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Bit error rate of free-space optical communication systems through exponentiated weibull turbulent channels: Impact of atmospheric aerosol induced warming

Sunilkumar, K and Anand, N and Satheesh, SK and Krishna Moorthy, K and Ilavazhagan, G (2021) Bit error rate of free-space optical communication systems through exponentiated weibull turbulent channels: Impact of atmospheric aerosol induced warming. In: Laser Communication and Propagation through the Atmosphere and Oceans X 2021, 1-5 Aug 2021, San Diego.

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Official URL: https://doi.org/10.1117/12.2593602


Wavefront distortion of data-carrying laser beam propagating through the atmosphere has been reported to have detrimental effects on the performance of Free-Space Optical (FSO) communication systems. Optical intensity fluctuation models generally assume clear air optical turbulence where atmospheric aerosols warming effects are neglected. This variation of the refractive index structure parameter (Cn2) of the atmosphere due to the aerosol induced warming and its influence on Bit Error Rate (BER) performance of FSO systems are studied in this paper using high-resolution radiosonde and multi-satellite observations of aerosols and atmospheric thermodynamics. Based on an approximate mathematical expression built on Gauss-Laguerre quadrature rule, and a radiative transfer model-based analysis, the BER of a Differential Phase Shift Keying (DPSK) FSO communication link through Exponentiated Weibull modelled turbulence with aperture averaging has been investigated. Our results show significant signal deterioration with the aerosol-induced turbulence taking a toll on the signal to noise ratio (SNR) over more than 15 dB. BER analysis under different receiver aperture dimensions is performed with the selected intensity fluctuation model. We show that aperture averaging does not have significant influence on the performance enhancement under aerosol perturbed atmospheric conditions. © 2021 SPIE.

Item Type: Conference Paper
Publication: Proceedings of SPIE - The International Society for Optical Engineering
Publisher: SPIE
Additional Information: The copyright for this article belongs to SPIE
Keywords: Atmospheric aerosols; Atmospheric turbulence; Bit error rate; Deterioration; Errors; Optical communication; Radiative transfer; Refractive index; Signal to noise ratio, Aperture averaging; Bit-error rate; Exponentiated Weibull; Fluctuation model; Free Space Optical communication; Free space optical communication systems; Free-space optical communications systems; Intensity fluctuations; Turbulent channels; Wavefront distortion, Atmospheric thermodynamics
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited: 26 Nov 2021 11:08
Last Modified: 26 Nov 2021 11:08
URI: http://eprints.iisc.ac.in/id/eprint/70459

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