RT Journal Article
T1 Novel approximation of misalignment fading modeled by Beckmann distribution on free-space optical links
A1 Boluda-Ruiz, Rubén
A1 García-Zambrana, Antonio
A1 Castillo-Vázquez, Beatriz
A1 Castillo-Vázquez, Carmen
K1 Turbulencia atmosférica
K1 Comunicaciones ópticas
AB A novel accurate and useful approximation of the well-known Beckmann distribution is presented here, which is used to model generalized pointing errors in the context of free- space optical (FSO) communication systems. We derive an approximate closed form probability density function (PDF) for the composite gamma-gamma (GG) atmospheric turbulence with the pointing error model using the proposed approximation of the Beckmann distribution, which is valid for most practical terrestrial FSO links. This approximation takes into account the effect of the beam width, different jitters for the elevation and the horizontal displacement and the simultaneous effect of nonzero boresight errors for each axis at the receiver plane. Additionally, the proposed approximation allows us to delimit two different FSO scenarios. The first of them is when atmospheric turbulence is the dominant effect in relation to generalized pointing errors, and the second one when generalized pointing error is the dominant effect in relation to atmospheric turbulence. The second FSO scenario has not been studied in-depth by the research community. Moreover, the accuracy of the method is measured both visually and quantitatively using curve-fitting metrics. Simulation results are further included to confirm the analytical results.
PB Optica Publishing Group
YR 2016
FD 2016
LK https://hdl.handle.net/10630/32917
UL https://hdl.handle.net/10630/32917
LA eng
NO Rubén Boluda-Ruiz, Antonio García-Zambrana, Carmen Castillo-Vázquez, and Beatriz Castillo-Vázquez, "Novel approximation of misalignment fading modeled by Beckmann distribution on free-space optical links," Opt. Express 24, 22635-22649 (2016) https://doi.org/10.1364/OE.24.022635
NO Junta de Andalucía (research group "Communications Engineering (TIC-0102)") and Universidad de Málaga.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026