Results 41 to 50 of about 12,663 (309)

Room‐Temperature Skyrmionic Synapse in 2D Ferromagnet Fe3GaTe2 Operating via Collective Spin Texture Transformation

open access: yesAdvanced Materials, EarlyView.
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang   +20 more
wiley   +1 more source

Exploring Spatial Flexibility and Phase Design in Fluid Reconfigurable Intelligent Surfaces: A Physical Layer Security Perspective

open access: yesIEEE Open Journal of the Communications Society
This paper examines the secrecy outage probability (SOP) in Fluid Reconfigurable Intelligent Surfaces (FRIS) and contrasts their performance against two alternative RIS architectures: a traditional planar RIS and a compact RIS layout. To characterize the
Jose David Vega-Sanchez   +4 more
doaj   +1 more source

FACTORS AND REASONS THAT CAN MAKE USERS TO INCREASE THE USAGE OF SMARTPHONE SERVICES [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2013
The purpose of this paper is to identify and analyze factors that influence the users of the telecommunications smartphone services for increasing the usage of such services.
Roman Cristina Teodora   +3 more
doaj  

On the importance of using appropriate link-to-system interfaces for the study of link adaptation [PDF]

open access: yes, 2003
Link Adaptation is an adaptive radio link technique that selects a transport mode, from a set of predefined modes of varying robustness, depending on the channel quality conditions and dynamics.
Gozalvez, J., Dunlop, J.
core  

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

open access: yesAdvanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti   +11 more
wiley   +1 more source

RECENT MEETINGS ON ANTARCTIC TELECOMMUNICATIONS : A SUMMARY REPORT WITH DISCUSSIONS OF FUTURE PROBLEMS

open access: yesAntarctic Record, 1970
The commencement of the Antarctic Telecommunications by SCAR groups is briefly reviewed first, and the report of the Second Antarctic Treaty Meeting on Telecommunications, held at Buenos Aires in September 1969, is given.
Takeo KAWAHARA
doaj   +1 more source

A Study of LoRa: Long Range & Low Power Networks for the Internet of Things

open access: yesSensors, 2016
LoRa is a long-range, low-power, low-bitrate, wireless telecommunications system, promoted as an infrastructure solution for the Internet of Things: end-devices use LoRa across a single wireless hop to communicate to gateway(s), connected to the Internet
Aloÿs Augustin   +3 more
doaj   +1 more source

Link level modelling techniques for analysing the configuration of link adaptation algorithms in mobile radio networks [PDF]

open access: yes, 2004
The operation of Link Adaptation algorithms is based on channel quality estimates. It is therefore important to analyse the performance of such algorithms with link level models that properly capture the channel conditions and dynamics. Previous research
Gozalvez, J., Dunlop, J.
core  

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

DRLLA: Deep Reinforcement Learning for Link Adaptation

open access: yesTelecom, 2022
Link adaptation (LA) matches transmission parameters to conditions on the radio link, and therefore plays a major role in telecommunications. Improving LA is within the requirements for next-generation mobile telecommunication systems, and by refining ...
Florian Geiser   +6 more
doaj   +1 more source

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