Spatial correlation and irradiance statistics in a multiple-beam terrestrial free-space optical communication link

Jaime A. Anguita, Mark A Neifeld, Bane V Vasic

Research output: Contribution to journalArticle

104 Citations (Scopus)

Abstract

By means of numerical simulations we analyze the statistical properties of the power fluctuations induced by the incoherent superposition of multiple transmitted laser beams in a terrestrial free-space optical communication link. The measured signals arising from different transmitted optical beams are found to be statistically correlated. This channel correlation increases with receiver aperture and propagation distance. We find a simple scaling rule for the spatial correlation coefficient in terms of the propagation distance and we are able to predict the scintillation reduction in previously reported experiments with good accuracy. We propose an approximation to the probability density function of the received power of a spatially correlated multiple-beam system in terms of the parameters of the single-channel gamma-gamma function. A bit-error-rate evaluation is also presented to demonstrate the improvement of a multibeam system over its single-beam counterpart.

Original languageEnglish (US)
Pages (from-to)6561-6571
Number of pages11
JournalApplied Optics
Volume46
Issue number26
DOIs
StatePublished - Sep 10 2007

Fingerprint

free-space optical communication
Scintillation
Optical communication
irradiance
Bit error rate
Probability density function
Telecommunication links
Laser beams
Statistics
statistics
Computer simulation
gamma function
propagation
Experiments
bit error rate
probability density functions
correlation coefficients
scintillation
receivers
apertures

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Spatial correlation and irradiance statistics in a multiple-beam terrestrial free-space optical communication link. / Anguita, Jaime A.; Neifeld, Mark A; Vasic, Bane V.

In: Applied Optics, Vol. 46, No. 26, 10.09.2007, p. 6561-6571.

Research output: Contribution to journalArticle

@article{fc961a008d944f3db8a941624b6847d0,
title = "Spatial correlation and irradiance statistics in a multiple-beam terrestrial free-space optical communication link",
abstract = "By means of numerical simulations we analyze the statistical properties of the power fluctuations induced by the incoherent superposition of multiple transmitted laser beams in a terrestrial free-space optical communication link. The measured signals arising from different transmitted optical beams are found to be statistically correlated. This channel correlation increases with receiver aperture and propagation distance. We find a simple scaling rule for the spatial correlation coefficient in terms of the propagation distance and we are able to predict the scintillation reduction in previously reported experiments with good accuracy. We propose an approximation to the probability density function of the received power of a spatially correlated multiple-beam system in terms of the parameters of the single-channel gamma-gamma function. A bit-error-rate evaluation is also presented to demonstrate the improvement of a multibeam system over its single-beam counterpart.",
author = "Anguita, {Jaime A.} and Neifeld, {Mark A} and Vasic, {Bane V}",
year = "2007",
month = "9",
day = "10",
doi = "10.1364/AO.46.006561",
language = "English (US)",
volume = "46",
pages = "6561--6571",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "The Optical Society",
number = "26",

}

TY - JOUR

T1 - Spatial correlation and irradiance statistics in a multiple-beam terrestrial free-space optical communication link

AU - Anguita, Jaime A.

AU - Neifeld, Mark A

AU - Vasic, Bane V

PY - 2007/9/10

Y1 - 2007/9/10

N2 - By means of numerical simulations we analyze the statistical properties of the power fluctuations induced by the incoherent superposition of multiple transmitted laser beams in a terrestrial free-space optical communication link. The measured signals arising from different transmitted optical beams are found to be statistically correlated. This channel correlation increases with receiver aperture and propagation distance. We find a simple scaling rule for the spatial correlation coefficient in terms of the propagation distance and we are able to predict the scintillation reduction in previously reported experiments with good accuracy. We propose an approximation to the probability density function of the received power of a spatially correlated multiple-beam system in terms of the parameters of the single-channel gamma-gamma function. A bit-error-rate evaluation is also presented to demonstrate the improvement of a multibeam system over its single-beam counterpart.

AB - By means of numerical simulations we analyze the statistical properties of the power fluctuations induced by the incoherent superposition of multiple transmitted laser beams in a terrestrial free-space optical communication link. The measured signals arising from different transmitted optical beams are found to be statistically correlated. This channel correlation increases with receiver aperture and propagation distance. We find a simple scaling rule for the spatial correlation coefficient in terms of the propagation distance and we are able to predict the scintillation reduction in previously reported experiments with good accuracy. We propose an approximation to the probability density function of the received power of a spatially correlated multiple-beam system in terms of the parameters of the single-channel gamma-gamma function. A bit-error-rate evaluation is also presented to demonstrate the improvement of a multibeam system over its single-beam counterpart.

UR - http://www.scopus.com/inward/record.url?scp=36749043788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36749043788&partnerID=8YFLogxK

U2 - 10.1364/AO.46.006561

DO - 10.1364/AO.46.006561

M3 - Article

C2 - 17846651

AN - SCOPUS:36749043788

VL - 46

SP - 6561

EP - 6571

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 26

ER -