TY - GEN
T1 - Simulation framework for classical and quantum communications over the free-space optical channel
AU - Navitskaya, R.
AU - Li, S.
AU - Novik, P.
AU - Koltchanov, I.
AU - Richter, A.
N1 - Publisher Copyright:
© 2023 SPIE.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - 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.
AB - 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.
KW - FSO
KW - QKD
KW - channel model
KW - free-space
KW - inter-satellite
KW - satellite
KW - simulation framework
KW - terrestrial
UR - http://www.scopus.com/inward/record.url?scp=85159780769&partnerID=8YFLogxK
U2 - 10.1117/12.2648365
DO - 10.1117/12.2648365
M3 - Conference contribution
AN - SCOPUS:85159780769
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Free-Space Laser Communications XXXV
A2 - Hemmati, Hamid
A2 - Robinson, Bryan S.
PB - SPIE
T2 - Free-Space Laser Communications XXXV 2023
Y2 - 30 January 2023 through 1 February 2023
ER -