Measured channel characteristics and the corresponding performance of an underwater acoustic communication system using parametric transduction

Galvin, R.; Wang, L.S.

doi:10.1049/ip-rsn:20000617

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…In the field of communication systems using acoustic signals, there is special interest in the study of parametric effects since the propagation of underwater acoustic waves produces non-linear effects. In this sense, there are some proposals of systems that take advantage of parametric generation for the transmission of digital data [8][9][10][11][12][13][14][15]. Among them, it stands out the MAST project, PARACOM [8], implementing a type of modulation for parametric acoustic communications providing long-range communications.…”

Section: Introductionmentioning

confidence: 99%

A Novel Modulation Approach Based on Nonlinear Acoustic Signals for Underwater Communications

Campo-Valera,

Diego-Tortosa,

Asorey-Cacheda

et al. 2024

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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Nonlinear acoustics is the catalyst of a new generation of applications that are being exploited in different fields. The parametric nonlinear effect, i.e. the appearance of extra harmonics in the spectrum besides the fundamental frequency is a particular feature in nonlinear acoustic and it can be used in the field of communications. In this sense, the study of modulation is an essential aspect that suits the needs of nonlinear acoustic communications. This paper presents a novel technique of nonlinear parametric modulation-induced harmonics. This type of modulation provides a narrow directivity using low transmission frequencies (2 to 50 kHz). Its feasibility and the parametric effect are demonstrated by analyzing a recorded 16-bit parametric signal and its spectrogram. Finally, detection performance is shown by applying cross-correlation to the received signal.

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Section: Introductionmentioning

confidence: 99%

A Novel Modulation Approach Based on Nonlinear Acoustic Signals for Underwater Communications

Campo-Valera,

Diego-Tortosa,

Asorey-Cacheda

et al. 2024

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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“…The statistical distributions of received multipath fading signals in shallow water have been studied numerically and experimentally for underwater acoustic communication system design and performance analysis. [1][2][3][4][6][7][8][9][10][11][12][13][14][15] There is as yet no consensus on the fading statistics applicable in shallow water owing to various acoustical boundary conditions and applicable acoustic communication systems. However, representative statistics can be selected among these previous studies.…”

Section: Introductionmentioning

confidence: 99%

Frequency-selective fading statistics of shallow-water acoustic communication channel with a few multipaths

Bae¹,

Park²,

Kim³

et al. 2016

Jpn. J. Appl. Phys.

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The bit error rate of an underwater acoustic communication system is related to multipath fading statistics, which determine the signal-to-noise ratio. The amplitude and delay of each path depend on sea surface roughness, propagation medium properties, and source-to-receiver range as a function of frequency. Therefore, received signals will show frequency-dependent fading. A shallow-water acoustic communication channel generally shows a few strong multipaths that interfere with each other and the resulting interference affects the fading statistics model. In this study, frequency-selective fading statistics are modeled on the basis of the phasor representation of the complex path amplitude. The fading statistics distribution is parameterized by the frequency-dependent constructive or destructive interference of multipaths. At a 16 m depth with a muddy bottom, a wave height of 0.2 m, and source-to-receiver ranges of 100 and 400 m, fading statistics tend to show a Rayleigh distribution at a destructive interference frequency, but a Rice distribution at a constructive interference frequency. The theoretical fading statistics well matched the experimental ones.

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“…Parametric acoustic source is the most important source for high-resolution sub-bottom profiler, and is being used in detection sonar and communication sonar in shallow water gradually [5] [6] [7] [8] [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Acoustic Field of Broadband Parametric Sonar

Li¹

2015

Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering

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Measured channel characteristics and the corresponding performance of an underwater acoustic communication system using parametric transduction

Cited by 9 publications

References 6 publications

A Novel Modulation Approach Based on Nonlinear Acoustic Signals for Underwater Communications

A Novel Modulation Approach Based on Nonlinear Acoustic Signals for Underwater Communications

Frequency-selective fading statistics of shallow-water acoustic communication channel with a few multipaths

Simulation of the Acoustic Field of Broadband Parametric Sonar

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