Results 111 to 120 of about 3,484 (213)

Energy efficiency optimization study of sub-connected ARIS-assisted ISAC system over millimeter wave channels

Dianxin kexue
In order to solve the problems of large energy consumption, and poor performance gain of RIS in the traditional reconfigurable intelligent surface (RIS)-assisted integrated sensing and communication (ISAC) system, the sub-connected active reconfigurable ...
WU Xiangkai, YUE Dianwu, YUAN Meng, XU Miao, YANG Jianing   +4 more
doaj  

Application of RIS for device position estimation

openIn questa tesi viene analizzata la possibilità di determinare la posizione di un dispositivo nello spazio utilizzando un canale di comunicazione dotato di una superficie RIS (Reconfigurable Intelligent Surface). L’obiettivo principale è valutare la
BELLESE, GIULIO
core  

RIS reflection pattern design for vehicular platoon communications in mmWave channels

ICT Express
In this paper, we propose a reflection pattern design scheme for reconfigurable intelligent surface (RIS) assisted vehicular platoon communications in millimeter wave (mmWave) channels.
Jong-Ho Lee, Jiho Song
doaj   +1 more source

Active Reconfigurable Intelligent Surface-Based Symbiotic Radio: Boosting Mutual Benefits

International audienceIn this paper, we investigate a novel active reconfigurable intelligent surface (RIS)-based multiple-input single-output (MISO) symbiotic radio (SR) system where an active RIS leverages its controllable reflecting elements (REs) to ...
Liang, Ying-Chang, Long, Ruizhe, Di Renzo, Marco   +2 more
core   +1 more source

Beamforming design for Star-RIS assisted secure wireless communication system under hardware impairments

EURASIP Journal on Wireless Communications and Networking
Simultaneous transmission and reflection reconfigurable intelligent surface (Star-RIS) has been recently introduced as one of the hopeful technologies in future communications.
Seyedeh Reyhane Shahcheragh, Kamal Mohamed-Pour   +1 more
doaj   +1 more source

Saturation in Two-Timescale RIS Beamforming

IEEE Open Journal of the Communications Society
This paper investigates reconfigurable intelligent surface (RIS)-assisted wireless communications under a two-timescale architecture, in which the RIS phase shifts are optimized from long-term channel statistics, eliminating per-element training and ...
Masoud Sadeghian, Angel Lozano, Gabor Fodor   +2 more
doaj   +1 more source

Thin Film Reconfigurable Intelligent Surface for Harmonic Beam Steering

Publisher Copyright: AuthorsIn this letter, we explore an implementation of a novel thin film 1times 4 reconfigurable intelligent surface (RIS) designed for future communication and sensing scenarios.
Xie, Boxuan, Karakoc, Alp, Mela, Lauri, Lietzen, Jari, Ruttik, Kalle, Kuznetsov, Aleksandr D., Jantti, Riku   +6 more
core   +1 more source

Reconfigurable Intelligent Surfaces (RIS) and Their Role in Next‐Generation Wireless Networks: An Overview

Transactions on Emerging Telecommunications Technologies
ABSTRACTExtensive research is now peering into the next generation of wireless technology. The significant talking points are how to effectively manage scarce wireless resources with the spiraling amount of wireless data traffic and the exponential growth of the number of nodes occupying the wireless communication ecosystem.
Chukwuemeka Nwufo, Oluyomi Simpson, Yichuang Sun   +2 more
openaire   +1 more source

Reconfigurable Intelligent Surface (RIS)-Assisted Non-Terrestrial Network (NTN)-Based 6G Communications: A Contemporary Survey. [PDF]

Sensors (Basel)
Worka CE, Khan FA, Ahmed QZ, Sureephong P, Alade T.   +4 more
europepmc   +1 more source

Cluster-Based Strategy for Maximizing the Sum-Rate of a Distributed Reconfigurable Intelligent Surface (RIS)-Assisted Coordinated Multi-Point Non-Orthogonal Multiple-Access (CoMP-NOMA) System. [PDF]

Sensors (Basel)
Yang Q, Zhang Q, Peng Y.
europepmc   +1 more source