Results 21 to 30 of about 3,855,517 (228)

Multi-Spot Tracking System for Free-Space Optical Communication [PDF]

open access: yesRadioengineering, 2022
This article describes a multi-spot tracking system for free space optic communications systems suitable for tracking optical terminals observed within the field-of-view of a wide angle telescope.
P. Skryja, J. Poliak, O. Wilfert
doaj  

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

open access: yes, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

Region-of-Interest Signaling Vehicular System Using Optical Camera Communications

open access: yesIEEE Photonics Journal, 2017
This technical paper introduces an optical camera communication system for vehicles. The purpose of the communication system incorporated into car (using existing light-emitting diode (LED) lights and ordinary cameras) is to add region-of-interest ...
Trang Nguyen   +2 more
doaj   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

open access: yes, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus   +9 more
core   +1 more source

Experimental DCO-OFDM Optical Camera Communication Systems With a Commercial Smartphone Camera

open access: yesIEEE Photonics Journal, 2019
Modern handheld mobile devices are equipped with a complementary metal-oxide-semiconductor (CMOS) image sensor. These image sensors are capable of perceiving intensity changes in optically modulated signals, driving the rapid development of optical ...
Jenn-Kaie Lain   +2 more
doaj   +1 more source

Performance of Vehicular Visible Light Communications under the Effects of Atmospheric Turbulence with Aperture Averaging

open access: yesSensors, 2021
In this paper, we investigate the performance of a vehicular visible light communications (VVLC) link with a non-collimated and incoherent light source (a light-emitting diode) as the transmitter (Tx), and two different optical receiver (Rx) types (a ...
Elizabeth Eso   +5 more
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

open access: yes, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll   +13 more
core   +1 more source

Analysis and Experiment of Wireless Optical Communications in Applications Dedicated to Mobile Devices with Applicability in the Field of Road and Pedestrian Safety

open access: yesSensors, 2022
Current developments and the need for high-performance devices that provide safe and reliable communications present a future perspective by using visible light as an alternative solution that can substantially improve road and pedestrian safety.
Eduard Zadobrischi
doaj   +1 more source

Characterization and Performance of a Thermal Camera Communication System

open access: yesSensors, 2020
This work presents a novel communications technology named Thermal Camera Communication (TCC), which is analogous to Optical Camera Communication (OCC).
Victor Guerra   +3 more
doaj   +1 more source

Evaluation of Fog Effects on Optical Camera Communications Link

open access: yes, 2020
The applications of Optical Camera Communications (OCC) have been tested for vehicular communications, Internet-of-things (IoT), and other outdoor scenarios due to the vast availability of standard camera equipment.
Cristo Jurado-Verdu   +11 more
core   +1 more source

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