A two-dimensional signal space for intensity-modulated channels

Johnny Karout, Gerhard Kramer, Frank R. Kschischang, Erik Agrell

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A two-dimensional signal space for intensity-modulated channels is presented. Modulation formats using this signal space are designed to minimize average and peak power for a fixed minimum distance between signal points. The uncoded, high-signal-to-noise ratio, power and spectral efficiencies are compared to those of the best known formats. The new formats are simpler than existing subcarrier formats, and are superior if the bandwidth is measured as 90% in-band power. Existing subcarrier formats are better if the bandwidth is measured as 99% in-band power.

Original languageEnglish
Article number6249703
Pages (from-to)1361-1364
Number of pages4
JournalIEEE Communications Letters
Volume16
Issue number9
DOIs
StatePublished - 2012

Keywords

  • Direct detection
  • intensity modulation
  • noncoherent communications
  • power efficiency
  • spectral efficiency

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