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- W1997707087 abstract "Free-space optical links are vulnerable to atmospheric fading and pointing errors. When a laser beam wanders, most previous works model the random radial displacement distance of the pointing error as a Rayleigh distributed random variable. However, for a non-ideally fast-tracked laser beam, the radial displacement distance at the receiver aperture may not obey the Rayleigh distribution, since the displacements in vertical and horizontal directions may not always follow a zero-mean Gaussian distribution. In this paper, we generalize a widely used pointing error model by assuming that the radial displacement distance follows a Rician distribution and derive a closed-form probability density function (PDF) of the generalized pointing error model. Furthermore, we derive closed-form PDFs for the composite lognormal and Gamma-Gamma turbulence channels using this generalized pointing error model. Error rate performance is also studied for an on-off keying signaling system with intensity modulation and direct detection in the presence of this generalized pointing error." @default.
- W1997707087 created "2016-06-24" @default.
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- W1997707087 date "2013-06-01" @default.
- W1997707087 modified "2023-09-24" @default.
- W1997707087 title "Free-space optical communications with generalized pointing errors" @default.
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- W1997707087 doi "https://doi.org/10.1109/icc.2013.6655174" @default.
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