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White LED diodes are increasingly used. Thanks their features they are also used for illumination and gradually replace the classical light bulbs and fluorescent tubes. The one of advantages of white LED diodes is their availability for the Visible Light Communication. This article deals with study of suitable placing of light sources for indoor. The aim is a uniform light distribution and thereby...
The communication properties of the white Light Emitting Diodes (LED) above all depend on a phosphor decay. This article describes the measurement of rise and fall times of white light created by the blue LED and the YAG:Ce phosphors. Measured rise and fall times are compared to rise and fall time of the blue LED. We tested four kinds of phosphors which are able to create a white light. The phosphors...
In this paper, basic information about use of the RGBY (Red Green Blue Yellow) model for mobile visible light communication systems is presented. This document contains information about differences between the traditional RGB model and the RGBY model with respect to the area coverage and white light creation, since the adding of the yellow significantly affects system properties in many ways. There...
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