Results 51 to 60 of about 241,679 (299)

Analytical and simulation tools for optical camera communications

Computer Communications, 2020
The use of LED-to-camera communication opens the door to a wide range of use cases and applications, with diverse requirements in terms of quality of service. However, while analytical models and simulation tools exist for all the major radio communication technologies, the only way of currently evaluating the performance of a network mechanism over ...
Duque, Alexis, Stanica, Razvan, Rivano, Hervé, Desportes, Adrien   +3 more
openaire   +3 more sources

Fighting against fast speckle decorrelation for light focusing inside live tissue by photon frequency shifting [PDF]

, 2020
Light focusing inside live tissue by digital optical phase conjugation (DOPC) has drawn increasing interest due to its potential biomedical applications in optogenetics, microsurgery, phototherapy, and deep-tissue imaging.
Cheng, Zhongtao, Li, Jingwei, Li, Lei, Liu, Yan, Wang, Lihong V., Yang, Jiamiao   +5 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

Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics [PDF]

, 2017
open5openGIANLUCA RUFFATO, 1; FILIPPO ROMANATO, ; 1Department of Physics and Astronomy ‘G. Galilei’, University of Padova; 2Laboratory for Nanofabrication of Nanodevices, c.so Stati Uniti 4GIANLUCA RUFFATO, 1; Romanato, Filippo; Ruffato, Gianluca ...

core   +1 more source

Motion-Aware Optical Camera Communication With Event Cameras

IEEE Robotics and Automation Letters
As the ubiquity of smart mobile devices continues to rise, Optical Camera Communication systems have gained more attention as a solution for efficient and private data streaming. This system utilizes optical cameras to receive data from digital screens via visible light. Despite their promise, most of them are hindered by dynamic factors such as screen
Hang Su, Ling Gao, Tao Liu, Laurent Kneip   +3 more
openaire   +2 more sources

MIMO Architecture for Optical Camera Communications

The Journal of Korean Institute of Communications and Information Sciences, 2017
Compare with other communication system based RF technology, Optical Camera Communication (OCC) has limitation on data rate due to the low frame rate of camera. The limitation on data rate can be solved with multiple-input and multiple-output (MIMO) technology; and it is the final target of all researches on OCC.
Nam-Tuan Le, Yeong Min Jang
openaire   +2 more sources

Asynchronous Scheme for Optical Camera Communication-Based Infrastructure-to-Vehicle Communication [PDF]

International Journal of Distributed Sensor Networks, 2015
This paper introduces infrastructure-to-vehicle (I2V) communication based on asynchronous optical camera communication (OCC), the transmitter of which can be an LED traffic light or electronic display, with the receiver being the existing front vehicle camera. In asynchronous OCC-based I2V communication, the key technique is an asynchronous scheme. An
Trang Nguyen, Nam Tuan Le, Yeong Min Jang   +2 more
openaire   +3 more sources

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

xLED: Covert Data Exfiltration from Air-Gapped Networks via Router LEDs

, 2017
In this paper we show how attackers can covertly leak data (e.g., encryption keys, passwords and files) from highly secure or air-gapped networks via the row of status LEDs that exists in networking equipment such as LAN switches and routers. Although it
Daidakulov, Andrey, Elovici, Yuval, Guri, Mordechai, Zadov, Boris   +3 more
core   +1 more source

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source