Measurement of impulse response of shallow water communication channel by correlation method

• Autorzy: Schmidt J. , Kochańska I. , Schmidt A.
• Języki publikacji: EN

Abstrakty

EN

Performances of underwater acoustic communication (UAC) systems are strongly related to specific propagation conditions of the underwater channel; conditions that can additionally change in time due to the movement of the acoustic system transmitter and receiver or to reflection by underwater objects of the transmitted signal. The time-varying impulse response is a comprehensive description of dynamically changing transmission properties of the UAC channel. It is a basis for estimation of stochastic parameters used for designing the signaling scheme of the communication system. The paper presents the results of a measurement experiment conducted in a shallow water environment. The channel impulse response was measured by the correlation method with the use of two kinds of broadband signals: pseudo-random binary sequence (PRBS) and hyperbolic frequency modulation chirp (HFM). For each measurement result statistical transmission parameters, namely delay spread, Doppler spread, coherence time, and coherence bandwidth were estimated.

Słowa kluczowe

EN

underwater communications; impulse response; delay spread; Doppler spread; coherence time; coherence bandwidth; PRBS; HFM

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2017
• Tom: Vol. 20
• Strony: 149--158
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Schmidt J.

• Gdansk University of Technology, Faculty of Electronics, Telecommunication and Informatics, Department of Marine Electronics Systems G. Narutowicza 11/12, 80-233 Gdansk, Poland

autor

Kochańska I.

• Gdansk University of Technology, Faculty of Electronics, Telecommunication and Informatics, Department of Marine Electronics Systems G. Narutowicza 11/12, 80-233 Gdansk, Poland

autor

Schmidt A.

• Gdansk University of Technology, Faculty of Electronics, Telecommunication and Informatics, Department of Marine Electronics Systems G. Narutowicza 11/12, 80-233 Gdansk, Poland

Bibliografia

• [1] I. Kochanska, J. Schmidt, and M. Rudnicki, Underwater Acoustic Communications in Time-Varying Dispersive Channels, Federated Conference on Computer Science and Information Systems, M. Ganzha, L. Maciaszek, M. Paprzycki (eds). ACSIS, vol. 8, pp. 467-–474, 2016.
• [2] L. E. Franks, Carrier and Bit Synchronization in Data Communication – A Tutorial Review, IEEE Transactions on Communications, Vol. COM-28, No. 8, pp. 1107 – 1121, 1980.
• [3] J. Schmidt, The development of an underwater telephone for digital communication purposes, Hydroacoustics vol. 19 , pp. 341-352, 2016.
• [4] T. S. Rappaport, Wireless Communications: Principles and Practice, Second Edition, Prentice Hall, 2002.
• [5] R. Studanski, A. Zak, Measurement of Hydroacoustic Channel Impulse Response, Applied Mechanics and Materials, vol. 817, pp. 317-324, 2016.

Uwagi

PL

Opracowanie w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).