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

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-c...

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Bibliographic Details
Published in2012 1st IEEE International Conference on Communications in China Workshops pp. 43 - 48
Main Authors Wu, D., Ghassemlooy, Z., Le Minh, H., Rajbhandari, S., Khalighi, M. A., Tang, X.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Bandwidth
Delay
LED
Light emitting diodes
Nonlinear optics
Optical receivers
Optical transmitters
optical wireless communication and root mean square (RMS) delay spread
Optimum Lambertian order
Wireless communication
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Summary: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.
ISBN:1467329967
9781467329965
DOI:10.1109/ICCCW.2012.6316472