Results 41 to 50 of about 5,333,513 (244)

A Deep Learning Based Modeling of Reconfigurable Intelligent Surface Assisted Wireless Communications for Phase Shift Configuration

IEEE Open Journal of the Communications Society, 2021
Reconfigurable Intelligent Surface (RIS) has emerged as a promising technology in wireless networks to achieve high spectrum and energy efficiency. RIS typically comprises a large number of low-cost nearly passive elements that can smartly interact with ...
Baoling Sheen, Jin Yang, Xianglong Feng, Md Moin Uddin Chowdhury   +3 more
doaj   +1 more source

Exploiting Reconfigurable Intelligent Surface-Based Uplink/Downlink Wireless Systems

IEEE Access, 2022
This paper analyzes the performance of an uplink/downlink reconfigurable intelligent surface (RIS)-based wireless system with a multiple-antenna base station (B), where the RIS selection strategy is considered to alleviate the overhead and resources ...
Khac-Tuan Nguyen, Thai-Hoc Vu, Sunghwan Kim   +2 more
doaj   +1 more source

Capacity Improvement in Reconfigurable Intelligent Surface Assisted MIMO Communications

IEEE Access, 2021
Reconfigurable intelligent surface (RIS) is thought to be a potential key technique for future wireless communications due to its ability for manipulating the electromagnetic environment smartly.
Jun Yang, Yijian Chen, Mengnan Jian, Jianwu Dou, Min Fang   +4 more
doaj   +1 more source

Reconfigurable Intelligent Surface-Assisted Radar Deception Electronic Counter-Countermeasures

Remote Sensing, 2023
A reconfigurable intelligent surface (RIS) is a promising technology for wireless communication and radar detection, owing to its superior ability to realize smart radio environments. Inspired by previous studies on RISs, this study deals with the use of
Shanshan Zhao, Biao Xie, Ziwei Liu, Jirui An   +3 more
doaj   +1 more source

A Reconfigurable Intelligent Surface for Arbitrary mm-Wave Polarization Using Parasitic Enhancing Structures

, 2023
The design of a reconfigurable intelligent surface (RIS) for mm-waves with arbitrary polarization is proposed. At mm-wave frequencies, the RF switches needed in the RIS suffer from low isolation, and therefore a parasitic enhancing structure (PES) is ...
Zhang, Yujie, Rao, Junhui, Murch, Ross
core   +1 more source

Autonomous Reconfigurable Intelligent Surfaces Through Wireless Energy Harvesting [PDF]

, 2022
In this paper, we examine the potential for a reconfigurable intelligent surface (RIS) to be powered by energy harvested from information signals. This feature might be key to reap the benefits of RIS technology's lower power consumption compared to ...
Abadal Cavallé, Sergi, Martins, Wallace Alves, Alexiou, Angeliki, Lazarakis, Fotis, Abadal, Sergi, ALVES MARTINS, Wallace, Boulogeorgos, Apostolos-Alexandros A., Selimis, Dimitrios, NTONTIN, Konstantinos, Björnson, Emil, CHATZINOTAS, Symeon, KISSELEFF, Steven, Boulogeorgos, Alexandros Apostolos A., Björnson, Emil,, Boulogeorgos, Alexandros-Apostolos A.,, Selimis, Dimitrios,, Alexiou, Angeliki,, Chatzinotas, Symeon,, Ntontin, Konstantinos,, Martins, Wallace Alves,, Kisseleff, Steven,, Abadal, Sergi,, Lazarakis, Fotis,   +22 more
core   +1 more source

Reconfigurable Intelligent Surface-Assisted Ambient Backscatter Communications -Experimental Assessment

, 2021
International audienceSixth generation (6G) mobile networks may include new passive technologies, such as ambient backscatter communication or the use of reconfigurable intelligent surfaces, to avoid the emission of waves and the corresponding energy ...
Phan-Huy, D.-T, de Rosny, J, Ourir, A, M. Di Renzo, A. Ourir, Fara, R, Di Renzo, Marco, P. Ratajczak, R. Fara, Ratajczak, P, J. De Rosny, D.-T. Phan-Huy   +11 more
core   +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

Reconfigurable intelligent surface with high optical-transparency based on metalmesh

Journal of Information and Intelligence, 2023
Reconfigurable intelligent surfaces (RISs) have aroused extensive attentions from academic and wireless communication communities due to their abilities to customize the electromagnetic (EM) characteristics of the propagation channels flexibly and ...
Jing Cheng Liang, Peng Zhang, Qiang Cheng, Tie Jun Cui   +3 more
doaj   +1 more source

Electrical‐Programming‐Free Neural Crossbars Enabled by Photochemical Weight Patterning

Advanced Functional Materials, EarlyView.
A flexible neural‐crossbar hardware system enabled by electrical‐programming‐free, mask‐defined, array‐parallel photochemical weight patterning is demonstrated. Trained weights are physically implemented across the array, supporting multilevel programming, bending‐stable operation and reconfiguration, substrate reuse, and low‐energy readout while ...
Hyo‐Bin Jang, Ji‐Hoon Choi, Juhyung Seo, Seungwoo Baek, Hocheon Yoo, Hea‐Lim Park   +5 more
wiley   +1 more source