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- W2037226495 abstract "Visible light communication (VLC) is achieved by modulation of one or more spectral components in the visible spectrum (≈380–780 um). The use of this range provides an opportunity to exploit an otherwise untapped medium that is used in human lighting. Most VLC systems constructed to date focus on using a broad visible band generated by phosphor-converted light emitting diodes, or by filtering to isolate the blue component from these sources. Multi-wavelength systems consider additional wavelength bands that are combined to produce the desired communications capacity and lighting output. This color combining, or mixing, realizes desired color temperature and intensity and represents a form of wavelength-division multiplexing. This paper investigates the relationships between the colors comprising the lighting source for a range of lighting states, the spectral separation of communication channels, the relative intensities required to realize lighting states, how modulation can be most effectively mapped to the available color channels, and the design of an optical filtering approach to maximize signal to noise ratio while minimizing crosstalk at the receiver. Simulation results based on a three colored VLC system are discussed using orthogonal frequency division multiplexing for each color. It is shown that the system is the most power efficient at 6250 K correlated color temperature, with transmitter spectral spread of 5 nm and filter transmittance width of 40 nm." @default.
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- W2037226495 date "2014-12-01" @default.
- W2037226495 modified "2023-10-16" @default.
- W2037226495 title "Multi-wavelength visible light communication system design" @default.
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- W2037226495 doi "https://doi.org/10.1109/glocomw.2014.7063486" @default.
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