Experimental demonstration of a feedback-assisted orbital angular momentum-based underwater wireless optical link across the underwater-to-air interface

Wang, Andong; Zhao, Long; Li, Shuhui; Lv, Weichao; Xu, Jing; Wang, Jian

doi:10.1109/icocn.2017.8121387

Cited by 2 publications

(3 citation statements)

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“…In [14], the link gain and delay of W2A-OWC were evaluated using Monte Carlo simulations to show the influence of dynamic environment. A feedback-assisted orbital angular momentum-based W2A-OWC link was established in [15], using a 520 nm green light laser diode. In [16], an ultraviolet communication system was demonstrated across the wavy W2A interface.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In real communication scenarios, wavy surface may randomly change the direction of light propagating into the air, which has not been addressed in [15] and [18]. The transmitter and receiver may fluctuate with the environments and not be perfectly aligned in practical W2A-OWC scenarios, which has not been addressed in [13], [15]- [19]. For robust transmission design in real W2A environments, it is essential to characterize the coverage of the W2A-OWC system by investigating the link characteristics at different receiver points.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary Characterization of Coverage for Water-to-Air Visible Light Communication Through Wavy Water Surface

et al. 2021

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In this paper, we establish a water-to-air (W2A) visible light communication (VLC) link using green light emitting diode (LED), and investigate the coverage characteristics of the designed W2A-VLC link under calm and wavy water conditions. By transmitting a high-frequency sinusoid signal, we extract the variation of link gain. Based on the received signals of an experimental W2A-VLC system, we obtain the real link gains at different receiver points and analyze the channel temporal properties in good link conditions (called link "on" state). It is seen that the mean channel gain under wavy water surface condition can be larger than that under calm water surface condition, especially when the transmitter and receiver are not perfectly aligned, due to the random spatial modulation effect of wavy water surface. Moreover, the "on" state duration and interval can be well fitted by a shifted exponential distribution and a shifted lognormal distribution, respectively. Bit error rate (BER) results reveal the effect of expanded link gain variation under wavy water surface condition. This work provides significant guidance for future works on the communication protocol design and related performance analysis.

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Section: Introductionmentioning

confidence: 99%