Results 21 to 30 of about 1,048 (180)

An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation

open access: yesIEEE Access, 2022
Recently, a reconfigurable intelligent surface (RIS) that provides alternative wireless propagation paths (by reflecting an electromagnetic wave from a base station in desired directions) has attracted attention as a key facilitating technology for ...
Jungi Jeong   +4 more
doaj   +1 more source

Overview of reconfigurable intelligent surface for new-generation mobile communication

open access: yesDianxin kexue, 2022
Reconfigurable intelligent surface technology, which features low cost, low energy consumption and easy deployment, is the potential key technology of 6G.By intelligently regulating electromagnetic waves in space, RIS can assist in building an ...
Zilu GAO, Shaohui SUN, Li LI
doaj   +2 more sources

RIS-aided integrated sensing and communication: a mini-review

open access: yesFrontiers in Signal Processing, 2023
Integrating sensing and communication (ISAC) is a cutting-edge technology aimed at achieving high-resolution target sensing and high data-rate communications using a shared spectrum. This innovative approach optimizes the usage of the radio spectrum with
Mirza Asif Haider, Yimin D. Zhang
doaj   +1 more source

iRIS: A Deep Policy Learning Framework for Intelligent Distribution of RIS Elements

open access: yesIEEE Open Journal of the Communications Society
In the recent past, extensive research has been conducted considering reconfigurable intelligent surface (RIS) as an important building block in wireless communication systems.
Sudhanshu Arya   +3 more
doaj   +1 more source

6G MIMO Spatio-Temporal Data Scattering for Reconfigurable Intelligent Surface (RIS) Performance

open access: yes, 2022
Orbital Angular Momentum (OAM), provides the new angular or mode dimension for wireless communications, offers an intriguing way for anti-jamming. The unprecedented demands for high-quality and seamless wireless services impose continuous challenges to existing cellular networks.
Azeemi, Naeem Zafar   +1 more
openaire   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

open access: yesAdvanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai   +6 more
wiley   +1 more source

Enhanced Spectral Efficiency in RIS-Assisted MIMO Systems Through Joint Precoding and RIS Configuration

open access: yesIEEE Access
Reconfigurable Intelligent Surfaces (RIS) offer a promising solution to enhance wireless communication performance, particularly for 6G networks. This paper proposes a unified joint optimization framework to enhance spectral efficiency in reconfigurable ...
Mohammed Adil Abbas   +3 more
doaj   +1 more source

Survey on reconfigurable intelligent surfaces below 10 GHz

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
Reconfigurable intelligent surface (RIS) is a programmable structure that can be used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the surface.
Visa Tapio   +4 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

Estimation of Uplink Channels for Multiple Users Using Tensor Modeling in RIS-Aided MISO Communication

open access: yesSakarya University Journal of Computer and Information Sciences, 2023
In this paper estimation of uplink channels using tensor modeling is addressed for multiple users in a reconfigurable intelligent surface (RIS)-aided multiple-input single-output (MISO) communication.
Rıfat Volkan Şenyuva
doaj   +1 more source

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