UACE2017 Proceedings: Grid Waymark baseband underwater acoustic transmission model

Session:
Underwater Communications and Networking
Paper:
Grid Waymark baseband underwater acoustic transmission model
Author(s):
Li Liao, Benjamin Henson, Yuriy Zakharov
Abstract:
In this paper, we propose and investigate a model for signal transmission in fast-varying underwater acoustic (UWA) channels. In particular, this model can be used for numerical investigation of UWA communication systems with moving transmitter and/or receiver. Known modelling techniques suffer from high computational complexity for signal transmission sessions of high duration and are only applicable to single-input single-output communication systems. The known Waymark simulator can efficiently deal with long-duration transmission sessions. However, its running speed is limited by the ray tracing used for computing the waymark impulse responses. We propose to pre-compute ray parameters on a space (depth-range) grid, similarly to how it is done in the known VirTEX simulator, and use the ray parameters for the waymark impulse response computation, thus speeding up the simulation. Numerical examples show that this approach can reduce the simulator running time by 10-20 times compared to the baseband Waymark simulator, and, for some scenarios, make the simulation time close to the real time.
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