Statistical channel modeling of intensity fluctuations in the turbulent underwater wireless optical communication system

Singh, Mandeep, Singh, Maninder Lal, Singh, Rajandeep

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Mandeep Singh, Maninder Lal Singh, Rajandeep Singh. Статистическое моделирование флуктуаций интенсивности в канале подводной системы беспроводной оптической связи при наличии турбулентности среды. Statistical channel modeling of intensity fluctuations in the turbulent underwater wireless optical communication system [на англ. яз.] // Оптический журнал. 2022. Т. 89. № 12. С. 19–37. http://doi.org/ 10.17586/1023-5086-2022-89-12-19-37

Mandeep Singh, Maninder Lal Singh, Rajandeep Singh. Статистическое моделирование флуктуаций интенсивности в канале подводной системы беспроводной оптической связи при наличии турбулентности среды. Statistical channel modeling of intensity fluctuations in the turbulent underwater wireless optical communication system [in English] // Opticheskii Zhurnal. 2022. М. 89. № 12. З. 19–37. http://doi.org/ 10.17586/1023-5086-2022-89-12-19-37

For citation (Journal of Optical Technology):

Mandeep Singh, Maninder Lal Singh, and Rajandeep Singh, "Statistical channel modeling of intensity fluctuations in a turbulent underwater wireless optical communication system," Journal of Optical Technology. 89(12), 708-721 (2022). https://doi.org/10.1364/JOT.89.000708

Abstract:

Subject of Study. The statistical modeling of received intensity fluctuations due to temperatureinduced turbulence and the random presence of air bubbles in the Underwater Wireless Optical Communication channel is presented. Purpose of Study. Temperature-induced turbulence and air bubbles induce severe intensity fluctuations in the received optical signal which degrade the Underwater Wireless Optical Communication link performance. Method. Therefore, to characterize the turbulent water channel, an experimental setup has been designed in the laboratory which considers uniform and gradient-based temperature variations along with variable-sized bubble populations. To estimate the effect of these random variations in the water channel, a statistical approach has been
followed which characterize the nature of the recorded observations. Main Results. It is observed that the behavior of random irradiance fluctuations due to uniform and gradient-based temperature variations in Underwater Wireless Optical Communication link follows single-lobe Gaussian distribution. Moreover, with the incorporation of air bubbles the received irradiance fluctuations no longer follows single-lobe Gaussian distribution but follows a multi-lobe Gaussian distribution i.e., Gaussian mixture model which is the weighted sum of Gaussian distribution. The accuracy of the proposed Underwater Wireless Optical Communication link models is verified by conducting the Goodness of Fit test, the observed confidence interval of 95% authenticates the proposed model. Also, the performance of Gaussian mixture model based Underwater Wireless Optical Communication link has been evaluated in terms of bit error rate, the acceptable bit error rate levels between 10–14 to 10–10 have been observed. The proposed Underwater Wireless Optical Communication with Gaussian mixture model completely depicts thermally uniform, gradient-based nonuniform, and variable air bubbles population in the ocean. Practical Significance. The Gaussian mixture model can further be utilized by the researchers to estimate numerous performance parameters of the turbulent Underwater Wireless Optical Communication links using advanced modulation schemes, diversity techniques, and paves a valuable way to address the future aspects of research in this area.

Keywords:

uniform temperature variations, temperature gradients, air bubbles, Goodness of Fit, Bit error rate

Acknowledgements:

Department of Electronics and Information Technology, Ministry of Electronics and Information Technology, Government of India (MEITY-PHD-2383).

OCIS codes: 010.0010, 010.4455.

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