Reduction of peak factor in orthogonal multicarrier modulation by amplitude limiting and coding

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111 Scopus citations

Abstract

A main disadvantage of orthogonal multicarrier modulation is that it exhibits a high peak-to-average-power ratio (PAPR). Because of this, all circuits between the output of the modulator and the input of the demodulator must be linear within a large dynamic range to avoid distortions and spectral spreading. It is therefore desirable to limit the PAPR of the multicarrier signal. A method based on amplitude limiting and forward error correcting (AL-FEC) coding is proposed for reduction of the PAPR. The performance of the AL-FEC is compared to two methods, based on block coding, specially constructed to reduce the PAPR. The AL-FEC is superior as compared to the existed methods. Moreover, its practical realization is very simple for any number of carriers.

Original languageEnglish
Pages (from-to)18-21
Number of pages4
JournalIEEE Transactions on Communications
Volume47
Issue number1
DOIs
StatePublished - 1 Dec 1999

Keywords

  • Amplitude limiting
  • Coding
  • OFDM
  • PAPR

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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