Results 31 to 40 of about 25,963 (242)
Aerial Reconfigurable Intelligent Surface-Enabled URLLC UAV Systems
IEEE Access, 2021 In this paper, we propose an aerial reconfigurable intelligent surface (RIS) system to support the stringent constraints of ultra-reliable low latency communication (URLLC).
Yijiu Li +4 more
doaj +1 more source
Reconfigurable Intelligent Surface-Assisted Space Shift Keying [PDF]
IEEE Wireless Communications Letters, 2020 The concept of reconfigurable intelligent surface (RIS)-assisted transmission, where phases of reflected signals are adjusted in an effective arrangement, has been recently put forward as a promising solution for 6G and beyond networks. Considering this and the undeniable potential of index modulation (IM) techniques, an RIS-based space shift keying ...
Ayse E. Canbilen +2 more
openaire +5 more sources
Reconfigurable Intelligent Surfaces: Channel Characterization and Modeling
Proceedings of the IEEE, 2022 Reconfigurable intelligent surfaces (RISs) are two dimensional (2D) metasurfaces which can intelligently manipulate electromagnetic waves by low-cost near passive reflecting elements. RIS is viewed as a potential key technology for the sixth generation (6G) wireless communication systems mainly due to its advantages in tuning wireless signals, thus ...
Jie Huang +7 more
openaire +2 more sources
Survey on reconfigurable intelligent surfaces below 10 GHz
EURASIP Journal on Wireless Communications and Networking, 2021 Reconfigurable intelligent surface (RIS) is a programmable structure that can be used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the surface.
Visa Tapio +4 more
doaj +1 more source
Reconfigurable Intelligent Surface Optimal Placement in Millimeter-Wave Networks
IEEE Open Journal of the Communications Society, 2021 This work discusses the optimal reconfigurable intelligent surface placement in highly-directional millimeter wave links. In particular, we present a novel system model that takes into account the relationship between the transmission beam footprint at ...
Konstantinos Ntontin +5 more
doaj +1 more source
Active Reconfigurable Intelligent Surface-Aided Wireless Communications
IEEE Transactions on Wireless Communications, 2021 Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in the RIS-aided link, a large number of passive reflecting elements (REs) are conventionally deployed at the RIS, resulting in large surface size and considerable circuit power ...
Ruizhe Long +3 more
openaire +4 more sources
Over-the-air beamforming with reconfigurable intelligent surfaces
Frontiers in Communications and Networks, 2022 Reconfigurable intelligent surface (RIS)-empowered communication is a revolutionary technology that enables to manipulate wireless propagation environment via smartly controllable low-cost reflecting surfaces. However, in order to outperform conventional communication systems, an RIS-aided system with solely passive reflection requires an extremely ...
Zehra Yigit +2 more
openaire +4 more sources
A new meta-module for efficient reconfiguration of hinged-units modular robots [PDF]
, 2016 We present a robust and compact meta-module for edge-hinged modular robot units such as M-TRAN, SuperBot, SMORES, UBot, PolyBot and CKBot, as well as for central-point-hinged ones such as Molecubes and Roombots.
Parada, Irene +2 more
core +1 more source
Wireless Energy Harvesting for Autonomous Reconfigurable Intelligent Surfaces
IEEE Transactions on Green Communications and Networking, 2023 This work was supported by the Luxembourg National Research Fund (FNR) under the CORE project RISOTTI (ref. 14773976), the European Commission’s Horizon 2020 research and innovation programme (ARIADNE) under grant agreement No. 871464, and the Digital Futures center.
Konstantinos Ntontin +9 more
openaire +4 more sources
Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions [PDF]
, 2019 Electromagnetic metasurfaces can be characterized as intelligent if they are able to perform multiple tunable functions, with the desired response being controlled by a computer influencing the individual electromagnetic properties of each metasurface ...
Kafesaki, Maria +9 more
core +4 more sources