Indoor Channel Characteristics for Visible Light Communications

Author

Lee, Kwonhyung ; Park, Hyuncheol ; Barry, John R.

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

Volume

15

Issue

2

fYear

2011

fDate

2/1/2011 12:00:00 AM

Firstpage

217

Lastpage

219

Abstract

In this letter, we present indoor multipath dispersion characteristics for visible light communications (VLC). Since the VLC uses a wide spectrum between 380 nm and 780 nm, the conventional narrowband model for infrared may not apply. We generalize the Barry´s model by including wavelength-dependent white LED characteristics and spectral reflectance of indoor reflectors. We perform a computer simulation to compare the power delay profile of the VLC with that of infrared communications. From our studies, we show that the VLC provides a larger transmission bandwidth than infrared communications.

Keywords

light emitting diodes; optical communication; optical elements; reflectivity; wireless channels; Barry model; indoor channel characteristic; indoor reflector; infrared communication; multipath dispersion; narrowband model; power delay profile; spectral reflectance; transmission bandwidth; visible light communication; wavelength-dependent white LED characteristic; LED-lighting; Optical wireless communications; and spectral reflectance; visible light communications;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.010411.101945

Filename

5682214