Pilot-assisted PAPR reduction in PAM-DMT based visible light communication systems

Hussien Alrakah, Sinan Sinanovic, Waisu O. Popoola*

*Corresponding author for this work

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

4 Citations (Scopus)
164 Downloads (Pure)


Pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) offers an energy-efficient modulation solution for optical wireless communication systems. However, similar to other multicarrier modulation (MCM) techniques, PAM-DMT suffers from a high peak-to-average power ratio (PAPR). This paper experimentally demonstrates the efficacy of pilot-assisted (PA) PAPR reduction system in PAM-DMT based visible light communication (VLC) systems. PA PAM-DMT is compared in this manuscript to PAM-DMT based on Bit Error Rate (BER), Signal-to-Noise Ratio (SNR) and PAPR. A gain of 2.75 dB is achieved using 10 pilot iterations for 8-PAM.The BER performance of the PA PAM-DMT is better than that of the conventional PAM-DMT with a reduced PAPR. The proposed system allows for higher input signal swing levels while minimising the non-linearity effects that result from operating beyond Light Emitting Diode’s (LED’s) dynamic range.
Original languageEnglish
Title of host publication2021 IEEE Latin-American Conference on Communications (LATINCOM)
EditorsRamiro Velazquez
Number of pages6
ISBN (Electronic)9781665440356
ISBN (Print)9781665440363
Publication statusPublished - 23 Dec 2021
EventIEEE Latin-American Conference on Communications - Centro INDOTEL Cultura Digital (& Online), Santo Domingo, Dominican Republic
Duration: 17 Nov 202119 Nov 2021
https://latincom2021.ieee-latincom.org/ (Link to conference webiste)

Publication series

ISSN (Print)2330-989X


ConferenceIEEE Latin-American Conference on Communications
Abbreviated titleIEEE LATINCOM 2021
Country/TerritoryDominican Republic
CitySanto Domingo
Internet address


  • optical OFDM
  • optical wireless communication
  • visible light communication
  • peak-to-average power ratio PAPR
  • pilot-assisted PA

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Signal Processing
  • Computer Networks and Communications


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