empower extremely large-scale MIMO (XL-MIMO) in 6G networks with ultra-high spectral efficiency.
Yu Lu, L. Dai
semanticscholar +1 more source
An Improved SAMP Algorithm for Sparse Channel Estimation in OFDM System. [PDF]
Sensors (Basel), 2023 Channel estimation of an orthogonal frequency division multiplexing (OFDM) system based on compressed sensing can effectively reduce the pilot overhead and improve the utilization rate of spectrum resources.
Hu H, Zhao X, Chen S, Huang T.
europepmc +2 more sources
Machine Learning-Based 5G-and-Beyond Channel Estimation for MIMO-OFDM Communication Systems. [PDF]
Sensors (Basel), 2021 Channel estimation plays a critical role in the system performance of wireless networks. In addition, deep learning has demonstrated significant improvements in enhancing the communication reliability and reducing the computational complexity of 5G-and ...
Le HA +4 more
europepmc +2 more sources
Model-Driven Deep-Learning-Based Underwater Acoustic OTFS Channel Estimation
Journal of Marine Science and Engineering, 2023 Accurate channel estimation is the fundamental requirement for recovering underwater acoustic orthogonal time–frequency space (OTFS) modulation signals.
Yuzhi Zhang +4 more
doaj +1 more source