Simulation of communication system for underwater acoustics

Essebbar, A.; Vercelloni, V.

doi:10.1109/oceans.1995.528593

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…However, the physical aspects of the communication channel are only modeled for a single environmental case. Essebar et al [3] model the shallow-water communication channel by use of the ray method. The seasonal variations of time spread and transmission loss are examined and found to be considerable.…”

Section: Modeling Of the Underwater Communication Channel-a Reviewmentioning

confidence: 99%

Stochastic simulation of acoustic communication in turbulent shallow water

Bjerrum‐Niese

Lützen²

2000

IEEE J. Oceanic Eng.

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Abstract-This paper presents a stochastic model of a turbulent shallow-water acoustic channel. The model utilizes a Monte Carlo realization method to predict signal transmission conditions. The main output from the model are statistical descriptions of the signal-to-multipath ratio (SMR) and signal fading. Probability density functions of signal envelope are evaluated by Pearsons's Skew-Kurtosis Chart, generally predicting Ricean fading. Dynamic calculations of SMR by the model overcome the main inconveniences of deterministic calculations, providing "smooth" instead of "noisy" curves as a result. Dynamic calculations of SMR and fading are concluded to provide more intelligible and realistic results than deterministic calculations.

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Section: Modeling Of the Underwater Communication Channel-a Reviewmentioning

confidence: 99%

Stochastic simulation of acoustic communication in turbulent shallow water

Bjerrum‐Niese

Lützen²

2000

IEEE J. Oceanic Eng.

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“…We can see that the BERs are decreased with the increase of input SNRs. ∑ This is the impulse response of the underwater channel [6]. There are two differences between this model and the first one.…”

Section: Simulation Examplesmentioning

confidence: 99%

Design and simulations of underwater acoustic communication receiver without PLL

Hong-juan¹,

Chao²,

LiJing-hua³

Proceedings. 2005 International Conference on Wireless Communications, Networking and Mobile Computing, 2005.

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A kind of receiver is designed for underwater acoustic communications to cope with the combined limitations of timevarying multipath and phase instabilities of the underwater channel. After quadrature demodulation and mathematical transform, the carrier phase error can be eliminated. As phaselocked loop (PLL) is not needed to track the carrier phase shift during equalization, the computational complexity can be reduced. Simulations on two different types of multipath and phase shift channels show that good performance can be achieved for the simple channel model, while satisfactory results can be obtained through multichannel diversity combining for the other channel.

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