PAPR reduction of wavelet-OFDM systems using pilot symbols

Kelvin Anoh, Augustine Ikpehai, Khaled Rabie, Bamidele Adebisi, Wasiu Popoola

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Wavelet transform is at the heart of IEEE 1901 power line communication standard which uses orthogonal frequency-division multiplexing (OFDM) scheme. Examples of wavelets used in designing wavelet-based OFDM (WOFDM) have been shown as possessing lower peak-to-average power ratio (PAPR) than the conventional fast Fourier transform (FFT)-based OFDM. In this study, we investigate 29 different orthogonal wavelets that can be used in designing WOFDM in terms of PAPR and sidelobes behaviour of the filters that enable these wavelets. Our WOFDM model shows that most orthogonal wavelets with increasing filter coefficient lengths achieve better PAPR. In addition, we also demonstrate a method of pilot-assisted OFDM (PA-OFDM) processing to further reduce the PAPR of the WOFDM systems. This technique achieves PAPR reduction with no added complexity and no extra bandwidth cost.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538619131
DOIs
StatePublished - 16 May 2018
Externally publishedYes
Event2018 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2018 - Manchester, United Kingdom
Duration: 8 Apr 201811 Apr 2018

Publication series

Name2018 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2018

Conference

Conference2018 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2018
Country/TerritoryUnited Kingdom
CityManchester
Period8/04/1811/04/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

  • OFDM
  • PAPR
  • Wavelets
  • pilot assisted OFDM
  • power line communication
  • sidelobes

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

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