On the Performance of SC-FDE Schemes with Decision Feedback Equalizer for Visible Light Communications

Celik Y., Kizilirmak R. C., Odabasioglu N., UYSAL M.

17th International Conference on Transparent Optical Networks (ICTON 2015), Budapest, Hungary, 05 July 2015 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/icton.2015.7193307
  • City: Budapest
  • Country: Hungary
  • Istanbul University Affiliated: Yes

Abstract

In this paper, we investigate the two single carrier frequency domain equalization (SC-FDE) techniques, namely on-off keying single carrier frequency domain equalization (OOK-SC-FDE) and decomposed quadrature optical (DQO)-SC-FDE, under realistic channel conditions with a practical LED model for visible light communications (VLC). We first compare their performances under dynamic range constraints of the LEDs and observe lower peak-to-average power ratio (PAPR) for SC-FDE schemes as compared to orthogonal division multiplexing (OFDM) techniques. We further introduce decision feedback equalizer (DFE) for SC-FDE schemes and demonstrate performance improvement in multi-tap indoor VLC channels.