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

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 system parameters of the WDM based VLC system are optimised, the channel response of the WDM link which uses collimated light is measured simultaneously, and PS based symbols are allocated to 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
Number of pages7
JournalJournal of Lightwave Technology
Publication statusAccepted/In press - 11 May 2022

Keywords

  • Probabilistic shaping (PS)
  • adaptive bit-power loading
  • Orthogonal frequency division multiplexing (OFDM)
  • vis-ible light communication (VLC),
  • Light fidelity (LiFi)
  • wavelength division multiplexing (WDM).

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