Results 1 to 10 of about 22,297 (253)

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   +6 more sources

Enhancing active reconfigurable intelligent surface

open access: yesIntelligent and Converged Networks, 2022
A Reconfigurable Intelligent Surface (RIS) panel comprises many independent Reflective Elements (REs). One possible way to implement an RIS is to use a binary passive load impedance connected to an antenna element to achieve the modulation of reflected ...
Muhammad I. Khalil
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

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

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   +2 more sources

A filtering reconfigurable intelligent surface for interference-free wireless communications [PDF]

open access: yesNature Communications
The powerful capability of reconfigurable intelligent surfaces (RISs) in tailoring electromagnetic waves and fields has put them under the spotlight in wireless communications.
Jing Cheng Liang   +9 more
doaj   +2 more sources

Joint Symbol-Level Precoding and Reflecting Designs for IRS-Enhanced MU-MISO Systems [PDF]

open access: yes, 2021
Intelligent reflecting surfaces (IRSs) have emerged as a revolutionary solution to enhance wireless communications by changing propagation environment in a cost-effective and hardware-efficient fashion.
Li, M, Liu, Q, Liu, R, Swindlehurst, AL
core   +2 more sources

Experimental Demonstration of a mmWave Passive Access Point Extender Based on a Binary Reconfigurable Intelligent Surface

open access: yesFrontiers in Communications and Networks, 2021
As data rates demands are exploding, 5G will soon rely on mmWaves that offer much higher bandwidths. Yet at these frequencies, attenuation and diffraction of waves require point to point communications with beamforming base stations that are complex and ...
Vladislav Popov   +7 more
doaj   +1 more source

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