Two computer models are presented, one for short-range and one for long-range propagation of acoustic signals through an underwater channel from a transmitter to a receiver. In the short-range model, the received signal is due to a direct path (steady component) and a random path (diffused component) that could be the result of boundary scattering. For the long-range case, the received signal is the superposition of a number of time-delayed, randomly propagated components arriving by different paths. Both models assume perfect transmitter-receiver synchronization but use realistic channel time delays. They demonstrate the time-varying characteristics of underwater acoustic channels and are used in simulations to evaluate the performance of the detection technique.
Underwater acoustic channel models for 4800 b/s QPSK signals
Modelle für einen akustischen Unterwasserkanal für QPSK-Signale mit 4800 b/s
IEEE Journal of Oceanic Engineering ; 16 , 1 ; 12-20
1991
9 Seiten, 23 Quellen
Article (Journal)
English
DIGITALE SIGNALVERARBEITUNG , LEISTUNGSBEWERTUNG , SIGNALVERARBEITUNG , UEBERTRAGUNGSRATE , UEBERTRAGUNGSKANAL , VERZOEGERUNGSZEIT , SIGNALERKENNUNG , INTERFERENZERSCHEINUNG , MODELLSIMULATION , RECHNERSIMULATION , UNTERWASSERNACHRICHTENTECHNIK , DIGITALUEBERTRAGUNG , DIGITALSIMULATION , PHASENUMTASTUNG , UNTERWASSERSCHALL , AKUSTISCHE SIGNALVERARBEITUNG , INTERFERENZ , SIMULATIONSMODELL
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