Method of detecting a predetermined sequence in an RF signal using a combination of correlation and FFT
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United States of America Patent
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Issued Date -
Oct 25, 2007
app pub date -
Apr 19, 2006
filing date -
Apr 19, 2006
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Abandoned
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Abstract
A method and apparatus are provided for recognizing a predetermined sequence within a radio frequency signal received on a Doppler faded radio frequency channel. The method includes the steps of correlating a reference sequence with a sequence of elements of the radio frequency signal received on the Doppler faded radio frequency channel and detecting the predetermined sequence within the received signal when a cumulative power level of subsequences of the correlated sequence exceeds a predetermined power level threshold.
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