Search:
Computing and Library Services - delivering an inspiring information environment

Hub architecture for infra-red wireless networks in office environments

Bellon, Jacques A., Sibley, Martin J.N. and Greaves, S.D. (1999) Hub architecture for infra-red wireless networks in office environments. IEE Proceedings - Optoelectronics, 146 (2). pp. 78-82. ISSN 1350-2433

Metadata only available from this repository.

Abstract

The paper describes a LOS system architecture that allows for a data rate of 155 Mbit/s on both down- and up-links. To achieve this, arrays of vertical cavity surface emitting lasers (VCSELs) are used that emit light of 850 nm and have an output power that is within eye-safety limits. Original theory is presented that permits calculation of the coverage area for a certain launch power and receiver sensitivity. Design equations are presented for the selection of the beam shaping/spreading lens placed in front of the laser arrays. Original results from an experimental testbed compare favorably with theoretical predictions. It is concluded that an 8×8 laser array will cover an area of 1 m by 1 m. The addition of a tracking system would permit multiuser operation with each individual user having access to the full bandwidth of the link

Item Type: Article
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Schools: School of Computing and Engineering
School of Computing and Engineering > Systems Engineering Research Group
Related URLs:
Depositing User: Briony Heyhoe
Date Deposited: 04 Dec 2008 14:56
Last Modified: 03 Mar 2010 09:08
URI: http://eprints.hud.ac.uk/id/eprint/2842

Item control for Repository Staff only:

View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©