Frequency domain equalization of optical channel distortion in free-space optical wireless communications

Mohsen Kavehrad, Sangwoo Lee, Binbin Wu

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


In digital communications, as an alternative to conventional time domain equalization (TEQ), frequency domain equalization (FEQ) has been of interest, in particular for OFDM. In any optical channels, such as in fiber optic transmission or free-space optical communications (FSO), there can be channel dispersion, causing intersymbol interference (ISI). One feasible solution to this is FEQ of the distorted light signal by established theory of equalization. A new idea is presented that examines possibility of adaptive optical frequency-domain pulse shaping and equalization to remedy the optical channel dispersion problem in the light spectral domain.

Original languageEnglish (US)
Title of host publicationBroadband Access Communication Technologies
StatePublished - 2006
Externally publishedYes
EventBroadband Access Communication Technologies - Boston, MA, United States
Duration: Oct 2 2006Oct 3 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceBroadband Access Communication Technologies
Country/TerritoryUnited States
CityBoston, MA


  • Amplitude mask
  • FEQ
  • Frequency domain equalization
  • Grating
  • Liquid crystal modulator
  • Mask
  • Phase mask

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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