- Tytuł:
- Measurement of impulse response of shallow water communication channel by correlation method
- Autorzy:
-
Schmidt, J.
Kochańska, I.
Schmidt, A. - Powiązania:
- https://bibliotekanauki.pl/articles/331786.pdf
- Data publikacji:
- 2017
- Wydawca:
- Polskie Towarzystwo Akustyczne
- Tematy:
-
underwater communications
impulse response
delay spread
Doppler spread
coherence time
coherence bandwidth
PRBS
HFM - Opis:
- 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.
- Źródło:
-
Hydroacoustics; 2017, 20; 149-158
1642-1817 - Pojawia się w:
- Hydroacoustics
- Dostawca treści:
- Biblioteka Nauki
Artykuł