Joint optimization for RIS-assisted wireless communications: From physical and electromagnetic perspectives

X Cheng, Y Lin, W Shi, J Li, C Pan… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) are envisioned to be a disruptive wireless
communication technique that is capable of reconfiguring the wireless propagation …

Reconfigurable intelligent surface-assisted system models for uplink communications

H Park, TH Nguyen, L Park - 2022 13th International …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is a novel hardware technique that can build a
programmable wireless environment with passive reflecting elements. RIS can enhance …

Antenna selection for reconfigurable intelligent surfaces: A transceiver-agnostic passive beamforming configuration

C Xu, J An, T Bai, S Sugiura… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is capable of improving the wireless system
performance by steering the reflected signal in the desired direction. One of the major …

Channel training & estimation for reconfigurable intelligent surfaces: Exposition of principles, approaches, and open problems

B Shamasundar, N Daryanavardan… - IEEE Access, 2023 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RIS) are passive controllable arrays of small reflectors
that direct electromagnetic energy towards or away from the target nodes, thereby allowing …

Overhead-aware design of reconfigurable intelligent surfaces in smart radio environments

A Zappone, M Di Renzo, F Shams… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces have emerged as a promising technology for future
wireless networks. Given that a large number of reflecting elements is typically used and that …

Multi-functional reconfigurable intelligent surface: System modeling and performance optimization

W Wang, W Ni, H Tian, YC Eldar… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
In this paper, we propose and study a multi-functional reconfigurable intelligent surface (MF-
RIS) architecture. In contrast to conventional single-functional RIS (SF-RIS) that only reflects …

Max-min SINR optimization for RIS-aided uplink communications with green constraints

A Subhash, A Kammoun, A Elzanaty… - IEEE Wireless …, 2023 - ieeexplore.ieee.org
Smart radio environments aided by reconfigurable intelligent surfaces (RIS) have attracted
much research attention recently. We propose a joint optimization strategy for beamforming …

A random access protocol for RIS-aided wireless communications

V Croisfelt, F Saggese, I Leyva-Mayorga… - 2022 IEEE 23rd …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) are arrays of passive elements that can control
the reflection of the incident electromagnetic waves. While RISs are particularly useful to …

Two–way communications via reconfigurable intelligent surface

S Atapattu, R Fan, P Dharmawansa… - 2020 IEEE Wireless …, 2020 - ieeexplore.ieee.org
The novel reconfigurable intelligent surface (RIS) is an emerging technology which
facilitates high spectrum and energy efficiencies in Beyond 5G and 6G wireless …

Reconfigurable intelligent surface for FDD systems: Design and optimization

H Zhou, YC Liang, R Long, L Zhao… - IEEE Internet of Things …, 2023 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) has recently emerged as a promising technology for
wireless communications, which intelligently controls the phase shift of each unit cell to form …