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Performance Analysis of Dual-Hop Underwater Wireless Optical Communication Systems Over Mixture Exponential-Generalized Gamma Turbulence Channels

Zedini, Emna ; Kammoun, Abla ; Soury, Hamza ; Hamdi, Mounir ; Alouini, Mohamed-Slim

IEEE transactions on communications, 2020-09, Vol.68 (9), p.5718-5731 [Periódico revisado por pares]

New York: IEEE

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Título:
Performance Analysis of Dual-Hop Underwater Wireless Optical Communication Systems Over Mixture Exponential-Generalized Gamma Turbulence Channels
Autor: Zedini, Emna ; Kammoun, Abla ; Soury, Hamza ; Hamdi, Mounir ; Alouini, Mohamed-Slim
Assuntos: Aerodynamics ; Air bubbles ; Amplification ; Atmospheric modeling ; Bit error rate ; bit-error rate (BER) ; Bivariate analysis ; Communications systems ; Computer simulation ; Distribution functions ; dual-hop relaying ; ergodic capacity ; exponential-generalized gamma (EGG) distribution ; Gain ; mixture models ; Modulation ; Monte Carlo simulation ; Ocean temperature ; Optical communication ; Optical fiber communication ; Optical scattering ; outage probability ; Performance measurement ; Probability density functions ; Probability distribution functions ; Relays ; Signal to noise ratio ; Statistical analysis ; temperature gradient ; Temperature gradients ; Turbulence ; Underwater communication ; Underwater wireless optical communication (UWOC) ; Wireless communication ; Wireless communications
É parte de: IEEE transactions on communications, 2020-09, Vol.68 (9), p.5718-5731
Descrição: In this work, we present a unified framework for the performance analysis of dual-hop underwater wireless optical communication (UWOC) systems with amplify-and-forward fixed gain relays in the presence of air bubbles and temperature gradients. Operating under either heterodyne detection or intensity modulation with direct detection, the UWOC is modeled by the unified mixture Exponential-Generalized Gamma distribution that we have proposed based on an experiment conducted in an indoor laboratory setup and has been shown to provide an excellent fit with the measured data under the considered lab channel scenarios. More specifically, we derive the cumulative distribution function (CDF) and the probability density function of the end-to-end signal-to-noise ratio (SNR) in exact closed-form in terms of the bivariate Fox's H function. Based on this CDF expression, we present novel results for the fundamental performance metrics such as the outage probability, the average bit-error rate (BER) for various modulation schemes, and the ergodic capacity. Additionally, very tight asymptotic results for the outage probability and the average BER at high SNR are obtained in terms of simple functions. Furthermore, we demonstrate that the dual-hop UWOC system can effectively mitigate the short range and both temperature gradients and air bubbles induced turbulences, as compared to the single UWOC link. All the results are verified via computer-based Monte-Carlo simulations.
Editor: New York: IEEE
Idioma: Inglês

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Performance Analysis of Dual-Hop Underwater Wireless Optical Communication Systems Over Mixture Exponential-Generalized Gamma Turbulence Channels

Zedini, Emna ; Kammoun, Abla ; Soury, Hamza ; Hamdi, Mounir ; Alouini, Mohamed-Slim

New York: IEEE

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