Results 21 to 30 of about 109,599 (297)

Fasys: Visible-Light-Based Communication and Positioning Services towards Smart Cities

open access: yesSensors, 2023
Visible-light-based transmission application plays an important role in various types of sensor services for the Internet of Things (IoTs). However, in big data scenarios, current visible-light-based systems cannot achieve concurrent high-speed ...
Baozhu Yu   +4 more
doaj   +1 more source

Visible light communications: Challenges and possibilities

open access: yes2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
Solid-state lighting is a rapidly developing field. White-light and other visible LEDs are becoming more efficient, have high reliability and can be incorporated into many lighting applications. Recent examples include car head-lights based on white LEDs, and LED illumination as an architectural feature.
O'Brien, D   +6 more
openaire   +2 more sources

Zero power light labeling based on visible light communication

open access: yesDianxin kexue, 2023
In order to achieve zero energy consumption of visible light labels, MATLAB and MULTISIM were used to simulate the impedance matching of the receiver, matching the input impedance of the first-order equalization circuit with the internal resistance of ...
Tianyang MA, Xiongbin CHEN, Yiwu XU
doaj   +2 more sources

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

An Indoor Visible Light Positioning System for Multi-Cell Networks

open access: yesPhotonics, 2022
Indoor positioning systems based on visible light communication (VLC) using white light-emitting diodes (WLEDs) have been widely studied in the literature. In this paper, we present an indoor visible-light positioning (VLP) system based on red–green–blue
Roger Alexander Martínez-Ciro   +3 more
doaj   +1 more source

Wavelength-Multiplexed Polymer LEDs: Towards 55 Mb/s Organic Visible Light Communications [PDF]

open access: yes, 2015
We present recent progress on visible light communication systems using polymer light-emitting diodes as the transmitters and a commercial silicon photodetector as the receiver.
Papakonstantinou, I   +15 more
core   +1 more source

Efficient road surface detection using visible light communication [PDF]

open access: yes, 2015
This paper presents an efficient road surface detection technique based on visible light communication (VLC). It uses light emitting diodes (LED) based car headlamps to illuminate the road surface and capture the diffuse and specular reflections from the
Ghassemlooy, Zabih   +7 more
core   +1 more source

Visible-light communication using thermally evaporated CsPbBr3 perovskite thin films

open access: yes, 2023
Lead halide perovskites are widely used in optoelectronic applications owing to their promising photophysical properties, but developing components of the order of nanoscale remains challenging.
Mohammed, Zyad O. F.   +23 more
core   +1 more source

CALC: Calibration for Ambient Light Correction in Screen-to-Camera Visible Light Communication

open access: yesResults in Optics, 2021
Screen-to-Camera Visible Light Communication (S2C-VLC) offers an attractive alternative to other near-field communication methods. It provides direct communication between smartphones without infrastructure support and demand on radio frequency while ...
Kunyu Sun   +2 more
doaj   +1 more source

Mobile Phone Camera-Based Indoor Visible Light Communications With Rotation Compensation

open access: yesIEEE Photonics Journal, 2016
Downlink visible light communication (VLC) using a mobile phone camera is presented. The proposed scheme consists of an 8 $\times$ 8 light-emitting diode (LED) array for data transmission and eight white LEDs for an adequate level of illumination.
Willy Anugrah Cahyadi   +3 more
doaj   +1 more source

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