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Receiver alignment dependence of a GA controlled optical wireless transmitter
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Higgins, Matthew D., Green, Roger and Leeson, Mark S. (2009) Receiver alignment dependence of a GA controlled optical wireless transmitter. Journal of Optics A: Pure and Applied Optics, Vol.11 (No.7). Article: 075403. doi:10.1088/1464-4258/11/7/075403 ISSN 1464-4258.
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Official URL: http://dx.doi.org/10.1088/1464-4258/11/7/075403
Abstract
A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimizing the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems. By dynamically modifying the intensity of individual diffusion spots, the transmitter is capable of compensating for changes in receiver alignment, user movement and surface reflectivity characteristics, with negligible impact to bandwidth and RMS delay spread. The dynamic range, referenced against the peak received power, can be reduced by up to 27% when the room is empty, and up to 26% with user movement and variable receiver alignment. Furthermore, received power perturbation, induced by user movement, is reduced from 10% to 2.5%. This method shows potential for providing a highly adaptable solution of overcoming channel variability whilst also reducing receiver complexity.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QA Mathematics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Genetic algorithms, Optical communications, Wireless LANs | ||||
Journal or Publication Title: | Journal of Optics A: Pure and Applied Optics | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 1464-4258 | ||||
Official Date: | July 2009 | ||||
Dates: |
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Volume: | Vol.11 | ||||
Number: | No.7 | ||||
Number of Pages: | 9 | ||||
Page Range: | Article: 075403 | ||||
DOI: | 10.1088/1464-4258/11/7/075403 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 13 December 2015 | ||||
Date of first compliant Open Access: | 13 December 2015 |
Data sourced from Thomson Reuters' Web of Knowledge
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