Pilot channel tracking method based on multipath barycenter tracking loop
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United States of America Patent
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Apr 29, 2008
Grant Date -
May 20, 2004
app pub date -
Dec 12, 2001
filing date -
Dec 18, 2000
priority date (Note) -
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Abstract
The present invention discloses a method for pilot channel tracking based on multipath channel barycenter tracking loop, comprises steps of evaluating multipath fading channel parameters, calculating the barycenter of a multipath energy window, and loop filtering and adjusting the phase of spread spectrum sequence codes. The method of the invention does not need to individually track each delay path, thereby improving the tracking performance and timing recovery stability of a spread spectrum receiver. Only a multipath channel evaluator and a multipath energy window barycenter calculating means are used to track PN signals from a plurality of signal sources, thereby reducing hardware. Thus, a novelty coherent spread spectrum receiver can be constituted by cooperating with other parts.
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