Simulation framework for classical and quantum communications over the free-space optical channel

R. Navitskaya, S. Li, P. Novik, I. Koltchanov, A. Richter

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

1 Scopus citations

Abstract

Free-space optical (FSO) communication has attracted significant interest recently. This technology can potentially complement or be an integral part of next-generation networks. FSO links provide several advantages compared to conventional radio frequency links, including higher data rates, license-free spectrum, and power efficiency. Furthermore, they could be used to access users in remote areas where optical fiber communications are unavailable. Here, we present a simulation framework for modeling, designing, and analyzing classical and quantum communication systems over terrestrial and satellite free-space optical links. We address different FSO use cases in terrestrial, ground-to-satellite, satellite-to-ground, and inter-satellite links using direct- and coherent detection schemes. For the FSO channel modeling, we discuss two methods. The first approach considers atmospheric scintillation, pointing errors, the Doppler effect, attenuation due to the beam diffraction, and scintillation-induced divergence. The second method captures the wavefront of the optical beam using the phase screens technique, which provides a more detailed description of the signal propagation. Additionally, we provide essential details about system-level simulations to analyze and optimize the entire link performance. Finally, we discuss the simulation environment for designing quantum-key distribution (QKD) systems as an FSO use case. Using this simulation framework, we investigate the performance of several different FSO application examples: a terrestrial link with spatial diversity receivers, inter-satellite communication from low Earth to geostationary orbit, and a polarization-encoded BB84 with decoy states QKD over a satellite downlink.

Original languageEnglish
Title of host publicationFree-Space Laser Communications XXXV
EditorsHamid Hemmati, Bryan S. Robinson
PublisherSPIE
ISBN (Electronic)9781510659315
DOIs
StatePublished - 1 Jan 2023
Externally publishedYes
EventFree-Space Laser Communications XXXV 2023 - San Francisco, United States
Duration: 30 Jan 20231 Feb 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12413
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceFree-Space Laser Communications XXXV 2023
Country/TerritoryUnited States
CitySan Francisco
Period30/01/231/02/23

Keywords

  • FSO
  • QKD
  • channel model
  • free-space
  • inter-satellite
  • satellite
  • simulation framework
  • terrestrial

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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