Performance Evaluation of 520nm Laser Diode Underwater Wireless Optical Communication Systems in the Presence of Oceanic Turbulence

He, Gufeng; Lv, Zhijian; Qiu, Chengfeng; Liu, Zhaojun

doi:10.1002/sdtp.13748

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…For instance, the Weibull model was used to characterize the fading of salinity-induced turbulence in UWOC channels [26], and generalized gamma and exponentiated Weibull distributions were found to model the fading statistics perfectly [27]. Previous studies have shown that uniform saline channels induce greater turbulence when subjected to turbulent flow due to the faster variations in the refractive index along the optical path [13].…”

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confidence: 99%

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

et al. 2021

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The non-line-of-sight (NLOS) underwater communication can offer a viable route in signal propagation and coverage, thus mitigating the pointing, acquisition, and tracking difficulties in line-of-sight optical communication. However, implementing the NLOS link is non-trivial. While the NLOS technique relies on light scattering, i.e., channel turbulence can facilitate NLOS communication, the associated path-loss (PL) can be significant. Signal fading can degrade link robustness, which arises due to ocean water temperature and salinity fluctuation and gradients. To evaluate the robustness of NLOS in natural waters, we systematically measure the link metrics, such as the bit error ratio, PL, and signal-to-noise ratio (SNR), of water bodies of uniform and nonuniform vertical salinity ranging from 30-40‰ (part-per-thousand). We found that salinity-induced turbulence can establish NLOS communication with PL reduction of 2.35 dB/m and SNR increase by 32.5% for dynamic water. Furthermore, a strong correlation was obtained between the strength of signal fluctuations and the received SNR. Finally, we obtained a Gaussian distribution of the statistical scintillation behavior. These results demonstrated the benefit of using the NLOS regime for underwater wireless sensor networks for aiding designers and engineers.

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confidence: 99%

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

et al. 2021

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“…As being improving the system capacity and essential assets of high data rate underwater wireless communication technology, optical communication towards 5G is the key solution that attracts the scientific community. Although, the most recent experimental study and the performance evaluation of 520nm wavelength laserdiode towards 5G is presented as [310]. In [310], the authors have analyzed the performance of an underwater optical system under consideration of varying salinity conditions in pure water.…”

Section: A 5g Networking System In Underwatermentioning

confidence: 99%

“…Although, the most recent experimental study and the performance evaluation of 520nm wavelength laserdiode towards 5G is presented as [310]. In [310], the authors have analyzed the performance of an underwater optical system under consideration of varying salinity conditions in pure water. Facing these issues, the Generalized Frequency Division Multiplexing (GFDM) is proposed as a novel underwater wireless network candidate towards the next generation standard based on multi-branch multicarrier filter bank in [44].…”

Section: A 5g Networking System In Underwatermentioning

confidence: 99%

Recent Trends in Underwater Visible Light Communication (UVLC) Systems

2022

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In recent years, underwater visible light communication (UVLC) has become a potential wireless candidate for signal transmission in highly critical, unknown, and acrimonious water mediums such as oceans. Unfortunately, the oceans are the least explored reservoirs in oceano-geographical history. However, natural disasters have aroused significant interest in observation and monitoring oceanic environments for the last couple of decades. Therefore, UVLC has drawn attention as a reliable digital carrier and claims a futuristic optical media in the wireless communication domain. Counterparts of traditional communications, the green, clean and safe UVLC supports high capacity of data-rate and bandwidth with minimal delay. Nevertheless, over long ranges, the deployment of UVLC is challenging rather than terrestrial basis communication. Additionally, VLC systems suffer from signal attenuation and strong turbulence channel conditions. Due to the fact that, this study provides an exhaustive and comprehensive survey of recent advancements in UVLC implementations to cope with the optical signal propagation issues. In this regard, a wide detail summary and future perspectives of underwater optical signaling towards 5G networks along with the current project schemes, channel impairments, various optical signal modulation techniques, underwater sensor network architectures with energy harvesting approaches, hybrid communication possibilities, and the Internet of underwater things (IoUTs) are concluded in this research.

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21.3: The Influence of NLOS on Underwater Wireless Optical Communication System Using an InGaN‐based Micro‐LED and NRZ‐OOK Modulation

Qiu

et al. 2021

Symp Digest of Tech Papers

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In this paper, we have studied the influence of the total reflection angle on the underwater wireless optical communication (UWOC) link, and built a UWOC link with 7° total reflection angle. Based on this UWOC link, we achieved the maximum data rate of 300 Mbps and a bit error rate (BER) of 3.10×10‐3 under the forward error correction (FEC). In addition, we testified the performance of total reflection UWOC link at different wave frequencies and amplitudes.

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Performance Evaluation of 520nm Laser Diode Underwater Wireless Optical Communication Systems in the Presence of Oceanic Turbulence

Cited by 5 publications

References 6 publications

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

Recent Trends in Underwater Visible Light Communication (UVLC) Systems

21.3: The Influence of NLOS on Underwater Wireless Optical Communication System Using an InGaN‐based Micro‐LED and NRZ‐OOK Modulation

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