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Underwater optical communications under turbulence and scattering: A system design approach
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OA
AI
M
Marco PinelT
Tommaso OcchipintiA
Alessandro ZavattaD
Davide Bacco DOI：10.23919/jcn.2025.000073.png)
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Abstract
En 中文
The development of wireless communication systems has reached even more ambitious goals through the years, one of this being the attempt to exchange information by using optical signals in the underwater domain. To do so, there is the need to overcome the intrinsic challenges of this environment, represented by the strong attenuations and temporal variations caused by the optical properties of the underwater medium. Hence, the feasibility of an underwater communication system necessarily passes through the ability to model the underwater channel and design a system that is resilient to this environment. In particular, the main task is to characterize the turbulence and the channel impulse response, having both a major impact on the power fading and waveform distortions experienced by the transmitted signal during the packet communication. In this work, we propose a comprehensive model for the attenuation of the underwater medium focusing on the effect of turbulence and scattering within the marine environment and their impact on the temporal response of the whole system. Then, we summarize these results in the turbulence random process model and the channel impulse response. We also analyze the performances of the system using the most important figures of merit, such as the average bit error rate (BER), ergodic capacity, outage probability and capacity, and analyze the temporal distortion of the received waveforms, using the scatter plots and the eye diagrams. The analysis is carried out using several uncoded modulation formats, without error correction and other impairments, by means of numerical simulations.
Keywords:
Physical layer
temporal response
underwater optical wireless communications
underwater turbulence
Journal
J
IF:
3.2
Papers:
47
Citations:
0
Organization
Cited Papers