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 …

Intelligent reflecting surface-aided wireless communications: A tutorial

Q Wu, S Zhang, B Zheng, C You… - IEEE transactions on …, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal
propagation in wireless networks. By smartly tuning the signal reflection via a large number …

Reconfigurable intelligent surfaces: Principles and opportunities

Y Liu, X Liu, X Mu, T Hou, J Xu… - … surveys & tutorials, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs), also known as intelligent reflecting surfaces
(IRSs), or large intelligent surfaces (LISs), 1 have received significant attention for their …

Smart radio environments empowered by reconfigurable intelligent surfaces: How it works, state of research, and the road ahead

M Di Renzo, A Zappone, M Debbah… - IEEE journal on …, 2020 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) are an emerging transmission technology for
application to wireless communications. RISs can be realized in different ways, which …

Channel estimation with reconfigurable intelligent surfaces—A general framework

AL Swindlehurst, G Zhou, R Liu, C Pan… - Proceedings of the …, 2022 - ieeexplore.ieee.org
Optimally extracting the advantages available from reconfigurable intelligent surfaces (RISs)
in wireless communications systems requires estimation of the channels to and from the RIS …

An optimal channel estimation scheme for intelligent reflecting surfaces based on a minimum variance unbiased estimator

TL Jensen, E De Carvalho - ICASSP 2020-2020 IEEE …, 2020 - ieeexplore.ieee.org
In a wireless system with Intelligent Reflective Surfaces (IRS) containing many passive
elements, we consider the problem of channel estimation. All the links from the transmitter to …

Two-timescale channel estimation for reconfigurable intelligent surface aided wireless communications

C Hu, L Dai, S Han, X Wang - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Channel estimation is challenging for the reconfigurable intelligent surface (RIS)-aided
wireless communications. Since the number of coefficients of the cascaded channel among …

Learning to reflect and to beamform for intelligent reflecting surface with implicit channel estimation

T Jiang, HV Cheng, W Yu - IEEE Journal on Selected Areas in …, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective
elements, is capable of enhancing the wireless propagation environment in a cellular …

A comprehensive review on artificial intelligence/machine learning algorithms for empowering the future IoT toward 6G era

MR Mahmood, MA Matin, P Sarigiannidis… - IEEE …, 2022 - ieeexplore.ieee.org
The evolution of the wireless network systems over decades has been providing new
services to the users with the help of innovative network and device technologies. In recent …

Pervasive machine learning for smart radio environments enabled by reconfigurable intelligent surfaces

GC Alexandropoulos, K Stylianopoulos… - Proceedings of the …, 2022 - ieeexplore.ieee.org
The emerging technology of reconfigurable intelligent surfaces (RISs) is provisioned as an
enabler of smart wireless environments, offering a highly scalable, low-cost, hardware …