Abstract
Color-shift keying (CSK) is a type of visible light wireless communication, where a visible color is preset and is to appear constant during the human vision's 'critical flicker fusion threshold' and 'critical color fusion threshold.' This paper is first in the open literature to systematically investigate how CSK's largest achievable 'minimum distance' (dmin) would vary with the preset chromaticity and with the constellation size (M). This paper discovers this elegant approximation: The best dmin≈1.921-0.5985-2.736-0.645(x2+ y2)0.7802(2-0.436, where (x, y) refers to the preset chromaticity's displacement (in a two-dimensional space) from the case of all LEDs emitting with an equal intensity.
Original language | English |
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Article number | 7898486 |
Pages (from-to) | 2724-2733 |
Number of pages | 10 |
Journal | Journal of Lightwave Technology |
Volume | 35 |
Issue number | 13 |
DOIs | |
Publication status | Published - 1 Jul 2017 |
Keywords
- Colorimetry
- intensity modulation
- light emitting diodes
- optical communication
- visible light communication
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics