Results 11 to 20 of about 5,333,513 (244)

Architecture for sub-100 ms liquid crystal reconfigurable intelligent surface based on defected delay lines [PDF]

open access: yesCommunications Engineering
Reconfigurable intelligent surfaces, comprised of passive tunable elements, are emerging as an essential device for upcoming millimeter wave and terahertz wireless systems. A fundamental aspect of the device involves the tuning technology used to achieve
Robin Neuder   +3 more
doaj   +4 more sources

Reconfigurable Intelligent Surface Optimal Placement in Millimeter-Wave Networks [PDF]

open access: yesIEEE Open Journal of the Communications Society, 2021
This work discusses the optimal reconfigurable intelligent surface placement in highly-directional millimeter wave links. In particular, we present a novel system model that takes into account the relationship between the transmission beam footprint at ...
Konstantinos Ntontin   +5 more
doaj   +2 more sources

Novel 1-bit hybrid reconfigurable intelligent surface [PDF]

open access: yesScientific Reports
Reconfigurable intelligent surfaces (RISs) are anticipated to play a key role in future smart wireless networks by enabling control over the propagation environment and improving communication performance.
Sajedeh Keshmiri   +2 more
doaj   +2 more sources

A reconfigurable intelligent surface with integrated sensing capability [PDF]

open access: yesScientific Reports, 2021
Reconfigurable reflective surfaces can alter the propagation environment to improve wireless communication and power transfer. Paramount to this operation—which has attracted much attention recently—is the assumption that the reflective surface has prior
Idban Alamzadeh   +3 more
doaj   +2 more sources

Passive Type Reconfigurable Intelligent Surface: Measurement of Radiation Patterns [PDF]

open access: yesMicromachines, 2023
The demand for unprecedented data and ubiquitous wireless connections have led to the adoption of new types of transmitters and receivers. Additionally, different new types of devices and technologies need to be proposed for such demand.
Biswarup Rana, Sung-Sil Cho, Ic-Pyo Hong
doaj   +2 more sources

Reconfigurable intelligent surface-assisted N-ary Alamouti [PDF]

open access: yesScientific Reports
Reconfigurable intelligent surface (RIS)-assisted transmission has become a novel concept for future wireless communications. The multiple-input multiple-output (MIMO)-based RIS-assisted Alamouti (RIS-Alamouti) scheme has been recently proposed in the ...
Hongjun Xu   +2 more
doaj   +2 more sources

Reconfigurable Intelligent Surface-Based Physical Layer Authentication Enhancement [PDF]

open access: yesSensors
This article introduces the reconfigurable intelligent surface (RIS) to physical layer authentication (PLA) designs to explore the utility of RIS in both the radio frequency fingerprint (RFF)/channel fingerprint (CF)-based PLA technique and the tag ...
Binting Su, He Fang, Junhui Zhao
doaj   +2 more sources

Resource Allocation for Reconfigurable Intelligent Surface Assisted Dual Connectivity [PDF]

open access: yesSensors, 2022
The next generation 6G wireless systems are envisioned to have higher reliability and capacity than the existing cellular systems. The reconfigurable intelligent surfaces (RISs)-assisted wireless networks are one of the promising solutions to control the
Yoghitha Ramamoorthi   +4 more
doaj   +2 more sources

Hybrid Deployment Optimization Algorithm for Reconfigurable Intelligent Surface [PDF]

open access: yesSensors
As a key 6G candidate technology, reconfigurable intelligent surface (RIS) integrates into sensor-communication systems, supporting positioning and sensing as environmental sensor nodes or anchors.
Yifan Lin   +3 more
doaj   +2 more sources

Wireless Communications Through Reconfigurable Intelligent Surfaces

open access: yesIEEE Access, 2019
The future of mobile communications looks exciting with the potential new use cases and challenging requirements of future 6th generation (6G) and beyond wireless networks. Since the beginning of the modern era of wireless communications, the propagation
Ertugrul Basar   +5 more
doaj   +3 more sources

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