Hybrid reinforcement learning for STAR-RISs: A coupled phase-shift model based beamformer

R Zhong, Y Liu, X Mu, Y Chen, X Wang… - IEEE Journal on …, 2022 - ieeexplore.ieee.org
A simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)
assisted multi-user downlink multiple-input single-output (MISO) communication system is …

Weighted sum-rate maximization for STAR-RISs-aided networks with coupled phase-shifters

H Niu, X Liang - IEEE Systems Journal, 2022 - ieeexplore.ieee.org
In this letter, we investigate the optimization in a simultaneously transmitting and reflecting
reconfigurable intelligent surface-enabled network with a coupled coefficient model, where …

Unsupervised learning-based joint active and passive beamforming design for reconfigurable intelligent surfaces aided wireless networks

H Song, M Zhang, J Gao… - ieee communications …, 2020 - ieeexplore.ieee.org
This letter consider a reconfigurable intelligent surface (RIS) aided multi-user multiple-input
single-output (MISO) downlink system, where transmit beamforming and phase shifts of RIS …

Double deep learning for joint phase-shift and beamforming based on cascaded channels in RIS-assisted MIMO networks

K Li, C Huang, Y Gong, G Chen - IEEE wireless …, 2023 - ieeexplore.ieee.org
This letter investigates machine learning approach for the joint optimal phase shift and
beamforming in the reconfigurable intelligent surface (RIS) assisted multiple-input and …

Beamforming for STAR-RIS-Aided Integrated Sensing and Communication Using Meta DRL

Y Eghbali, S Faramarzi, SK Taskou… - IEEE Wireless …, 2024 - ieeexplore.ieee.org
We consider an integrated sensing and communication (ISAC) system, in which a
simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) …

Weighted sum rate optimization for STAR-RIS-assisted MIMO system

H Niu, Z Chu, F Zhou, P Xiao… - IEEE transactions on …, 2021 - ieeexplore.ieee.org
In this work, we study a simultaneous transmitting and reflecting reconfigurable intelligent
surface (RIS)-assisted multiple-input multiple-output network. For the system under …

Collaborative intelligent reflecting surface networks with multi-agent reinforcement learning

J Zhang, J Li, Y Zhang, Q Wu, X Wu… - IEEE Journal of …, 2022 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is envisioned to be widely applied in future wireless
networks. In this paper, we investigate a multi-user communication system assisted by …

Deep reinforcement learning based intelligent reflecting surface optimization for MISO communication systems

K Feng, Q Wang, X Li, CK Wen - IEEE Wireless …, 2020 - ieeexplore.ieee.org
This letter investigates the intelligent reflecting surface (IRS)-aided multiple-input single-
output wireless transmission system. Particularly, the optimization of the passive phase shift …

Joint user scheduling, phase shift control, and beamforming optimization in intelligent reflecting surface-aided systems

R Huang, VWS Wong - IEEE Transactions on Wireless …, 2022 - ieeexplore.ieee.org
In this paper, we formulate a joint uplink scheduling, phase shift control, and beamforming
optimization problem in intelligent reflecting surface (IRS)-aided systems. We consider …

Low-cost passive beamforming for RIS-aided wideband OFDM systems

Z He, H Shen, W Xu, C Zhao - IEEE Wireless Communications …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) has become a promising solution to improve the
performance of future wireless systems with low energy consumptions. Concerning a RIS …