Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Reexamination Certificate
2005-06-24
2008-11-04
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
Reexamination Certificate
active
07447117
ABSTRACT:
An underwater communications system includes an antenna array, a sound transmission source for transmitting communication packets, and a receiver including a processor. The processor is programmed for receiving and detecting a Doppler-sensitive probe signal and training sequence, for estimating a channel impulse response function for correlating the received signal to yield a plurality of processed channel outputs, and for summing the channel outputs to yield a common receiver output. The common receiver output is applied to a Decision Feedback Equalizer (DFE) for adaptive correction of the inter-symbol interference and to retrieve the transmitted communication message.
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Karasek John J.
Legg L. George
Pihulic Dan
The United States of America as represented by the Secretary of
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