16 December 2013 Signal estimation for the gamma–gamma turbulence model
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Optical Engineering, 52(12), 120501 (2013). doi:10.1117/1.OE.52.12.120501
Abstract
Free space optical links get adversely affected by atmospheric turbulence besides aerosol-based scattering and attenuation, causing signal degradation at the receiving terminal. The gamma–gamma probability density function has been extensively utilized for modeling the received signal strength under all turbulence regimes. An estimator with an underlying gamma–gamma turbulence model is being proposed. For the estimation of optical signal intensity, a minimum mean square error criterion has been used to develop the proposed estimator. It is assumed that the receiver is operating under shot noise–limited conditions, and the received signal is detected using a PIN photodiode.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sajid S. Muhammad, Bushra Rashid, Allah Ditta Raza, "Signal estimation for the gamma–gamma turbulence model," Optical Engineering 52(12), 120501 (16 December 2013). http://dx.doi.org/10.1117/1.OE.52.12.120501
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KEYWORDS
Turbulence

Signal detection

Atmospheric modeling

Free space optics

Error analysis

Atmospheric optics

Receivers

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