Toeplitz concatenated matrix aided ICA algorithm for super-Nyquist multiband CAP VLC systems

In this paper, we demonstrate a Toeplitz concatenated matrix aided independent component analysis (TCM-ICA) equalizer that can skillfully compensate for the inter-channel interference (ICI) of super-Nyquist multiband carrierless amplitude and phase modulation ( m -CAP) system. In the point-to-point...

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Bibliographic Details
Published inOptics express Vol. 28; no. 20; p. 29876
Main Authors Wang, Zhe, Li, Guoqiang, Hu, Fangchen, Chi, Nan
Format Journal Article
LanguageEnglish
Published 28.09.2020
Online AccessGet full text
ISSN1094-4087
1094-4087
DOI10.1364/OE.404925

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Summary:In this paper, we demonstrate a Toeplitz concatenated matrix aided independent component analysis (TCM-ICA) equalizer that can skillfully compensate for the inter-channel interference (ICI) of super-Nyquist multiband carrierless amplitude and phase modulation ( m -CAP) system. In the point-to-point super-Nyquist m -CAP visible light communication (VLC) scenario, we experimentally demonstrated a system-level average spectral efficiency (SE) enhancement of 0.50 b/s/Hz in comparison to the conventional scheme. In the multiple-input single-output (MISO) super-Nyquist 5-CAP scenario, the subcarrier-level Q factor enhancements of 4.4 dB, 5.2 dB, and 6.5 dB are achieved in comparison with the least-mean-square (LMS) post-equalizer for the 2 nd , 3 rd and 4 th subcarrier, respectively. As far as we know, the TCM-ICA equalizer is the most effective ICI compensation scheme to enhance SE in the super-Nyquist m -CAP systems.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.404925