Results 31 to 40 of about 17,683 (311)
Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel [PDF]
, 2008 An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which
Ghassemlooy, Zabih +9 more
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Challenges for optical turbulence characterization and prediction at optical communication sites [PDF]
, 2023 editorial reviewedModelling of atmospheric optical turbulence has been of interest in astronomy for several decades, e.g. for site characterization and flexible scheduling.
Orban De Xivry, Gilles +4 more
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IEEE Photonics Journal, 2023 In fiber-based optical receivers such as coherent receiver, the optical signal reaching the receiver's aperture is coupled to the optical fiber through a set of lenses.
Woohyeon Moon, Hoon Kim
doaj +1 more source
Free space optical system performance for a Gaussian beam propagating through non Kolmogorov weak turbulence [PDF]
, 2009 Atmospheric turbulence has been described for many years by Kolmogorov's power spectral density model because of its simplicity. Unfortunately several experiments have been reported recently that show Kolmogorov theory is sometimes incomplete to describe
LARRY C. ANDREWS +6 more
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International Journal of Antennas and Propagation, 2013 Free Space Optics (FSO) links are affected by several impairments: optical turbulence, scattering, absorption, and pointing. In particular, atmospheric optical turbulence generates optical power fluctuations at the receiver that can degrade ...
A. Andò +6 more
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IEEE Photonics Journal, 2019 Optical communication is a promising strategy for deep space exploration but it is susceptible to coronal solar wind turbulence impairments during superior solar conjunction.
Guanjun Xu, Min Zeng
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32 Gbps QPSK Optical Communication Technology Based on a New Equalizer in Atmospheric Turbulence
IEEE Access, 2021 In this paper, cascaded least mean square-least mean square (LMS-LMS) adaptive equalization scheme is proposed based on fiber coupling system, in order to improve the transmission performance of quadrature phase shift keying (QPSK) modulated optical ...
Binyu Li +3 more
doaj +1 more source
, 2006 A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus +9 more
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Photonics, 2021 Partially coherent optical vortices have been applicated widely to reduce the influence of atmospheric turbulence, especially for free-space optical (FSO) communication.
Jiao Wang +5 more
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Spatial Fluctuations of Optical Turbulence Strength in a Laboratory Turbulence Simulator
PhotonicsControlled turbulence simulators in the laboratory have been extensively employed to investigate turbulence effects on light propagation in the atmosphere, driven by some advanced optical engineering such as remote sensing, energy-delivery systems, and ...
Yanling Li +6 more
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