Lasers, Fiber Optics, and Communications

Decoding mobile-phone image sensor rolling shutter effect for visible light communications

[+] Author Affiliations
Yang Liu

Philips Electronics Ltd., Shatin, N.T., Hong Kong

Opt. Eng. 55(1), 016103 (Jan 26, 2016). doi:10.1117/1.OE.55.1.016103
History: Received November 30, 2015; Accepted December 28, 2015
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Yang Liu
"Decoding mobile-phone image sensor rolling shutter effect for visible light communications", Opt. Eng. 55(1), 016103 (Jan 26, 2016). ; http://dx.doi.org/10.1117/1.OE.55.1.016103


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