eOA 2016
A Slide Match and Iteration Approach for Mobile
Underwater Acoustic Communication
R.
This paper focusses on the requirements for
mobile underwater acoustic communication. In this paper, we
adopt a chirp signal, which has a Doppler insensitive property, as
the communication carrier, and a slide match and propose an
iteration based approach to estimate the sequenced Doppler
coecient. We rst estimate the initial Doppler coecient of the
synchronization signal using Fractional Fourier transformation.
Then, based on this initial coecient, a slide match and iteration
approach is applied to adacent chirp codes which produces
information to estimate the new Doppler coecient and
demodulation information at the same time. Compared with
other methods, the proposed algorithm could obtain a higher
precision of the Doppler coecient with low computational
burden. Simulation results show that the proposed method
outperforms the traditional constant Doppler compensation
approach and it could be easily realized in practical application.
R.