Channel Emulation of Satellite-to-Ground APD-based FSO Link in the Presence of Atmospheric Turbulence Fading

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Free Space Optics (FSO) is emerging frontier technology in the field of ground-space communication that offers significant benefits in direction of expanding the information bandwidth. Wireless optical links are challenged by atmospheric weather processes and especially atmospheric turbulence, which is solely addressed in the current work. Considering atmospheric channel prototyping and turbulence simulations, laboratory characterization of FSO feeder links allowing tests of high-end components and technologies is carried out. In order to evaluate satellite-to-ground optical downlinks using a state-of-the-art APD receiver with Trans-Impedance Amplifier (TIA), self-developed FSO channel emulator implementing optical-fiber-based variable attenuator is utilized. Furthermore, the input scintillation data are modelled based on vast atmospheric radiosonde observation databases together with applying Log-normal and Gamma-Gamma FSO channel modelling. This leads to precise characterization of the used APD-TIA photodetector under test whose performance is measured with a high resolution oscilloscope and a bit error rate tester. Consequently, by means of this proof of concept, atmospheric scintillations and their negative influence over satellite-to-ground laser communication scenarios are evaluated without involving real near-Earth test campaigns.
Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Telecommunications, ConTEL 2021
EditorsMartina Antonic, Jurica Babic
PublisherIEEE Xplore
Number of pages4
ISBN (Electronic)978-9-5318-4271-6
Publication statusPublished - 30 Jun 2021
Event16th International Conference on Telecommunications: ConTEL 2021 - Zagreb, Croatia
Duration: 30 Jun 20212 Jul 2021

Publication series

NameProceedings of the 16th International Conference on Telecommunications, ConTEL 2021


Conference16th International Conference on Telecommunications
Abbreviated titleConTEL 2021


  • atmospheric turbulence
  • channel emulator
  • Free Space Optics (FSO)
  • near-Earth communication
  • photodetectors
  • scintillation
  • testbed

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Hardware and Architecture
  • Computer Networks and Communications
  • Computer Science Applications
  • Media Technology

Fields of Expertise

  • Information, Communication & Computing
  • Advanced Materials Science

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