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 for intelligent reflecting surface assisted multiuser communications: Framework, algorithms, and analysis

Z Wang, L Liu, S Cui - IEEE Transactions on Wireless …, 2020 - ieeexplore.ieee.org
In intelligent reflecting surface (IRS) assisted communication systems, the acquisition of
channel state information is a crucial impediment for achieving the beamforming gain of IRS …

Asymptotic max-min SINR analysis of reconfigurable intelligent surface assisted MISO systems

A Kammoun, A Chaaban, M Debbah… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
This work focuses on the downlink of a single-cell multi-user system in which a base station
(BS) equipped with M antennas communicates with K single-antenna users through a …

Reconfigurable intelligent surface aided NOMA networks

T Hou, Y Liu, Z Song, X Sun, Y Chen… - IEEE Journal on …, 2020 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) constitute a promising performance enhancement
for next-generation (NG) wireless networks in terms of enhancing both their spectral …

Joint beamforming design in multi-cluster MISO NOMA reconfigurable intelligent surface-aided downlink communication networks

Y Li, M Jiang, Q Zhang, J Qin - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Considering reconfigurable intelligent surfaces (RISs), we study a multi-cluster multiple-
input-single-output (MISO) non-orthogonal multiple access (NOMA) downlink …

RIS enhanced massive non-orthogonal multiple access networks: Deployment and passive beamforming design

X Liu, Y Liu, Y Chen, HV Poor - IEEE Journal on Selected Areas …, 2020 - ieeexplore.ieee.org
A novel framework is proposed for the deployment and passive beamforming design of a
reconfigurable intelligent surface (RIS) with the aid of non-orthogonal multiple access …

RIS-assisted coverage enhancement in millimeter-wave cellular networks

M Nemati, J Park, J Choi - IEEE Access, 2020 - ieeexplore.ieee.org
The use of millimeter-wave (mmWave) bandwidth is one key enabler to achieve the high
data rates in the fifth-generation (5G) cellular systems. However, mmWave signals suffer …

Reconfigurable intelligent surfaces for future wireless networks: A channel modeling perspective

E Basar, I Yildirim - IEEE Wireless Communications, 2021 - ieeexplore.ieee.org
While researchers have set their sights on future wireless networks of 2030, communications
through reconfigurable intelligent surfaces (RISs) appears as one of the potential enabling …

Joint beamforming and trajectory optimization for intelligent reflecting surfaces-assisted UAV communications

L Ge, P Dong, H Zhang, JB Wang, X You - IEEE Access, 2020 - ieeexplore.ieee.org
Unmanned aerial vehicle (UAV) and intelligent reflecting surface (IRS) are anticipated to be
widely applied for improving the spectrum and energy efficiency in the forthcoming wireless …

Spatial throughput characterization for intelligent reflecting surface aided multiuser system

J Lyu, R Zhang - IEEE Wireless Communications Letters, 2020 - ieeexplore.ieee.org
Intelligent Reflecting Surface (IRS) has been recently proposed as a promising solution to
enhance the spectral and energy efficiency of future wireless networks by tuning a massive …