Results 41 to 50 of about 21,946 (273)

Variability of Internally Generated Turbulence in an Estuary, from 100 Days of Continuous Observations [PDF]

open access: yes, 2009
We present detailed observations of internally generated turbulence in a sheared, stratified natural flow, as well as an analysis of the external factors leading to its generation and temporal variability.
Orton, P. M., Visbeck, Martin
core   +1 more source

Guest Editorial: Special Issue on Large-Scale Wireless-Powered Networks With Backscatter Communications

open access: yesIEEE Open Journal of the Communications Society, 2020
The Proliferation of connected and embedded devices has played a critical role in the development of next generation Internet of Things (IoT), and consequently, the diffusion of low power networks. The sustainability of such networks entails energy aware
Sami Muhaidat   +5 more
doaj   +1 more source

Symbol Detection of Ambient Backscatter Systems with Manchester Coding

open access: yes, 2018
Ambient backscatter communication is a newly emerged paradigm, which utilizes the ambient radio frequency (RF) signal as the carrier to reduce the system battery requirement, and is regarded as a promising solution for enabling large scale deployment of ...
Lin, Hai   +3 more
core   +1 more source

Polarization-Based Reconfigurable Tags for Robust Ambient Backscatter Communications

open access: yesIEEE Open Journal of the Communications Society, 2020
Ambient backscatter communication is an emerging and promising low-energy technology for the Internet of Things. In such a system, a tag sends a binary message to a reader by backscattering a radio frequency signal generated by an ambient source. The tag
R. Fara   +7 more
doaj   +1 more source

Noncoherent Backscatter Communications Over Ambient OFDM Signals

open access: yesIEEE Transactions on Communications, 2019
In recent years, ambient backscatter communications have gained a lot of interests as a promising enabling technology for the Internet-of-Things and green communications. In ambient backscatter communication systems, ultra-low power devices are able to transmit information by backscattering ambient radio-frequency signals generated by legacy ...
ElMossallamy, Mohamed A.   +6 more
openaire   +2 more sources

Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
Ambient backscatter communications is an emerging paradigm and a key enabler for pervasive connectivity of low-powered wireless devices. It is primarily beneficial in the Internet of things (IoT) and the situations where computing and connectivity ...
Furqan Jameel   +3 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

Intelligent interference cancellation and ambient backscatter signal extraction for wireless-powered UAV IoT network

open access: yesEURASIP Journal on Advances in Signal Processing
Unmanned aerial vehicles (UAVs) offer a new approach to wireless communication, leveraging their high mobility, flexibility, and visual communication capabilities.
Cheng Zhong, Di Zhai, Yang Lu, Ke Li
doaj   +1 more source

Time- and Power-Splitting Strategies for Ambient Backscatter System

open access: yesIEEE Access, 2019
An ambient backscatter system could utilize the exiting ambient RF signals as both energy source and information carrier to enable the communications among battery-free devices and is deemed as a promising communication primitive for the Internet of ...
Zhe Ma   +6 more
doaj   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

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