Results 11 to 20 of about 1,169 (175)

On the Ergodic Capacity of Reconfigurable Intelligent Surface (RIS)-Aided MIMO Channels

open access: yes2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall), 2022
Accepted by IEEE VTC 2022 ...
Chongjun Ouyang   +3 more
openaire   +4 more sources

Energy efficiency maximisation for STAR‐RIS assisted full‐duplex communications

open access: yesIET Communications, 2023
Reconfigurable intelligent surface (RIS) has emerged as a promising technique for enhancing the performance of wireless networks. However, the traditional reflecting‐only RIS requires that the transmitter and receiver ought to be on the same side of the ...
Pengxin Guan   +3 more
doaj   +1 more source

Transmit Power Optimization of Simultaneous Transmission and Reflection RIS Assisted Full-Duplex Communications

open access: yesIEEE Access, 2022
Reconfigurable intelligent surface (RIS) has been proven to be a promising technology for improving the performance of future wireless systems. However, since conventional RIS can only reflect or transmit (i.e., refract) incident signals, it limits the ...
Yiru Wang   +3 more
doaj   +1 more source

A Review of Phase-Change Materials and Their Potential for Reconfigurable Intelligent Surfaces

open access: yesMicromachines, 2023
Phase-change materials (PCMs) and metal-insulator transition (MIT) materials have the unique feature of changing their material phase through external excitations such as conductive heating, optical stimulation, or the application of electric or magnetic
Randy Matos, Nezih Pala
doaj   +1 more source

Beamforming design for active RIS‐aided NOMA networks

open access: yesIET Communications, 2023
This paper studies the beamforming design for an active reconfigurable intelligent surface (RIS) aided non‐orthogonal multiple access (NOMA) network. It aims to minimize the transmission power while satisfying the requirement of the quality of service ...
Fengming Yang, Jianxin Dai, Cunhua Pan
doaj   +1 more source

WWRF46: Reconfigurable Intelligent Surfaces (RIS) For V2V Communications

open access: yes, 2021
Reconfigurable intelligent surfaces (RISs),otherwise known as Large Intelligent Surfaces, recentlyemerged as promising 5G technology applications that canachieve high spectrum and energy efficiency for futurewireless networks by integrating a massive number oflow-cost and passive reflecting elements.
Ambakar, Devika M., Mohan, Seshadri
openaire   +1 more source

Reconfigurable Intelligent Surface (RIS)-Aided Vehicular Networks: Their Protocols, Resource Allocation, and Performance [PDF]

open access: yesIEEE Vehicular Technology Magazine, 2022
Reconfigurable intelligent surfaces (RISs) assist in paving the way for the evolution of conventional vehicular networks to autonomous driving. Having said that, the 3rd Generation Partnership Project (3GPP) faces numerous open challenges concerning the RIS-aided vehicle-to-everything (V2X) solutions of the near future.
Yuanbin Chen   +4 more
openaire   +2 more sources

Cross-Tier Interference Mitigation for RIS-Assisted Heterogeneous Networks

open access: yesTechnologies, 2023
With the development of the next generation of mobile networks, new research challenges have emerged, and new technologies have been proposed to address them.
Abdel Nasser Soumana Hamadou   +2 more
doaj   +1 more source

Hierarchical Reconfigurable Metasurface Based on Scenario-Guided Functional Modules and Programmable Core. [PDF]

open access: yesAdv Sci (Weinh)
This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Zhu L   +11 more
europepmc   +2 more sources

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

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