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Optical Engineering

Decoding mobile-phone image sensor rolling shutter effect for visible light communications
Author(s): Yang Liu
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Paper Abstract

Optical wireless communication (OWC) using visible lights, also known as visible light communication (VLC), has attracted significant attention recently. As the traditional OWC and VLC receivers (Rxs) are based on PIN photo-diode or avalanche photo-diode, deploying the complementary metal-oxide-semiconductor (CMOS) image sensor as the VLC Rx is attractive since nowadays nearly every person has a smart phone with embedded CMOS image sensor. However, deploying the CMOS image sensor as the VLC Rx is challenging. In this work, we propose and demonstrate two simple contrast ratio (CR) enhancement schemes to improve the contrast of the rolling shutter pattern. Then we describe their processing algorithms one by one. The experimental results show that both the proposed CR enhancement schemes can significantly mitigate the high-intensity fluctuations of the rolling shutter pattern and improve the bit-error-rate performance.

Paper Details

Date Published: 26 January 2016
PDF: 6 pages
Opt. Eng. 55(1) 016103 doi: 10.1117/1.OE.55.1.016103
Published in: Optical Engineering Volume 55, Issue 1
Show Author Affiliations
Yang Liu, Philips Mobile Display Systems (Hong Kong, China)

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