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 …

Mobility support for millimeter wave communications: Opportunities and challenges

J Li, Y Niu, H Wu, B Ai, S Chen, Z Feng… - … Surveys & Tutorials, 2022 - ieeexplore.ieee.org
Millimeter-wave (mmWave) communication technology offers a potential and promising
solution to support 5G and B5G wireless networks in dynamic scenarios and applications …

Joint design of hybrid beamforming and reflection coefficients in RIS-aided mmWave MIMO systems

R Li, B Guo, M Tao, YF Liu, W Yu - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
This paper considers a reconfigurable intelligent surface (RIS)-aided millimeter wave
(mmWave) downlink communication system where hybrid analog-digital beamforming is …

Beamforming technologies for ultra-massive MIMO in terahertz communications

B Ning, Z Tian, W Mei, Z Chen, C Han… - IEEE Open Journal …, 2023 - ieeexplore.ieee.org
Terahertz (THz) communications with a frequency band 0.1–10 THz are envisioned as a
promising solution to future high-speed wireless communication. Although with tens of …

Two-timescale design for reconfigurable intelligent surface-aided massive MIMO systems with imperfect CSI

K Zhi, C Pan, H Ren, K Wang… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
This paper investigates the two-timescale transmission scheme for reconfigurable intelligent
surface (RIS)-aided massive multiple-input multiple-output (MIMO) systems, where the …

Joint hybrid and passive RIS-assisted beamforming for mmWave MIMO systems relying on dynamically configured subarrays

C Feng, W Shen, J An, L Hanzo - IEEE Internet of Things …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS)-assisted millimeter-wave (mmWave) communication
systems relying on hybrid beamforming structures are capable of achieving high spectral …

Double intelligent reflecting surface-assisted multi-user MIMO mmwave systems with hybrid precoding

H Niu, Z Chu, F Zhou, C Pan, DWK Ng… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This work investigates the effect of double intelligent reflecting surface (IRS) in improving the
spectrum efficient of multi-user multiple-input multiple-output (MIMO) network operating in …

Secure and energy efficient transmission for IRS-assisted cognitive radio networks

X Wu, J Ma, Z Xing, C Gu, X Xue… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The spectrum efficiency (SE) and security of the secondary users (SUs) in the cognitive radio
networks (CRNs) have become two main issues due to the limitation interference to the …

Channel estimation for IRS-assisted millimeter-wave MIMO systems: Sparsity-inspired approaches

T Lin, X Yu, Y Zhu, R Schober - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Due to their ability to create favorable line-of-sight (LoS) propagation environments,
intelligent reflecting surfaces (IRSs) are regarded as promising enablers for future millimeter …

Joint active and passive beamforming for IRS-assisted radar

F Wang, H Li, J Fang - IEEE Signal Processing Letters, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is a promising technology being considered for future
wireless communications due to its ability to control signal propagation. This paper …