Reconfigurable-intelligent-surface empowered wireless communications: Challenges and opportunities

X Yuan, YJA Zhang, Y Shi, W Yan… - IEEE wireless …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) are regarded as a promising emerging hardware
technology to improve the spectrum and energy efficiency of wireless networks by artificially …

Matrix-calibration-based cascaded channel estimation for reconfigurable intelligent surface assisted multiuser MIMO

H Liu, X Yuan, YJA Zhang - IEEE Journal on Selected Areas in …, 2020 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is envisioned to be an essential component of the
paradigm for beyond 5G networks as it can potentially provide similar or higher array gains …

Channel estimation for semi-passive reconfigurable intelligent surfaces with enhanced deep residual networks

Y Jin, J Zhang, X Zhang, H Xiao, B Ai… - IEEE transactions on …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is envisioned as an essential paradigm for realizing
the sixth-generation networks, due to the use of low-cost reflecting elements for establishing …

Approximate message passing for channel estimation in reconfigurable intelligent surface aided MIMO multiuser systems

C Ruan, Z Zhang, H Jiang, J Dang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Channel estimation is one of the main challenges for implementing reconfigurable intelligent
surface (RIS)-aided communication system with a large number of antennas at the base …

Channel estimation approach for RIS assisted MIMO systems

E Shtaiwi, H Zhang, S Vishwanath… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
Reconfigurable Intelligent Surfaces (RISs) are planner surfaces that include a large number
of passively radiating elements. By changing the phase shifts of these passive elements …

[PDF][PDF] 基于矢量近似消息传递的智能反射面辅助毫米波信道估计

王丹, 梁家敏, 梅志强, 刘金枝 - 电子与信息学报, 2022 - jeit.ac.cn
毫米波属于一种典型的视距传输方式, 其受大气吸收影响严重. 针对毫米波的非视距传播受限,
该文通过智能反射面(IRS) 辅助毫米波通信, 提出结合Khatri-Rao 积的矢量近似消息传递(KR …

A Low-Complexity Channel Estimation in Internet of Vehicles in Intelligent Transportation Systems for 5G Communication

L Yan - Journal of Organizational and End User Computing …, 2023 - igi-global.com
The objective of utilizing mmWave/subTHz bands in next-generation wireless
communications is to be achieved. Despite this, since reconfigurable intelligent surface …

Channel Estimation for IRS-Assisted mmWave Vehicle-to-Vehicle Communication Systems

X Liang, Z Liu, W Cao, S Zhao, S Liu, X Zhao - Wireless Personal …, 2024 - Springer
As one of the key technologies of 6 G, intelligent reflection surface (IRS) is expected to
effectively improve the performance of vehicular communication system. Although IRS has …

Reconfigurable Intelligent Surfaces: Channel Estimation and Applications in Future Wireless Networks

E Shtaiwi - 2023 - uh-ir.tdl.org
Abstract Reconfigurable Intelligent Surfaces (RISs) are planar structures comprising
passive, low-cost reflecting elements that efficiently manipulate the electromagnetic (EM) …

Spatial feature aided optimal compressive phase training and channel estimation in massive MIMO systems with RIS

P Fang, L Lian - ICC 2022-IEEE International Conference on …, 2022 - ieeexplore.ieee.org
Accurate channel state information (CSI) acquisition with low pilot overhead has always
been a problem for RIS-assisted massive MIMO systems. The design of phase shifts at RIS …