Results 41 to 50 of about 888,402 (309)
Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel [PDF]
, 2006 Mitigation of index of refraction turbulence (IRT) effects is crucial in long-range atmospheric communication links. Diversity-transmission is one favorable way for fading compensation.
Perlot, Nicolas +7 more
core +1 more source
Applied Sciences, 2020 A concept of atmospheric turbulence characterization using laser light backscattered off a moving unresolved target or a moving target with a glint is considered and analyzed through wave-optics numerical simulations.
Victor A. Kulikov +3 more
doaj +1 more source
Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel [PDF]
, 2011 In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link ...
Z. Ghassemlooy +12 more
core +1 more source
Atmospheric Turbulence-Controlled Cryptosystems
IEEE Photonics Journal, 2021 To overcome the limitations of QKD, post-quantum cryptography, and computational security-based cryptography protocols in this paper, an atmospheric turbulence-controlled cryptosystem is proposed.
Ivan B. Djordjevic
doaj +1 more source
MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]
, 2009 In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
Ghassemlooy, Zabih +7 more
core +1 more source
Stochastic decomposition of atmospheric turbulence
, 2022 Gustiness and pronounced intermittent behavior of wind speed measurements in the turbulent atmospheric boundary layer are analysed. A new set of parameters is worked out which finally shows that the two-time statistics of atmospheric turbulence is ...
Morales, A., Peinke, J., Wächter, M.
core +1 more source
Rossby number similarity of an atmospheric RANS model using limited-length-scale turbulence closures extended to unstable stratification [PDF]
Wind Energy Science, 2020 The design of wind turbines and wind farms can be improved by increasing the accuracy of the inflow models representing the atmospheric boundary layer.
M. P. van der Laan +3 more
doaj +1 more source
International Journal of Optics, 2016 This paper investigates the modulation transfer function of a Gaussian beam propagating through a horizontal path in weak-fluctuation non-Kolmogorov turbulence. Mathematical expressions are obtained based on the generalized modified atmospheric spectrum,
Chao Gao, Xiaofeng Li
doaj +1 more source
Results in Optics, 2021 Aperture averaging (AA) is a potential technique to reduce the effect of atmospheric turbulence in optical wireless communications (OWC). Although there is significant research on point-like detectors, there is a gap in the study on the analytical ...
Ziyaur Rahman +2 more
doaj +1 more source
Photonics, 2022 Analytical expressions for the cross-spectral density matrix of a partially coherent twisted Laguerre-Gaussian pulsed (PCTLGP) beam in anisotropic atmospheric turbulence are derived based on the extended Huygens–Fresnel principle.
Ying Xu, Yonggen Xu, Tiejun Wang
doaj +1 more source