PAPR reduction in PAM-DMT based WDM VLC

Hussien T. Alrakah*, Tilahun Z. Gutema, Sinan Sinanovic, Wasiu O. Popoola

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
9 Downloads (Pure)

Abstract

Visible light communication (VLC) can achieve high data rate transmission with discrete multitone (DMT) systems. A DMT variant is pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) which offers an energy-efficient modulation solution for VLC. However, similar to other DMT modulation techniques, PAM-DMT suffers from a high peak-to-average power ratio (PAPR). In this paper, the efficacy of pilot-assisted (PA) PAPR reduction system in PAM-DMT based VLC is demonstrated experimentally. Wavelength division multiplexing (WDM) is applied using three low-cost light emitting diodes (LEDs). The available modulation bandwidth of each light source is utilised by adaptive bit and power loading. PA PAM-DMT is compared in this work to PAM-DMT based on achievable data rate and Bit Error Rate (BER). The proposed system reduces the clipping noise and minimises the nonlinear distortion of the system by reducing the high PAPR of each wavelength. Thus, the PA PAM-DMT has achieved 8% higher data rate than the conventional PAM-DMT with no PAPR reduction.
Original languageEnglish
Title of host publication2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)
PublisherIEEE
Pages174-178
Number of pages5
ISBN (Electronic)9781665410441
ISBN (Print)9781665410458
DOIs
Publication statusPublished - 6 Oct 2022
Event13th International Symposium on Communication Systems, Networks and Digital Signal Processing - Dr. António Cupertino de Miranda Centro de Congressos, Porto, Portugal
Duration: 20 Jul 202222 Jul 2022
https://csndsp2022.av.it.pt/ (Link to conference website)

Publication series

Name2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

Conference

Conference13th International Symposium on Communication Systems, Networks and Digital Signal Processing
Abbreviated titleCSNDSP 2022
Country/TerritoryPortugal
CityPorto
Period20/07/2222/07/22
Internet address

Keywords

  • optical OFDM
  • optical wireless communication
  • visible light communication
  • pulse-amplitude-modulated discrete multitone modulation PAM-DMT
  • peak-to-average power ratio PAPR
  • pilot-assisted PA
  • wavelength division multiplexing WDM
  • Pulse-amplitude-modulated discrete multitone modulation PAM-DMT

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Signal Processing
  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications

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