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RESEARCH PRODUCT
A Nonisovelocity Geometry-Based Underwater Acoustic Channel Model
Matthias PatzoldMeisam NaderiAlenka Zajicsubject
010505 oceanographyComputer Networks and CommunicationsComputer scienceAutocorrelationAerospace Engineering020206 networking & telecommunicationsGeometry02 engineering and technology01 natural sciencesDelay spreadAutomotive Engineering0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringUnderwaterUnderwater acousticsPower delay profileUnderwater acoustic communicationCoherence bandwidth0105 earth and related environmental sciencesCommunication channeldescription
This paper proposes a new geometry-based shallow underwater acoustic (UWA) channel model allowing for nonisovelocity ocean conditions. The fact that the isovelocity assumption does not hold in many real-world scenarios motivates the need for developing channel models for nonisovelocity UWA propagation environments. Starting from a geometrical model, we develop a stochastic channel model for a single-input single-output (SISO) vehicle-to-vehicle UWA channel assuming that the ocean surface and bottom are rough and that the speed of sound varies with depth. The effect of the nonisovelocity condition has been assessed regarding its influence on the temporal autocorrelation function, the frequency correlation function (FCF), and the power delay profile of the UWA channel model. The UWA channel model has also been validated by matching its FCF as well as the therefrom derived main characteristic quantities, such as the average delay, delay spread, and coherence bandwidth against measurement data. The proposed UWA channel model is very useful for the design and performance analysis of UWA communication systems under realistic propagation conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-04-01 | IEEE Transactions on Vehicular Technology |