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

Kevin Liang, Chi-Wai Chow, Yang Liu

Research output: Contribution to journalArticle

49 Scopus citations


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 interchannel 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.

Original languageEnglish
Pages (from-to)9383-9388
Number of pages6
JournalOptics Express
Issue number9
StatePublished - 2 May 2016

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