title: Performance of synchronous optical receivers using atmospheric compensation techniques.
abstract: We model the impact of atmospheric turbulence-induced phase and amplitude fluctuations on free-space optical links using synchronous detection. We derive exact expressions for the probability density function of the signal-to-noise ratio in the presence of turbulence. We consider the effects of log-normal amplitude fluctuations and Gaussian phase fluctuations, in addition to local oscillator shot noise, for both passive receivers and those employing active modal compensation of wave-front phase distortion. We compute error probabilities for M-ary phase-shift keying, and evaluate the impact of various parameters, including the ratio of receiver aperture diameter to the wave-front coherence diameter, and the number of modes compensated.
authors.affiliation: Department of Signal Theory and Communications, Technical University of Catalonia, 08034 Barcelona, Spain.
authors.forename: Aniceto
authors.initials: A
authors.lastname: Belmonte
authors.forename: Joseph
authors.initials: J
authors.lastname: Khan
mesh_terms: D000465:Algorithms; D016477:Artifacts; D001272:Atmosphere; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*