Exploiting equalization techniques for improving data rates in organic optoelectronic devices for visible light communications

Paul Anthony Haigh*, Zabih Ghassemlooy, Hoa Le Minh, Sujan Rajbhandari, Francesco Arca, Sandro Francesco Tedde, Oliver Hayden, Ioannis Papakonstantinou

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

64 Citations (Scopus)

Abstract

This paper presents the use of equalization techniques in visible light communication (VLC) systems in order to increase the data rate. Here we investigate two VLC links a silicon (Si) light emitting diode (LED) and an organic photodetector (OPD), and an organic LED (OLED) plus an Si photodetector (PD), together with three equalization schemes of an RC high pass equalizer, a fractionally spaced zero-forcing equalizer (ZF) and an artificial neural network (ANN). In addition we utilize a pre-distortion scheme to enhance the performance of the digital equalizers. For both systems the bit rate achieved are 750 kb/s from a raw bandwidth (BW) of 30 kHz and 550 kb/s from a raw BW of 93 kHz.

Original languageEnglish
Article number6249708
Pages (from-to)3081-3088
Number of pages8
JournalJournal of Lightwave Technology
Volume30
Issue number19
DOIs
Publication statusPublished - 5 Oct 2012

Keywords

  • Equalizers
  • organic light-emitting diodes (OLEDs)
  • organic photodetector (OPD)
  • visible light communications (VLC)

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