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RGB visible light communication using mobile-phone camera and multi-input multi-output

RGB visible light communication using mobile-phone camera and multi-input multi-output

Optics Express 24(9): 9383-9388

Red, green, blue (RGB) light-emitting-diodes (LEDs) are used to increase the visible light communication (VLC) transmission capacity via wavelength-division-multiplexing (WDM), and the color image sensor in mobile phone is used to separate different color signals via a color filter array. However, due to the wide optical bandwidths of the color filters, there is a high spectral overlap among different channels, and a high inter-channel interference (ICI) happens. Here, we propose and demonstrate an RGB VLC transmission using CMOS image sensor with multi-input multi-output (MIMO) technique to mitigate the ICI and retrieve the three independent color channels in the rolling shutter pattern. Data pattern extinction-ratio (ER) enhancement and thresholding are deployed.

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Accession: 058680889

Download citation: RISBibTeXText

PMID: 27137554

DOI: 10.1364/OE.24.009383

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