Results 11 to 20 of about 4,066,800 (255)

Advances in Visible Light Communication

open access: yesPhotonics, 2023
Visible light communications (VLC) have been a highly popular area of research in recent years [...]
Cuiwei He, Wajahat Ali
doaj   +1 more source

Recent Advances in Indoor Localization via Visible Lights: A Survey

open access: yesSensors, 2020
Because of the limitations of the Global Positioning System (GPS) in indoor scenarios, various types of indoor positioning or localization technologies have been proposed and deployed.
A B M Mohaimenur Rahman   +2 more
doaj   +1 more source

Synthesis of visible-light-activated yellow amorphous TiO2 photocatalyst [PDF]

open access: yes, 2008
Visible-light-activated yellow amorphous TiO2 (yam-TiO2) was synthesised by a simple and organic-free precipitation method. TiN, an alternative precursor for TiO2 preparation, was dissolved in hydrogen peroxide under acidic condition ( pH similar to 1 ...
Randorn, Chamnan   +7 more
core   +1 more source

Smart receiver for visible light communications: Design and Analysis [PDF]

open access: yes, 2012
This paper presents the concept, design and analysis for a visible light communications receiver to guard against blocking and enhance mobility. Different geometrical shapes have been investigated, with two being chosen and analyzed in MATLAB for the ...
Haigh, P. A.   +14 more
core   +1 more source

High-Speed Indoor Navigation System based on Visible Light and Mobile Phone

open access: yesIEEE Photonics Journal, 2017
Visible light positioning (VLP) is widely believed to be a cost-effective answer to the growing demand for real-time indoor positioning. However, due to the high computational cost of image processing, most existing VLC-based systems fail to deliver ...
Junbin Fang   +7 more
doaj   +1 more source

Using Linear Interpolation to Reduce the Training Samples for Regression Based Visible Light Positioning System

open access: yesIEEE Photonics Journal, 2020
We put forward and experimentally demonstrate a second order machine-learning (ML) based visible-light-positioning (VLP) system using simple linear interpolation algorithm to reduce the training samples required in the ML algorithm.
Yu-Chun Wu   +8 more
doaj   +1 more source

Angle-of-Arrival (AOA) Visible Light Positioning (VLP) System Using Solar Cells With Third-Order Regression and Ridge Regression Algorithms

open access: yesIEEE Photonics Journal, 2020
We put forward and demonstrate a angle-of-arrival (AOA) based visible-light-positioning (VLP) system using quadrant-solar-cell (QSC) and third-order ridge regression machine learning (RRML) to improve the positioning accuracy.
Chong-You Hong   +9 more
doaj   +1 more source

Machine Learning Assisted Visible Light Sensing of the Rotation of a Robotic Arm

open access: yesIEEE Access, 2021
With the rise of LED (light-emitting diode)-based luminaires, artificial lighting has become a technology platform, which, besides providing illumination, also provides communication and positioning functionalities. Apart from this, most recently Visible
Kushal Madane   +4 more
doaj   +1 more source

Visible light. Part II: Photoprotection against visible and ultraviolet light

open access: yesJournal of the American Academy of Dermatology, 2021
Cutaneous photobiology studies have focused primarily on the ultraviolet portion of the solar spectrum. Visible light (VL), which comprises 50% of the electromagnetic radiation that reaches the Earth's surface and, as discussed in Part I of this CME, has cutaneous biologic effects, such as pigment darkening and erythema.
Amaris N, Geisler   +5 more
openaire   +3 more sources

Simultaneous transmission of audio and video signals using visible light communications [PDF]

open access: yes, 2013
A visible light communication system for parallel transmission of high-quality audio and video signals using illumination white and red light-emitting diodes (LEDs) is presented in this paper. For video transmission, we adopts the pulse width modulation (
Son, Do   +13 more
core   +2 more sources

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