Abstract
In this chapter, we present a novel and realistic channel modeling approach for visible light communications that overcomes the limitations of previous works. In our work, we consider wavelength dependency, effect of realistic light sources as well as different types of reflections such as specular and mixed cases of diffuse and specular. We use nonsequential ray tracing algorithms to calculate the detected power and path lengths from source to detector for each ray. These are then processed to yield the channel impulse responses for various indoor environments. We further present a channel characterization study where channel parameters such as channel DC gain, root mean square delay spread, coherence bandwidth, mean excess delay are calculated for different environments.
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Notes
- 1.
In [21], spectral reflectance of floor is given without additional information regarding the name and type of its material.
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This work was supported by TUBITAK research grant No. 113E307.
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Miramirkhani, F., Uysal, M., Panayirci, E. (2016). Channel Modeling for Visible Light Communications. In: Uysal, M., Capsoni, C., Ghassemlooy, Z., Boucouvalas, A., Udvary, E. (eds) Optical Wireless Communications. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-30201-0_6
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DOI: https://doi.org/10.1007/978-3-319-30201-0_6
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