Results 81 to 90 of about 2,996 (158)

Visible Light Communication vs. Optical Camera Communication: A Security Comparison Using the Risk Matrix Methodology

open access: yesPhotonics
Optical Wireless Communication (OWC) technologies are emerging as promising complements to radio-frequency systems, offering high bandwidth, spatial confinement, and license-free operation.
Ignacio Marin-Garcia   +3 more
doaj   +1 more source

A Novel Ranging Technique Based on Optical Camera Communications and Time Difference of Arrival

open access: yesApplied Sciences, 2019
In this work, a new Time Difference of Arrival (TDoA) scheme for distance measurement based on Optical Camera Communication (OCC) systems is proposed.
Jose Rabadan   +4 more
doaj   +1 more source

Minimal information for studies of extracellular vesicles (MISEV2023): From basic to advanced approaches

open access: yesJournal of Extracellular Vesicles, Volume 13, Issue 2, February 2024.
Abstract Extracellular vesicles (EVs), through their complex cargo, can reflect the state of their cell of origin and change the functions and phenotypes of other cells. These features indicate strong biomarker and therapeutic potential and have generated broad interest, as evidenced by the steady year‐on‐year increase in the numbers of scientific ...
Joshua A. Welsh   +1125 more
wiley   +1 more source

Video Object Segmentation Without Temporal Information

open access: yes, 2018
Video Object Segmentation, and video processing in general, has been historically dominated by methods that rely on the temporal consistency and redundancy in consecutive video frames.
Caelles, Sergi   +6 more
core   +2 more sources

Water-to-air unmanned aerial vehicle (UAV) based rolling shutter optical camera communication (OCC) system with gated recurrent unit neural network (GRU-NN)

open access: yesOptics Express
Underwater sensors and autonomous underwater vehicles (AUVs) are widely adopted in oceanic research activities. As the number of underwater sensors and AUVs is growing quickly, the bandwidth requirements are increasing accordingly. In this work, we put forward and demonstrate a large field-of-view (FOV) water-to-air unmanned aerial vehicle (UAV) based ...
Ming-Chieh Tsai   +2 more
openaire   +2 more sources

Effective approach navigation prior to small body deflection [PDF]

open access: yes, 2013
The largest threat for asteroids impacts on Earth is currently posed by small bodies of diameter less than 40 m. Even though incapable of causing a global catastrophe, they can still potentially cause significant local and regional damage.
Branco, Joao   +2 more
core  

Characterization of Exoplanet Atmospheres with the Optical Coronagraph on WFIRST [PDF]

open access: yes, 2019
WFIRST-CGI is a NASA technology demonstration mission that is charged with demonstrating key technologies for future exo-Earth imaging missions in space.
Burrows, Adam   +2 more
core   +2 more sources

2D-OFDM for Optical Camera Communication: Principle and Implementation

open access: yesIEEE Access, 2019
The orthogonal frequency division multiplexing (OFDM) waveform is a well-known implementation for light fidelity but quite a novel implementation for optical camera communication (OCC).
Trang Nguyen   +2 more
doaj   +1 more source

Color-Shift Keying for Optical Camera Communication Using a Rolling Shutter Mode

open access: yesIEEE Photonics Journal, 2019
An optical camera communication (OCC) is a special type of a visible light communication that uses a complementary metal-oxide semiconductor as a receiver. However, it is difficult to apply a high-order modulation scheme to such communications because of
Hao-Wei Chen   +6 more
doaj   +1 more source

SDR-Based All-Optical MIMO Wireless Hybrid IoT Sensor Networks

open access: yesIEEE Access
In this paper, we experimentally demonstrate and analyze the performance of a software-defined radio (SDR)-based all-optical multiple-input multiple-output (MIMO) wireless hybrid communication link for indoor Internet of Things (IoT) sensor networks.
Shivani Rajendra Teli   +3 more
doaj   +1 more source

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