Review of research trends in underwater communications — A technical survey

Pranitha, B.; Anjaneyulu, L.

doi:10.1109/iccsp.2016.7754395

Cited by 21 publications

(13 citation statements)

References 7 publications

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“…Based on the works [39] and [43], a generic ambient (but not site-specific) noise model can be approximated from the common sources of noise using Gaussian statistics and a continuous power spectral density (PSD). These noise sources are described as follows [44]:…”

Section: E Acoustic Noise Modelmentioning

confidence: 99%

“…It ensures that the maximum traffic flow through a an active link is lower or equal to the link capacity u ij . Lastly, constraints (43) and (44) ensure that acoustic and optical link SNRs meet their corresponding target SNRs.…”

Section: Optimization Problem Formulationmentioning

confidence: 99%

“…But if the transmit powers do not exceed the maximum modem transmit power, the minimum out of acoustic or optical transmit power is stored, and fed into the optimization model. Next, the optimization model solves the BIP problem with the objective function (37) subject to constraints (38), ( 39), ( 40), ( 41), ( 42), (43), and (44) to determine the most optimal mix of acoustic and optical links for transmitting data traffic from the network MNs to the GC resulting in the minimized total network power consumption.…”

Section: Optimization Problem Formulationmentioning

confidence: 99%

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Green Underwater Wireless Communications Using Hybrid Optical-Acoustic Technologies

et al. 2021

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Underwater wireless communication is a rapidly growing field, especially with the recent emergence of technologies such as autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs). To support the high-bandwidth applications using these technologies, underwater optics has attracted significant attention, alongside its complementary technology -underwater acoustics. Both of these technologies complement each other. In this paper, we propose a hybrid opto-acoustic underwater wireless communication model that reduces network power consumption and supports high-data rate underwater applications by selecting appropriate communication links in response to varying traffic loads and dynamic weather conditions. Underwater optics offers high data rates and consumes less power. However, due to the severe absorption of light in the medium, the communication range is short in underwater optics. Conversely, acoustics suffers from low data rate and high power consumption, but provides longer communication ranges. Since most underwater equipment relies on battery power, energy-efficient communication is critical for reliable underwater communications. In this work, we derive analytical models for both underwater acoustics and optics, and calculate the required transmit power for reliable communications in various underwater communication environments. We then formulate an optimization problem that minimizes the network power consumption for carrying data from underwater nodes to surface sinks under varying traffic loads and weather conditions. The proposed optimization model can be solved offline periodically, hence the additional computational complexity to find the optimum solution for larger networks is not a limiting factor for practical applications. Our results indicate that the proposed technique yields up to 35% power savings compared to existing opto-acoustic solutions.INDEX TERMS Green communication, hybrid networks, optimization, underwater wireless communication.

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Section: E Acoustic Noise Modelmentioning

confidence: 99%

Section: Optimization Problem Formulationmentioning

confidence: 99%

Section: Optimization Problem Formulationmentioning

confidence: 99%

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Green Underwater Wireless Communications Using Hybrid Optical-Acoustic Technologies

et al. 2021

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“…Ultrasonic waves can be used for wireless data communication and power transfer. Typical examples of well-developed practices include underwater acoustic communications [1,2,3], and biomedical applications where ultrasound is used to power and communicate with implantable devices [4,5,6]. The field of power and data transfer through metal layers using ultrasonic waves is, however, less well developed when compared to the aforementioned fields.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Power and Data Transfer through Multiple Curved Layers Applied to Pipe Instrumentation

Takahashi

Kubrusly

Braga

et al. 2019

Sensors

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Ultrasonic power and data transfer through multilayered curved walls was investigated using numerical and experimental analysis. The acoustic channel used in this paper was formed by two concentric pipes filled with water, aiming for applications that involve powering and monitoring sensors installed behind the pipe walls. The analysis was carried out in the frequency and time domains using numerical and experimental models. Power and data were effectively simultaneously transferred through the channel. A remote temperature and pressure sensor was powered and interrogated throughout all the layers, and the power insertion loss was 10.72 dB with a data transmission rate of 1200 bps using an amplitude modulated scheme with Manchester coding. The efficiency of the channel was evaluated through an experimental analysis of the bit error rate (BER) with different values of signal-to-noise ratio (SNR), showing a decrease in the number of errors compared with detection without Manchester coding.

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“…Other application widely used which helped to boost the growth of acoustic waves, mainly the ultrasonic waves, was the biomedical industry, for instance, the ultrasound-based diagnostic imaging technique (ultrasonography) [26] and wireless power and data communication of devices located inside the human body [27]. Comparing with the methods to communicate through a metal layer, the biomedical application and the underwater acoustic communication already have a long period of research, being in a mature state of development [124][125][126][127][128].…”

Section: Wireless Power and Data Transmission Based On Acoustic Wavesmentioning

confidence: 99%

Wireless Ultrasonic Energy and Data Transmission Through Fluid and Metallic Layers

TAKAHASHI¹

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Review of research trends in underwater communications — A technical survey

Cited by 21 publications

References 7 publications

Green Underwater Wireless Communications Using Hybrid Optical-Acoustic Technologies

Green Underwater Wireless Communications Using Hybrid Optical-Acoustic Technologies

Ultrasonic Power and Data Transfer through Multiple Curved Layers Applied to Pipe Instrumentation

Wireless Ultrasonic Energy and Data Transmission Through Fluid and Metallic Layers

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