Results 111 to 120 of about 6,053 (218)

The graphene application for the Reconfigurable Intelligent Surface (RIS) design for the NOMA-RIS-MIMO system. Phenomenological view.

, 2023
<p>The material is dedicated to various aspects of graphene metasurface implementation of the Reconfigurable Intelligent Surface (RIS) in the framework of the incoherent paradigm for NOMA-RIS-MIMO transmission design. Digital coded model of the metasurface is considered in the framework of the general representation of the graphene metasurface as
openaire   +1 more source

Performance Analysis of RIS-Assisted Communication With Direct Link: A New Copula Application

IEEE Open Journal of the Communications Society
Reconfigurable intelligent surface (RIS) has received remarkable attention as a promising solution to enhance the capacity and coverage of wireless cellular networks. In this paper, we evaluate the performance of RIS-assisted communication systems in the
Damoon Shahbaztabar, Imene Trigui, Wei-Ping Zhu, Wessam Ajib   +3 more
doaj   +1 more source

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  

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

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

Surface Wave Technique Enabled RIS Applications [PDF]

Increasing demands on high-performance platforms in the sixth generation (6G) of mobile communications raise research focus on new transducers. Recently, reconfigurable Intelligent Surfaces (RIS) have been proposed to address both the coverage and power ...
Tong, KF, Wong, KK
core  

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

RIS-assisted wireless communications: prototype validation and measurement progress

Dianxin kexue
In recent years, reconfigurable intelligent surface (RIS) is regarded as one of the promising technologies for 6G because of low power consumption, low cost and the ability to improve communication transmission rate.
YANG Chenhong, SANG Jian, LI Xiao, TANG Wankai, JIN Shi   +4 more
doaj   +2 more sources

Phase shift optimization in reconfigurable intelligent surface-assisted UAV in hierarchical aerial computing networks. [PDF]

Sci Rep
Diaa B, Ibrahim II, Abdelhaleem AM, Abdelhakam MM.   +3 more
europepmc   +1 more source