title: RGB visible light communication using mobile-phone camera and multi-input multi-output.
abstract: 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.
authors.forename: Kevin
authors.initials: K
authors.lastname: Liang
authors.forename: Chi-Wai
authors.initials: CW
authors.lastname: Chow
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu