Results 41 to 50 of about 1,655,438 (284)

Intelligent Spectrum Learning for Wireless Networks With Reconfigurable Intelligent Surfaces [PDF]

IEEE Transactions on Vehicular Technology, 2021
Reconfigurable intelligent surface (RIS) has become a promising technology for enhancing the reliability of wireless communications, which is capable of reflecting the desired signals through appropriate phase shifts. However, the intended signals that impinge upon an RIS are often mixed with interfering signals, which are usually dynamic and unknown ...
Bo Yang 0035, Xuelin Cao, Chongwen Huang, Chau Yuen, Lijun Qian, Marco Di Renzo   +5 more
openaire   +2 more sources

Active Reconfigurable Intelligent Surface-Assisted Cell-Free Massive MIMO

, 2023
International audienceThis work analyzes the spectral efficiency (SE) of theactive Reconfigurable intelligent surfaces (RIS)-assisted cell-free(CF) massive multiple-input multiple-output (mMIMO) underRayleigh fading channels.
Shin, Suho, Theodore, Woode, Anokye, Prince, Lee, Kyoung-Jae, Asiedu, Derek, Kwaku Pobi   +4 more
core   +1 more source

Time-domain Characterization of Reconfigurable Intelligent Surfaces for Wireless Communications

, 2022
Reconfigurable intelligent surfaces (RISs) are an emerging transmission technology for application to wireless communications. Their accurate modeling is crucial for an effective design. In this work, a time domain modeling is proposed that comprises two
Romano, D, Loreto, F, Antonini, G, Santucci, F, Alesii, R, Pettanice, G, Di Marco, P   +6 more
core   +1 more source

Enhancing active reconfigurable intelligent surface

Intelligent 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 radio waves. Each RE reflects incoming waves (incident signal) by using on/off modulation between two
openaire   +2 more sources

Blue communications for edge computing: the reconfigurable intelligent surfaces opportunity

, 2022
International audienceWireless traffic is exploding, due to the myriad of new connections and the exchange of capillary data at the edge of the networks to operate real-time processing and decision making. The latter especially affects the uplink traffic,
Clemente, Antonio, Airod, Fatima-Ezzahra, Calvanese Strinati, Emilio, Merluzzi, Mattia, Fatima Ezzahra Airod, Emilio Calvanese Strinati, Mattia Merluzzi, Antonio Clemente   +7 more
core   +1 more source

A survey on reconfigurable intelligent surfaces: Wireless communication perspective

IET Communications, 2023
Using reconfigurable intelligent surfaces (RISs) to improve the coverage and the data rate of future wireless networks is a viable option. These surfaces are constituted of a significant number of passive and nearly passive components that interact with ...
Saber Hassouna, Muhammad Ali Jamshed, James Rains, Jalil ur Rehman Kazim, Masood Ur Rehman, Mohammad Abualhayja, Lina Mohjazi, Tei Jun Cui, Muhammad Ali Imran, Qammer H. Abbasi   +9 more
doaj   +1 more source

Enabling NOMA in Backscatter Reconfigurable Intelligent Surfaces-Aided Systems

IEEE Access, 2021
One of the key enablers of future wireless communications is constituted by massive users can access the core network in wireless systems simultaneously, which can improve the spectral efficiency.
Chi-Bao Le, Dinh-Thuan Do, Xingwang Li, Yung-Fa Huang, Hsing-Chung Chen, Miroslav Voznak   +5 more
doaj   +1 more source

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

Advanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang, Mu‐Pai Lee, Jhen‐Dong Tsai, Liang‐Ying Hsieh, Jui‐Yuan Chen, Chun‐Wei Huang, Yen‐Fu Lin, Wen‐Wei Wu   +7 more
wiley   +1 more source

Machine Learning Approaches for Reconfigurable Intelligent Surfaces: A Survey

IEEE Access, 2022
Next-generation wireless networks must handle a growing density of mobile users while accommodating a rapid increase in mobile data traffic flow and a wide variety of services and applications.
K. M. Faisal, Wooyeol Choi
doaj   +1 more source

On The Optimal Number of Reflecting Elements for Reconfigurable Intelligent Surfaces

, 2020
International audienceThis work considers a point-to-point link where a reconfigurable intelligent surface assists the communication between a transmitter and a receiver. The system rate, energy efficiency, and their trade-off are optimized by tuning the
Zappone, Alessio, Di Renzo, Marco, Xi, Xiaojun, Debbah, Mérouane, Zappone, A.   +4 more
core   +1 more source