Abstract
This article is devoted to the comparison of preambles for signal detection in underwater acoustic (UWA) communications. The main feature of the UWA channel is the strong influence of the Doppler effect on transmitted signals. This is because the lowest and the highest frequencies of the UWA system bandwidth can differ by from several tens percent to several hundred percent so transmitted signal suffers from frequency dependent Doppler frequency shift. The following pretenders are considered: m-sequences, OFDM-symbols, linear and hyperbolic frequency modulated (LFM and HFM) signals. When modeling stationary and moving transmitter and receiver in shallow water channels, it is shown that HFM provides the best performance.
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Acknowledgements
This research work was supported by Peter the Great St. Petersburg Polytechnic University in the framework of the Program “5-100-2020”
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Khuc, B., Vylegzhanin, E., Chilingarov, A., Puzko, D., Batov, Y. (2021). Preamble Signals for Detection Timing and Doppler Synchronization in Underwater Acoustic Communications. In: Velichko, E., Vinnichenko, M., Kapralova, V., Koucheryavy, Y. (eds) International Youth Conference on Electronics, Telecommunications and Information Technologies. Springer Proceedings in Physics, vol 255. Springer, Cham. https://doi.org/10.1007/978-3-030-58868-7_75
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DOI: https://doi.org/10.1007/978-3-030-58868-7_75
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