Improvement of Transmission Bandwidth for Indoor Optical Wireless Communication Systems Using an Elliptical Lambertian Beam

Author

Dehao Wu ; Ghassemlooy, Zabih ; Rajbhandari, Sujan ; Le Minh, Hoa ; Boucouvalas, A.C.

Author_Institution

Opt. Commun. Res. Group, Northumbria Univ., Newcastle upon Tyne, UK

Volume

25

Issue

2

fYear

2013

fDate

Jan.15, 2013

Firstpage

107

Lastpage

110

Abstract

In this letter, we propose a tuned elliptical Lambertian beam (ELB) model to achieve a higher transmission bandwidth than the conventional circular Lambertian beam (CLB) model for indoor optical wireless communication systems. ELB is generated by employing aM°×N° light shaping diffuser, and its power distribution is investigated. We first derive new expressions of the power distribution and the multipath impulse response for ELB. From the precise frequency responses of CLB and ELB sources, we show that the tuned ELB model offers a higher transmission bandwidth than CLB.

Keywords

frequency response; indoor radio; light scattering; optical links; transient response; CLB source; ELB source; circular Lambertian beam model; frequency responses; indoor optical wireless communication systems; light shaping diffuser; multipath impulse response; power distribution; transmission bandwidth; tuned elliptical Lambertian beam model; Bandwidth; Light emitting diodes; Nonlinear optics; Optical receivers; Optical transmitters; Wireless communication; Elliptical Lambertian beam; multipath dispersion and frequency response; optical wireless communication;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2227304

Filename

6353146