Experimental evaluation of transmitter and receiver diversity in a terrestrial FSO link

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

21 Scopus citations


We experimentally measure and characterize the channel fluctuations in a terrestrial laser communication link using spatial diversity. We measure the signals arising from the propagation of laser beams in a system that comprises two transmit and two receive apertures under various design settings. We find that the spatial channels are statistically correlated. This spatial correlation increases with receiver aperture size and with increasing proximity between beams and/or receiver apertures. By quantifying the cross-covariance between pairs of simultaneously recorded time functions, we map the spatial channel correlation of the optical wireless link as a function of beam separation at the transmitter, receiver aperture, and receiver optics separation. We discuss the effects of transverse wind velocity and establish criteria for the design of effective multiple-input multiple-output free-space optical links affected by atmospheric turbulence.

Original languageEnglish
Title of host publication2010 IEEE Globecom Workshops, GC'10
PublisherIEEE Computer Society
Number of pages5
ISBN (Print)9781424488650
StatePublished - 2010
Event2010 IEEE Globecom Workshops, GC 2010 - Miami, United States
Duration: 5 Dec 201010 Dec 2010

Publication series

Name2010 IEEE Globecom Workshops, GC'10


Conference2010 IEEE Globecom Workshops, GC 2010
Country/TerritoryUnited States

Bibliographical note

©2010 IEEE.


  • Atmospheric turbulence
  • Channel characterization
  • Free-space optical communication
  • Laser applications
  • Multiple-input multiple-output
  • Optical communication
  • Receiver diversity
  • Spatial correlation
  • Transmitter diversity


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