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Proceedings Paper

A new encoding scheme for visible light communications with applications to mobile connections
Author(s): David M. Benton; Paul St. John Brittan
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Paper Abstract

A new, novel and unconventional encoding scheme called concurrent coding, has recently been demonstrated and shown to offer interesting features and benefits in comparison to conventional techniques, such as robustness against burst errors and improved efficiency of transmitted power. Free space optical communications can suffer particularly from issues of alignment which requires stable, fixed links to be established and beam wander which can interrupt communications. Concurrent coding has the potential to help ease these difficulties and enable mobile, flexible optical communications to be implemented through the use of a source encoding technique. This concept has been applied for the first time to optical communications where standard light emitting diodes (LEDs) have been used to transmit information encoded with concurrent coding. The technique successfully transmits and decodes data despite unpredictable interruptions to the transmission causing significant drop-outs to the detected signal. The technique also shows how it is possible to send a single block of data in isolation with no pre-synchronisation required between transmitter and receiver, and no specific synchronisation sequence appended to the transmission. Such systems are robust against interference -- intentional or otherwise -- as well as intermittent beam blockage.

Paper Details

Date Published: 6 October 2017
PDF: 10 pages
Proc. SPIE 10437, Advanced Free-Space Optical Communication Techniques and Applications III, 104370C (6 October 2017);
Show Author Affiliations
David M. Benton, Aston Univ. (United Kingdom)
Paul St. John Brittan, Northrop Grumman Corp. UK (United Kingdom)

Published in SPIE Proceedings Vol. 10437:
Advanced Free-Space Optical Communication Techniques and Applications III
Henry J. White; Florian Moll, Editor(s)

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