WDM Based 10.8 Gbps Visible Light Communication with Probabilistic Shaping

Tilahun Zerihun Gutema*, Harald Haas, Wasiu Popoola

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

In this work, we study probabilistic shaping (PS) for optical wireless communications and apply the technique to wavelength division multiplexing (WDM) based visible light communication (VLC). The performance of the proposed scheme is validated with an experimental demonstration. The experimental set up uses lenses to collimate the light beam for triple LEDs. The system parameters of the WDM based VLC system are then optimised, the channel response measured, and PS based symbols are allocated to the individual orthogonal frequency division multiplexing (OFDM) subcarriers. For the channel conditions under consideration, PS resulted in a near Shannon capacity transmission rate of 10.81 Gb/s. Comparatively, the PS resulted in 25% higher transmission rate than the widely used adaptive bit-power loading algorithm under the same channel conditions.

Original languageEnglish
Pages (from-to)5062-5069
Number of pages7
JournalJournal of Lightwave Technology
Volume40
Issue number15
Early online date19 May 2022
DOIs
Publication statusPublished - 1 Aug 2022

Keywords / Materials (for Non-textual outputs)

  • Probabilistic shaping (PS)
  • adaptive bit-power loading
  • Orthogonal frequency division multiplexing (OFDM)
  • vis-ible light communication (VLC),
  • Light fidelity (LiFi)
  • wavelength division multiplexing (WDM).
  • visible light communication (VLC)
  • OFDM
  • Light emitting diodes
  • Wavelength division multiplexing
  • Loading
  • Symbols
  • Modulation
  • wavelength division multiplexing (WDM)
  • light fidelity (LiFi)
  • orthogonal frequency division multiplexing (OFDM)
  • Signal to noise ratio

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