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Modeling and Equalization of Indoor Visible Light Channnels

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Modeling and Equalization of Indoor Visible Light Channnels.pdf (628.1Kb)
Date
2016
Author
Mamus, Atilla
Yeşilkaya, Anıl
Panayırcı, Erdal
Abstract
In this paper a computationally efficient method is proposed for modeling the indoor visible light communications (VLC) channels using a non-sequential ray tracing technique. We created three dimensional realistic simulation environment to depict indoor scenarios specifying the geometry of the indoor environment the objects inside the reflection characteristics of the surface materials as well as the characteristics of the transmitter and receiver. We then compute the received optical power and the delay of direct/indirect rays which are used to obtain the channel impulse response (CIR). Finally LMS (least mean squares) and RLS (recursive least squares) iterative channel equalization techniques which are wildly employed in traditional electrical wireless communications are tested at the receiver of the VLC system. Their convergence rates as well as impacts on the BER performances are investigated by determining the optimal control parameters of these algorithms. It is concluded that for the equalizer operating with its optimal parameters the BER performances of the VLC systems are very sensitivie to the field of view (FOV) values.

Source

2016 24th Signal Processing and Communication Application Conference (SIU)

Pages

1077-1080

URI

https://hdl.handle.net/20.500.12469/516
https://doi.org/10.1109/SIU.2016.7495930

Collections

  • Araştırma Çıktıları / WOS [1335]
  • Elektrik-Elektronik Mühendisliği / Electrical - Electronics Engineering [330]

Keywords

Visible Light Communication
Visible Light Channel Modeling
Iterative Channel Equalization
RLS
LMS

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DSpace software copyright © 2002-2015  DuraSpace
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Theme by 
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