Reconfigurable intelligent surfaces assisted communications with limited phase shifts: How many phase shifts are enough?

H Zhang, B Di, L Song, Z Han - IEEE Transactions on Vehicular …, 2020 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) has drawn a great attention worldwide as it can
create favorable propagation conditions by controlling the phase shifts of the reflected …

Active reconfigurable intelligent surfaces-aided wireless communication system

MH Khoshafa, TMN Ngatched… - IEEE …, 2021 - ieeexplore.ieee.org
In this letter, we investigate the use of active elements in reconfigurable intelligent surfaces
(RIS) to overcome the double-fading problem introduced in the RIS-aided link in a wireless …

Reconfigurable intelligent surfaces-assisted communications with discrete phase shifts: How many quantization levels are required to achieve full diversity?

P Xu, G Chen, Z Yang… - IEEE Wireless …, 2020 - ieeexplore.ieee.org
Due to hardware limitations, the phase shifts of the reflecting elements of reconfigurable
intelligent surfaces (RISs) need to be quantized into discrete values. This letter aims to …

Reconfigurable intelligent surfaces in 6G: Reflective, transmissive, or both?

S Zeng, H Zhang, B Di, Y Tan, Z Han… - IEEE …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) have attracted wide interest from industry and
academia since they can shape the wireless environment into a desirable form at low cost …

Reconfigurable intelligent surface assisted multi-user communications: How many reflective elements do we need?

H Zhang, B Di, Z Han, HV Poor… - IEEE wireless …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) consisting of multiple reflective elements are a
promising technique to enhance communication quality as they can create favorable …

Active reconfigurable intelligent surface-aided wireless communications

R Long, YC Liang, Y Pei… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless
environment in a controllable way. To compensate for the double-fading attenuation in the …

Electromagnetic interference in RIS-aided communications

A de Jesus Torres, L Sanguinetti… - IEEE Wireless …, 2021 - ieeexplore.ieee.org
The prospects of using a reconfigurable intelligent surface (RIS) to aid wireless
communication systems have recently received much attention. Among the different use …

Performance analysis of RIS-aided systems with practical phase shift and amplitude response

Y Zhang, J Zhang, M Di Renzo… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) have drawn significant attention due to their
capability of controlling the radio environment and improving the system performance. In this …

How much do hardware imperfections affect the performance of reconfigurable intelligent surface-assisted systems?

AAA Boulogeorgos, A Alexiou - IEEE Open Journal of the …, 2020 - ieeexplore.ieee.org
In the present work, we investigate the impact of transceiver hardware imperfection on
reconfigurable intelligent surface (RIS)-assisted wireless systems. In this direction, first, we …

Reconfigurable intelligent surfaces with reflection pattern modulation: Beamforming design and performance analysis

S Lin, B Zheng, GC Alexandropoulos… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
Recent research on reconfigurable intelligent surfaces (RISs) suggests that RISs can
perform passive beamforming and information transfer (PBIT) simultaneously via smart …