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

Sunilkumar K.; Anand N.; Satheesh S. K.; Krishna Moorthy K.; Ilavazhagan G.

doi:10.1117/12.2593602

1 August 2021 Bit error rate of free-space optical communication systems through exponentiated Weibull turbulent channels: impact of atmospheric aerosol induced warming

Sunilkumar K., Anand N., Satheesh S. K., Krishna Moorthy K., Ilavazhagan G.

Author Affiliations +

Proceedings Volume 11834, Laser Communication and Propagation through the Atmosphere and Oceans X; 118340W (2021) https://doi.org/10.1117/12.2593602
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

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 (C_n²) 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.

Conference Presentation

Citation Download Citation

Sunilkumar K., Anand N., Satheesh S. K., Krishna Moorthy K., and Ilavazhagan G. "Bit error rate of free-space optical communication systems through exponentiated Weibull turbulent channels: impact of atmospheric aerosol induced warming", Proc. SPIE 11834, Laser Communication and Propagation through the Atmosphere and Oceans X, 118340W (1 August 2021); https://doi.org/10.1117/12.2593602

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