Author(s) :
Benisha. R. BG. Maria Kishoba
Article Name :
Visible Light Communication - A Review
Abstract :
The Visible light communication (VLC) is a novel topology that takes advantage of the large, unused visible light spectrum of 400-800THz. The VLC technique employs a non-radio frequency, which is converted and restricted from telecommunications licenses, to meet an urgent need. Flicker is a serious issue because light is modulated at such a high rate that it can harm the human eye. Dimming is also a problem in indoor environments, in which the amount of light has to be regulated according to the needs of the user. The rise time and non- linearity of LED also creates problem in modulation. Hence, to overcome these issues, many modulation techniques has been employed in VLC. In this paper, a survey is carried out regarding the various modulation techniques used in visible light communication, in order to find the optimal one.
No. of Downloads :
4