Multi-beam space-time coded systems for optical atmospheric channels

Jaime A. Anguita, Mark A. Neifeld, Bane V. Vasic

Research output: Contribution to conferencePaper

10 Scopus citations

Abstract

We consider a terrestrial free-space optical communication link affected by atmospheric turbulence. By means of numerical simulations we estimate the reduction in scintillation achieved by the combined effect of aperture averaging and four transmitters when mutually-incoherent sources and a realistic detector size are used. We evaluate two space-time coding schemes: the first scheme uses a repetition code operating on four transmitters, and the second scheme uses a size-four rate-one space-time block code, originally proposed for wireless radio-frequency links. Both schemes deliver large signal-to-noise ratio gains compare to a single-beam system. The first scheme gives the best performance in all cases because of the natural incoherence found among optical sources.
Original languageAmerican English
DOIs
StatePublished - 13 Nov 2006
Externally publishedYes
EventProceedings of SPIE - The International Society for Optical Engineering -
Duration: 1 Jan 2019 → …

Conference

ConferenceProceedings of SPIE - The International Society for Optical Engineering
Period1/01/19 → …

Keywords

  • Atmospheric turbulence
  • Free-space optical communication
  • Laser communication
  • Multiple-input multiple-output
  • Multiple-input single-output
  • Space-time codes

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