Methods and systems for acquiring signals using coherent match filtering
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jul 17, 2008
app pub date -
Jan 12, 2007
filing date -
Jan 12, 2007
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Abstract
Embodiments include methods and apparatus for verifying the detection of a correlation peak, which may represent an acquisition of a received acquisition code symbol sequence. The method includes determining a series of coherently-aligned peaks from a series of correlation peaks. Determining the plurality of coherently-aligned peaks includes correcting a frequency offset and a phase offset for each of the plurality of correlation peaks. A coherent match filter process is performed on the plurality of coherently-aligned peaks. A detection of the correlation peak may be verified when the match filter result exceeds a threshold.
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