On the optimum performance of CE-OFDM schemes in frequency-selective channels

João Guerreiro, Rui Dinis, Paulo Montezuma

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

1 Citation (Scopus)

Abstract

Orthogonal frequency division multiplexing (OFDM) schemes are widely employed for digital transmission in several wireline and wireless communication systems. Their main drawback is the high envelope fluctuations of the transmitted signals, which leads to amplification difficulties and inefficiencies that are especially important in satellite communications. Constant envelope OFDM (CE-OFDM) techniques appear as a solution to those amplification problems since they are compatible with low-cost and highly efficient strongly nonlinear amplifiers. The basic idea behind CE-OFDM is to use the OFDM signal to modulate the phase of a given carrier. However, CE-OFDM is a nonlinear modulation and receivers based on phase demodulation can be far from optimum. In this paper we study analytically the optimum asymptotic performance of CE-OFDM schemes. It is shown that the optimum performance of CE-OFDM can be substantially better than the performance of ideal linear OFDM schemes, especially for frequency-selective channels.1

Original languageEnglish
Title of host publication2016 International Conference on Telecommunications and Multimedia (TEMU 2016)
Place of PublicationNew York, USA
PublisherIEEE
Pages104-109
Number of pages6
ISBN (Electronic)978-146738409-4
DOIs
Publication statusPublished - 24 Aug 2016
Event2016 International Conference on Telecommunications and Multimedia, TEMU 2016 - Heraklion, Greece
Duration: 25 Jul 201627 Jul 2016

Publication series

NameInternational Conference on Telecommunications and Multimedia
PublisherIEEE
ISSN (Print)2380-8578

Conference

Conference2016 International Conference on Telecommunications and Multimedia, TEMU 2016
CountryGreece
CityHeraklion
Period25/07/1627/07/16

Keywords

  • CE-OFDM
  • nonlinear distortion
  • OFDM signals
  • optimum detection
  • performance evaluation

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