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The effect of turbulence on NLOS underwater wireless optical communication channels

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摘要

Conventional line-of-sight underwater wireless optical communication (UWOC) links suffer from huge signal fading in the presence of oceanic turbulence due to misalignment, which is caused by variations in the refractive index in the water. Non-line-of-sight (NLOS) communication, a novel underwater communication configuration, which has eased the requirements on the alignment, is supposed to enhance the robustness of the UWOC links in the presence of such turbulence. This paper experimentally and statistically studies the impact of turbulence that arises from temperature gradient variations and the presence of different air bubble populations on NLOS optical channels. The results suggest that temperature gradient-induced turbulence causes negligible signal fading to the NLOS link. Furthermore, the presence of air bubbles with different populations and sizes can enhance the received signal power by seizing the scattering phenomena from an ultraviolet 377-nm laser diode.

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作者单位:

    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​
    King Abdullah University of Science and Technology​

引用该论文

Sait mohammed,Sun Xiaobin,Alkhazragi Omar,Alfaraj Nasir ,Kong Meiwei,Ng Tien,Ooi B. S.. The effect of turbulence on NLOS underwater wireless optical communication channels[J].Chinese Optics Letters,2019,17(10):10.