Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/41524
Title: Constellation design for color space-based modulation in visible light communications
Authors: Campos-Delgado, D. U.
Luna-Rivera, J. M.
Perez-Jimenez, R. 
Gutierrez, C. A.
Guerra, V. 
Rabadan, J. 
UNESCO Clasification: 33 Ciencias tecnológicas
3325 Tecnología de las telecomunicaciones
Keywords: VLC
Modulation
CSK
IEEE 802.15.7
Issue Date: 2018
Journal: Physical Communication 
Abstract: In this paper, we present a new strategy to design the constellation symbols in a visible light communication (VLC) system by considering multiple LED transmitters at different wavelengths. For this purpose, the LED transmitters are modeled as fixed points in a color space, and the constellation symbols are obtained by convex combinations of these points. In our formulation, the resulting constellation symbols have to reproduce on average a desired white tonality. Hence, the constellation design strategy is defined as a constrained optimization problem that seeks to maximize the minimum distance among the resulting symbols, but at the same time, to yield a desired white tonality on average. For evaluation purposes, we consider the CIE 1931 color space with 3 and 5 LED transmitters, and constellations with 4, 8 and 16 symbols. Our proposed methodology is compared with a previous work in the state of the art, where an important improvement is achieved with respect to the resulting Euclidean distance among constellation symbols.
URI: http://hdl.handle.net/10553/41524
ISSN: 1874-4907
DOI: 10.1016/j.phycom.2018.04.010
Source: Physical Communication[ISSN 1874-4907],v. 31, p. 154-159
Appears in Collections:Artículos
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