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Analysis of Optical Wireless Systems based on Line Strip Multibeam Transmitters and Diversity Detection

Analysis of Optical Wireless Systems based on Line Strip Multibeam Transmitters and Diversity... Journal of Optical Communications7124 (2003) 2~Journal of1. Opt. Commun. 24 (2003) 2, 71-78Optical Communications© by Fachverlag Schiele & Schon 2003Analysis of Optical Wireless Systems based on Line StripMultibeam Transmitters and Diversity DetectionA. G. AL-Ghamdi and J. M. H. ElmirghaniSummaryThis paper presents and evaluates an original opticalwireless configuration that employs multibeam transmitters in conjunction with direction diversity receivers.Such a configuration overcomes the drawbacks and combines the advantages of both types of optical wirelesslinks including line-of-sight and diffuse links. The effectof this configuration on the optical end-to-end channelpropagation is investigated with due consideration to received power and delay spread. A multibeam transmitterplaced on the communication floor was used to producemultiple diffusing spots on the middle of the ceiling inthe form of a line strip. The signal power distributionwas analysed and the resultant SNR is shown to be betterthan that associated with a conventional diffuse system.Furthermore, using the line strip multibeam transmitter(LSMT) and with only three branches diversity, the proposed system gives about 23 dB SNR improvement overthe conventional diffuse system.1 IntroductionThe growing demand for high-speed wireless communication in an indoor environment has encouraged the useof optical wireless (OW) links as an information carrier[1]. The infrared spectrum is being considered due toits http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Optical Communications de Gruyter

Analysis of Optical Wireless Systems based on Line Strip Multibeam Transmitters and Diversity Detection

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Publisher
de Gruyter
Copyright
© 2012 by Walter de Gruyter GmbH & Co.
ISSN
2191-6322
eISSN
2191-6322
DOI
10.1515/joc.2003.24.2.71
Publisher site
See Article on Publisher Site

Abstract

Journal of Optical Communications7124 (2003) 2~Journal of1. Opt. Commun. 24 (2003) 2, 71-78Optical Communications© by Fachverlag Schiele & Schon 2003Analysis of Optical Wireless Systems based on Line StripMultibeam Transmitters and Diversity DetectionA. G. AL-Ghamdi and J. M. H. ElmirghaniSummaryThis paper presents and evaluates an original opticalwireless configuration that employs multibeam transmitters in conjunction with direction diversity receivers.Such a configuration overcomes the drawbacks and combines the advantages of both types of optical wirelesslinks including line-of-sight and diffuse links. The effectof this configuration on the optical end-to-end channelpropagation is investigated with due consideration to received power and delay spread. A multibeam transmitterplaced on the communication floor was used to producemultiple diffusing spots on the middle of the ceiling inthe form of a line strip. The signal power distributionwas analysed and the resultant SNR is shown to be betterthan that associated with a conventional diffuse system.Furthermore, using the line strip multibeam transmitter(LSMT) and with only three branches diversity, the proposed system gives about 23 dB SNR improvement overthe conventional diffuse system.1 IntroductionThe growing demand for high-speed wireless communication in an indoor environment has encouraged the useof optical wireless (OW) links as an information carrier[1]. The infrared spectrum is being considered due toits

Journal

Journal of Optical Communicationsde Gruyter

Published: Apr 1, 2003

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