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- W4285105278 abstract "Color shift keying (CSK) communicates information by emitting light that hops instantaneously from one chromaticity to another. This rapid hopping is too fast to be noticeable by human vision, which senses only the time-averaged color, as the human vision’s <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>critical fusion threshold</i> and <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>critical color fusion threshold</i> both lie under 100 Hz. That is, color shift keying exploits the human vision’s temporal <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>ir</i> resolution of instantaneous fluctuations across <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>chromaticities</i> . Left unexploited, up to now, is the <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>intensity</i> -fluctuation tolerance of the human vision, that humans do not perceive small intensity fluctuations of <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$pm 4%$</tex-math></inline-formula> . This newly proposed constellation-design scheme can raise by <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$49 %$</tex-math></inline-formula> the designed color-shift-keying constellation’s <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$d_{min }^circ$</tex-math></inline-formula> (i.e. the maximally achievable “minimum distance” <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$d_{min }$</tex-math></inline-formula> ). Moreover, this enhanced <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$d_{min }^circ$</tex-math></inline-formula> can be approximated as a simple mathematical expression in terms of the design parameters to serve as a rule-of-thumb to enhance color-shift-keying systems." @default.
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- W4285105278 date "2022-08-01" @default.
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- W4285105278 title "Optical Wireless Communications That Exploits the Human Vision’s Tolerance of Light Fluctuations in Intensity and Chromaticity" @default.
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- W4285105278 doi "https://doi.org/10.1109/jphot.2022.3180843" @default.
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