Results 31 to 40 of about 3,855,517 (228)

OCC-ID: New Broadcasting Service-Based Cloud Model and Image Sensor Communications

International Journal of Distributed Sensor Networks, 2016
In recent decades, the main data traffic of mobile communication is based on the RF technology. Even though the efficiency from optimization for utilization or reuse is applied, there is a limitation of increased traffic demand of RF communication ...
Thithanhnhan Le, Nam-Tuan Le, Yeong Min Jang   +2 more
doaj   +1 more source

Data Rate Enhancement in Optical Camera Communications Using an Artificial Neural Network Equaliser

IEEE Access, 2020
In optical camera communication (OCC) systems leverage on the use of commercial off-the-shelf image sensors to perceive the spatial and temporal variation of light intensity to enable data transmission.
Othman Isam Younus, Navid Bani Hassan, Zabih Ghassemlooy, Paul Anthony Haigh, Stanislav Zvanovec, Luis Nero Alves, Hoa Le Minh   +6 more
doaj   +1 more source

Experimental Demonstration of Continuous Sensor Data Monitoring Using Neural Network-Based Optical Camera Communications

IEEE Photonics Journal, 2020
This technical paper presents an optical camera communication system by using data as input collected from a sensor that continuously garners humidity and temperature information from the environment.
Md. Faisal Ahmed, Moh. Khalid Hasan, Md. Shahjalal, Md. Morshed Alam, Yeong Min Jang   +4 more
doaj   +1 more source

Robust OCC System Optimized for Low-Frame-Rate Receivers

Sensors, 2022
Light emitting diodes (LED) are becoming the dominant lighting elements due to their efficiency. Optical camera communications (OCC), the branch of visible light communications (VLC) that uses video cameras as receivers, is a suitable candidate in ...
Robert-Alexandru Dobre, Radu-Ovidiu Preda, Radu-Alexandru Badea   +2 more
doaj   +1 more source

Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP) [PDF]

, 2007
Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas, Giggenbach, Dirk, Takayama, Yoshihisa, Horwath, Joachim, N. Perlot, Brechtelsbauer, Martin, Y. Takayama, Knapek, Markus, D. Giggenbach, Jono, Takashi, J. Horwath, M. Brechtelsbauer, T. Jono, M. Knapek   +13 more
core   +1 more source

VLC/OCC Hybrid Optical Wireless Systems for Versatile Indoor Applications

IEEE Access, 2019
In this paper, a hybrid scheme for optical wireless communications using LED lamps is proposed. This scheme allows both visible light communication (VLC) using photodetectors and optical camera communication (OCC) using image sensors of a camera to ...
Duy Thong Nguyen, Sangcheol Park, Yoonsung Chae, Youngil Park   +3 more
doaj   +1 more source

Optical Camera Communication as an Enabling Technology for Microalgae Cultivation

Sensors, 2021
Optical Camera Communication (OCC) systems have a potential application in microalgae production plants. In this work, a proof-of-concept prototype consisting of an artificial lighting photobioreactor is proposed.
Cristo Jurado-Verdu, Victor Guerra, Vicente Matus, Carlos Almeida, Jose Rabadan   +4 more
doaj   +1 more source

Dual Illumination Planar Doppler Velocimetry using a Single Camera [PDF]

, 2003
A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a single imaging camera instead of ...
Nobes, David S., Charrett, Thomas O. H., Tatam, Ralph P., Ford, Helen D., David S. Nobes, Helen D. Ford, Ralph P. Tatam, Tom O. H. Charrett   +7 more
core   +1 more source

Measurements of the Beam-Wave Fluctuations over a 142-km Atmospheric Path [PDF]

, 2006
An optical link has been established between the Canary Islands La Palma and Tenerife. A 1064-nm transmitting laser was located on La Palma whereas a BPSK communication receiver and measurement instruments were installed in ESA's OGS on Tenerife.
Perlot, Nicolas, K. Zettl, Knapek, Markus, Zettl, Karl, H. Henniger, Giggenbach, Dirk, D. Giggenbach, Henniger, Hennes, Horwath, Joachim, J. Horwath, N. Perlot, M. Knapek   +11 more
core   +1 more source

Optical Detection of Cellular Signals at Material Interfaces

Advanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren, Jitong Ren, Zixin Zhang, Koney Eungkon Kim, Francis L. Hong, Yuecheng Peter Zhou   +5 more
wiley   +1 more source