NDLI: Visible light communication using mobile-phone camera with data rate higher than frame rate.

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Visible light communication using mobile-phone camera with data rate higher than frame rate.

Content Provider	Semantic Scholar
Author	Chow, Chi-Wai Chen, Chung-Yen Chen, Shih-Hao
Copyright Year	2015
Abstract	Complementary Metal-Oxide-Semiconductor (CMOS) image sensors are widely used in mobile-phone and cameras. Hence, it is attractive if these image sensors can be used as the visible light communication (VLC) receivers (Rxs). However, using these CMOS image sensors are challenging. In this work, we propose and demonstrate a VLC link using mobile-phone camera with data rate higher than frame rate of the CMOS image sensor. We first discuss and analyze the features of using CMOS image sensor as VLC Rx, including the rolling shutter effect, overlapping of exposure time of each row of pixels, frame-to-frame processing time gap, and also the image sensor "blooming" effect. Then, we describe the procedure of synchronization and demodulation. This includes file format conversion, grayscale conversion, column matrix selection avoiding blooming, polynomial fitting for threshold location. Finally, the evaluation of bit-error-rate (BER) is performed satisfying the forward error correction (FEC) limit.
File Format	PDF HTM / HTML
DOI	10.1364/OE.23.026080
PubMed reference number	26480122
Journal	Medline
Volume Number	23
Issue Number	20
Alternate Webpage(s)	https://ir.nctu.edu.tw/bitstream/11536/129416/1/765628b5788202ccc305f1e236f4ab7d.pdf
Alternate Webpage(s)	https://doi.org/10.1364/OE.23.026080
Journal	Optics express
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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