Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-10-11
2005-10-11
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
06954488
ABSTRACT:
This invention relates to improving the signal-to-noise ratio of semi-codeless tracking by presenting a method and apparatus which employs an optimal W-code timing pattern, and/or provides signal-to-noise gain by adding L1 and L2 W-code bit timing estimate signals before combining the L1 W-code estimate signal with the L2 W-code estimate signal.
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Bocure Tesfaldet
Cooper & Dunham LLP
Dowden Donald S.
Kumar Pankaj
Trimble Navigation Limited
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