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Optimisation of Lambertian order for indoor non-directed optical wireless communication

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6 Author(s)
Wu, D. ; Opt. Commun. Res. Group, Northumbria Univ., Newcastle upon Tyne, UK ; Ghassemlooy, Z. ; Le Minh, H. ; Rajbhandari, S.
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This paper studies the optimised Lambertian order (OLO) of light-emitting diodes (LEDs) for an indoor non-directed line of sight optical wireless communication (NLOS-OWC) systems. We firstly derive an expression of the OLO from a conventional Lambertian LED model, Then, we analyse the indoor multi-cell NLOS-OWC channel characteristics including optical power distribution and multipath time dispersion for two cases of one-cell and four-cell configurations. Furthermore, we estimate the transmission bandwidth by simulating the channel frequency response. Numerical results show that, by using OLO a significant improvement of the transmission bandwidth can be achieved for in indoor NLOS-OWC systems, in particular, for multi-cell configurations.

Published in:

Communications in China Workshops (ICCC), 2012 1st IEEE International Conference on

Date of Conference:

15-17 Aug. 2012

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