Improvement of the Transmission Bandwidth for Indoor Optical Wireless Communication Systems Using a Diffused Gaussian Beam

Wu, Dehao, Ghassemlooy, Zabih, Le Minh, Hoa, Rajbhandari, Sujan and Boucouvalas, Anthony (2012) Improvement of the Transmission Bandwidth for Indoor Optical Wireless Communication Systems Using a Diffused Gaussian Beam. IEEE Communications Letters, 16 (8). pp. 1316-1319. ISSN 1089-7798

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Official URL: http://dx.doi.org/10.1109/LCOMM.2012.060812.120803

Abstract

The multipath dispersion in a non-directed line-of-sight (LOS) indoor optical wireless communications (OWC) channel limits the transmission bandwidth. In this study, we improve the transmission bandwidth by employing a TEM_{00} mode laser beam and an alignment-free light shaping diffuser (LSD). We derive a new expression for the radiation field distribution of the diffused Gaussian beam (DGB) and its multipath impulse response. The transmission bandwidth is determined based on the numerical simulation of the root mean square (RMS) delay spread in a room. Results show that indoor OWC systems employing DGB offers significantly higher transmission bandwidth compared to the Lambertian beam (LB) for a wide divergence angle.

Item Type: Article
Uncontrolled Keywords: optical wireless communications, diffused Gaussian beam, multipath dispersion and RMS delay spread
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sarah Howells
Date Deposited: 17 Sep 2012 11:23
Last Modified: 10 Aug 2015 11:16
URI: http://nrl.northumbria.ac.uk/id/eprint/8924

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