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Pre-equalization versus post-equalization of the VLC LEDs
Author(s): J. Siuzdak; G. Stepniak
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Paper Abstract

In the paper, there are reviewed pre-correction and pre-equalization schemes used for the correction of VLC LEDs frequency response/nonlinearity. Moreover, a theoretical analysis of pre- and post-equalization schemes efficiency was performed for a generic linear channel. It turned out that the most effective in terms of the receiver SNR is a distributed scheme when the equalization is performed at both the transmitter and receiver. The SNR gain of the distributed scheme may exceed 2 dB as compared to either pre- or post- equalization. The obtained generic results well apply to the VLC LED case.

Paper Details

Date Published: 6 November 2019
PDF: 8 pages
Proc. SPIE 11176, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, 1117604 (6 November 2019); doi: 10.1117/12.2534747
Show Author Affiliations
J. Siuzdak, Warsaw Univ. of Technology (Poland)
G. Stepniak, Warsaw Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 11176:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019
Ryszard S. Romaniuk; Maciej Linczuk, Editor(s)

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