An overview of signal processing techniques for RIS/IRS-aided wireless systems

C Pan, G Zhou, K Zhi, S Hong, T Wu… - IEEE Journal of …, 2022 - ieeexplore.ieee.org
In the past as well as present wireless communication systems, the wireless propagation
environment is regarded as an uncontrollable black box that impairs the received signal …

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 …

Simultaneously transmitting and reflecting (STAR) RIS aided wireless communications

X Mu, Y Liu, L Guo, J Lin… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The novel concept of simultaneously transmitting and reflecting (STAR) reconfigurable
intelligent surfaces (RISs) is investigated, where the incident wireless signal is divided into …

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 …

[HTML][HTML] Federated learning for 6G: Applications, challenges, and opportunities

Z Yang, M Chen, KK Wong, HV Poor, S Cui - Engineering, 2022 - Elsevier
Standard machine-learning approaches involve the centralization of training data in a data
center, where centralized machine-learning algorithms can be applied for data analysis and …

Single and multi-agent deep reinforcement learning for AI-enabled wireless networks: A tutorial

A Feriani, E Hossain - IEEE Communications Surveys & …, 2021 - ieeexplore.ieee.org
Deep Reinforcement Learning (DRL) has recently witnessed significant advances that have
led to multiple successes in solving sequential decision-making problems in various …

Intelligent reflecting surface-aided wireless energy and information transmission: An overview

Q Wu, X Guan, R Zhang - Proceedings of the IEEE, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is a promising technology for achieving spectrum and
energy-efficient wireless networks cost-effectively. Most existing works on IRS have focused …

Energy-efficient wireless communications with distributed reconfigurable intelligent surfaces

Z Yang, M Chen, W Saad, W Xu… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
This paper investigates the problem of resource allocation for a wireless communication
network with distributed reconfigurable intelligent surfaces (RISs). In this network, multiple …

Intelligent reflecting surface enhanced multi-UAV NOMA networks

X Mu, Y Liu, L Guo, J Lin… - IEEE Journal on Selected …, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) enhanced multi-unmanned aerial vehicle (UAV) non-
orthogonal multiple access (NOMA) networks are investigated. A new transmission …

Power scaling law analysis and phase shift optimization of RIS-aided massive MIMO systems with statistical CSI

K Zhi, C Pan, H Ren, K Wang - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
This paper considers an uplink reconfigurable intelligent surface (RIS)-aided massive
multiple-input multiple-output (MIMO) system, where the phase shifts of the RIS are …