Polarization-multiplexed 2 × 2 phosphor-LED wireless light communication without using analog equalization and optical blue filter

C. H. Yeh*, H. Y. Chen, Y. L. Liu, Chi Wai Chow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We propose and experimentally demonstrate a 380 (2 × 190) Mbps phosphor-light-emitting-diode (LED) based visible light communication (VLC) system by using 2 × 2 polarization-multiplexing design for in-building access applications. To the best of our knowledge, this is the first time of employing polarization-multiplexing to achieve a high VLC transmission capacity by using phosphor-based white-LED without optical blue filter. Besides, utilizing the optimum resistor-inductor-capacity (RLC) bias-tee design, it can not only perform the function of combining the direct-current (DC) and the electrical data signal, but also act as a simple LED-Tx circuit. No optical blue filter and complicated post-equalization are required at the Rx. Here, the orthogonal-frequency-division-multiplexing (OFDM) quadrature-amplitude-modulation (QAM) with bit-loading is employed to enhance the transmission data rate.

Original languageEnglish
Pages (from-to)8-11
Number of pages4
JournalOptics Communications
Volume334
Issue number1
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Free space communication
  • LED
  • Polarization-multiplexing
  • Visible light communication (VLC)

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