Zero reduction codes for efficient transmission and enhanced brightness in visible light communication

In this study, the authors propose novel zero reduction codes to simultaneously provide effective illumination and communication services in visible light communications (VLC). In general, the brightness of light-emitting diode illuminations can be enhanced by increasing the duty cycle ratio (DCR) b...

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Veröffentlicht in:IET optoelectronics Jg. 11; H. 3; S. 108 - 113
Hauptverfasser: Kim, Kyuntak, Lee, Kyujin, Lee, Kyesan
Format: Journal Article
Sprache:Englisch
Veröffentlicht: The Institution of Engineering and Technology 01.06.2017
Schlagworte:
BER
bit error rate
brightness
codes
communication services
decision boundary
decision interference
duty cycle ratio
error statistics
free‐space optical communication
light emitting diodes
light‐emitting diode illuminations
Research Article
visible light communication
zero reduction codes
codes
duty cycle ratio
zero reduction codes
light-emitting diode illuminations
decision interference
bit error rate
decision boundary
visible light communication
light emitting diodes
BER
brightness
free-space optical communication
communication services
error statistics
ISSN:1751-8768, 1751-8776
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Zusammenfassung:In this study, the authors propose novel zero reduction codes to simultaneously provide effective illumination and communication services in visible light communications (VLC). In general, the brightness of light-emitting diode illuminations can be enhanced by increasing the duty cycle ratio (DCR) but in such cases, the bit error rate (BER) performance is significantly degraded in the VLC systems. This is because the decision interference of received 0 and 1 bits is increased owing to the decision boundary overlapped. The proposed coding scheme can improve the brightness without increasing DCR and also achieve the enhanced BER performance compared to the conventional modulation schemes such as variable pulse-position modulation or variable on–off keying. The simulations results demonstrate that the proposed coding scheme provides the superior brightness and BER performances.
ISSN:1751-8768
1751-8776
DOI:10.1049/iet-opt.2016.0042