A survey on channel estimation and practical passive beamforming design for intelligent reflecting surface aided wireless communications

B Zheng, C You, W Mei, R Zhang - … Communications Surveys & …, 2022 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) has emerged as a key enabling technology to realize
smart and reconfigurable radio environment for wireless communications, by digitally …

Holographic MIMO communications: Theoretical foundations, enabling technologies, and future directions

T Gong, P Gavriilidis, R Ji, C Huang… - … Surveys & Tutorials, 2023 - ieeexplore.ieee.org
Future wireless systems are envisioned to create an endogenously holography-capable,
intelligent, and programmable radio propagation environment, that will offer unprecedented …

[HTML][HTML] Reconfigurable intelligent surfaces for smart wireless environments: channel estimation, system design and applications in 6G networks

YC Liang, J Chen, R Long, ZQ He, X Lin… - Science China …, 2021 - Springer
Reconfigurable intelligent surface (RIS), one of the key enablers for the sixth-generation
(6G) mobile communication networks, is considered by designers to smartly reconfigure the …

Channel estimation for reconfigurable intelligent surface aided MISO communications: From LMMSE to deep learning solutions

NK Kundu, MR McKay - IEEE Open Journal of the …, 2021 - ieeexplore.ieee.org
We consider multi-antenna wireless systems aided by reconfigurable intelligent surfaces
(RIS). RIS presents a new physical layer technology for improving coverage and energy …

Deep learning-based frequency-selective channel estimation for hybrid mmWave MIMO systems

A Abdallah, A Celik, MM Mansour… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems typically
employ hybrid mixed signal processing to avoid expensive hardware and high training …

RIS-aided mmWave MIMO channel estimation using deep learning and compressive sensing

A Abdallah, A Celik, MM Mansour… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) assisted wireless systems require accurate channel
state information (CSI) to control wireless channels and improve both the bandwidth and …

Deep multi-stage CSI acquisition for reconfigurable intelligent surface aided MIMO systems

S Gao, P Dong, Z Pan, GY Li - IEEE Communications Letters, 2021 - ieeexplore.ieee.org
This letter aims to reduce huge pilot overhead when estimating the reconfigurable intelligent
surface (RIS) relayed wireless channel. Motivated by the compelling grasp of deep learning …

Deep-learning based channel estimation for RIS-aided mmWave systems with beam squint

A Abdallah, A Celik, MM Mansour… - ICC 2022-IEEE …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) assisted wireless systems require accurate channel
state information (CSI) to control wireless channels and improve overall network …

A survey on optimal channel estimation methods for RIS-aided communication systems

SF Drampalou, NI Miridakis, HC Leligou, PA Karkazis - Signals, 2023 - mdpi.com
Next-generation wireless communications aim to utilize mmWave/subTHz bands. In this
regime, signal propagation is vulnerable to interferences and path losses. To overcome this …

Channel Estimation For RIS-Assisted MIMO Systems with Hardening Effects

E Shtaiwi, H Zhang, A Abdelhadi… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
Estimating accurate channel state information (CSI) is a prerequisite to benefit from the
deployment of reconfigurable intelligent surfaces (RISs). However, pilot overhead is …