Limitations of WSSUS modeling of stationary underwater acoustic communication channel

• Autorzy: Kochańska I. , Nissen I.
• Języki publikacji: EN

Abstrakty

EN

Performances of underwater acoustic communication (UAC) systems are strongly related to specific propagation conditions of the underwater channel. Due to their large variability, there is a need for adaptive matching of the UAC systems signaling to the transmission properties of the channel. This requires a knowledge of instantaneous channel characteristics, in terms of the specific parameters of stochastic models. The wide-sense stationary uncorrelated scattering (WSSUS) assumption simplifies the estimation of terrestrial wireless channel transmission properties. Although UAC channels are hardly ever WSSUS, the rationale of such a stochastic modeling is that over a short period of time, and for a limited frequency range, this assumption is reasonably satisfied. The limits of application of the local-sense stationary uncorrelated scattering (LSSUS) model are determined by the stationary time and frequency. This paper presents the results of LSSUS model analysis for UAC channel measurements gathered by the former Research Department for Underwater Acoustics and Marine Geophysics (FWG), now part of the WTD71, during the SIMO experiment in the Bornholm Basin of the Baltic Sea.

Słowa kluczowe

EN

underwater communications; impulse response; stationary time; stationary bandwidth; adaptive communications; WSSUS modeling

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2016
• Tom: Vol. 19
• Strony: 229--238
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Kochańska I.

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

autor

Nissen I.

• Bundeswehr Technical Center for Ships and Naval Weapons, Naval Technology and Research (WTD 71), Research Department for Underwater Acoustics and Marine Geophysics (FWG) building, Kiel, Germany

Bibliografia

• [1] I. Nissen, I. Kochańska, Stationary underwater channel experiment: acoustic measurements and characteristics in the Bornholm area for model validations, Hydroacoustics Vol. 19, 2016.
• [2] I. Kochańska, Adaptive identification of time-varying impulse response of underwater acoustic communication channel, Hydroacoustics Vol. 18, pp. 87-94, 2015.
• [3] L. E. Franks, Carrier and Bit Synchronization in Data Communiaction – A Tutorial Review, IEEE Transactions on Communications, Vol. COM-28, No. 8, pp. 1107 – 1121, 1980.
• [4] A. F. Molish, Wireless Communications. Second Edition., John Wiley & Sons, pp. 109 – 111, 2012
• [5] U. A. K. Chude Okonwo et. al., Time-scale domain characterization of non-WSSUS wideband channels, EURASIP Journal on Advances in Signal Processing, Springer 2011.
• [6] P. A. Bello. Characterization of Randomly Time-Variant Linear Channels. IEEE Transactions on Communications Systems, Volume:11, Issue: 4, December 1963.
• [7] I. Kochanska, H. Lasota, R. Salamon, System identification theory-based estimation of underwater acoustic channel for broadband communications. TICA 2005 proceedings, pp. 139–147, 2005.
• [8] M. Goetz, I. Nissen, “GUWMANET - Multicast Routing in Underwater Acoustic Networks,” in Military Communications and Information Systems Conference, MCC ’12. IEEE, Oct. 2012, pp. 1–8. Gdansk, Poland.