Spread-spectrum channel searcher and method for accelerating searching in a CDMA receiver
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United States of America Patent
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Issued Date -
Dec 25, 2003
app pub date -
Jun 20, 2002
filing date -
Jun 20, 2002
priority date (Note) -
Abandoned
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Abstract
A wideband CDMA searcher and method accelerate searching for signal paths of a spread-spectrum signal. I and Q components of a received signal may be sampled at approximately once per chip and summed over one or more symbols to determine a measured channel value at a specific delay. The delay between sequentially checked paths may be one chip or less. A channel value may be estimated for each delay of the spreading code based in the measured channel values. A signal path may be selected based on the channel value for use in subsequent signal tracking.
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