Results 71 to 80 of about 2,131,184 (147)

Selector for the Spectrum Award 2018

, 2018
Billingham was invited to be part of the selection panel for the first Spectrum Award in 2018 alongside Mark Wallinger, Charming Baker, Professor Simon Baron-Cohen, Sacha Craddock and Mary Simpson.
Billingham, Richard, Spectrum
core   +3 more sources

Low-Latency, Low-Complexity Digital Demodulator for Chirp Spread-Spectrum Packet Synchronization

A low-latency, low-complexity digital demodulator is presented for chirp spread spectrum (CSS)-modulated RF packets targeting low-power IoT wireless systems operating in spectrally congested environments.
Jun-Pyo Hong, Jaeho T. Im, Kyeongjun Ko, Joon-Seok Kim, Seung-Chan Lim   +4 more
core   +1 more source

Enhancing passive UHF RFID backscatter energy using chirp spread spectrum signals and channel shortening

, 2016
Performance of passive ultrahigh frequency radio-frequency identification (UHF RFID) systems depends on the energy level of the backscattered signal from the RF tag to the RFID reader.
Ben-Jabeur, Taoufik, Khalifa Abdulla Hazaa, Taoufik Ben-Jabeur, Hazaa, Khalifa Abdulla, Abdullah Kadri, Kadri, Abdullah   +5 more
core   +1 more source

Differential Chirp Spread Spectrum to perform Acoustic Long Range Underwater Localization and Communication

, 2021
International audienceDriven by the huge demand to explore natural resources, conducting ocean research, and warning from natural disasters, underwater acoustic communications have become a fast-growing field in the last decades.
Ferre, Guillaume, Ben Temim, Mohamed Amine, Rezzouki, Marwane   +2 more
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Performance evaluation of chirp spread spectrum system and Land Mobile Satellite System by computer simulation

, 1988
The work presented in this dissertation examines the performance of two satellite radio communication systems by computer simulation. Two simulations were separately performed for a spread spectrum chirp system as an analog communications system, and for
Kim, Junghwan
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A CSS kísérleti lehetőségei

, 2022
A növekvő online jelenlét hozadéka az egyre nagyobb igény a weboldalak kinézetének testreszabására. Erre a célra manapság a CSS-t használjuk. A nyelvet a World Wide Web Consortium (W3C) egy munkacsoportja fejleszti.
Kusmiczki, Balázs
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Comparative Analysis Spread Spectrum and Parity Coding Steganography in E-commerce [PDF]

The transaction data online has increased compared to the previous communications that mostly in the form of voice and text messaging. To improve the security, data must be protected such a way that it cannot be attacked by unauthorized parties.
Brahim , W, Zen , S Hadi, Mike , Yuliana, Fatchul , Bari H.   +3 more
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Improved chirp modulation spread spectrum receiver based on fractional fourier transform for multiple access

, 2009
The fractional Fourier transform (FRFT) is one among the most efficient techniques for digital signal processing of linear frequency modulated (LFM) signal applications. Chirp (or LFM) modulation spread spectrum (CMSS) with FRFT technique is employed for
Mahesh, H.M., B.N. Jagadale, Bhat, J.S., Lakshminarayana, H.K., Jagadale, B.N., H.M. Mahesh, H.K. Lakshminarayana, J.S. Bhat   +7 more
core   +1 more source

Adapting Chirp Spread Spectrum Modulation Techniques for Visible Light Communication in Greenhouses [PDF]

As greenhouses and other forms of protected agriculture modernize their systems and adopt data-driven techniques in reaction to climate change, wireless agricultural sensing is rapidly becoming an emergent area of research.
Lin, Jack
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3D chirp sub-bottom imaging system: design and first 3D volume

, 2005
Chirp sub-bottom profilers are marine acoustic devices that use a known and repeatable source signature (1 – 24 kHz) to produce decimetre vertical resolution crosssections of the sub-seabed.
Henstock, Timothy J., White, Paul R., Bull, Jonathan M., Hogarth, Peter, Leighton, Timothy G., Gutowski, Martin, Dix, Justin K.   +6 more
core   +1 more source