Group decision rule in code tracking using a delay lock loop...

Details Group decision rule in code tracking using a delay lock loop... Group decision rule in code tracking using a delay lock loop...

2007-12-18

2007-12-18

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S147000, C375S149000, C375S316000, C375S152000, C375S347000

Reexamination Certificate

active

10699219

ABSTRACT:
System and method for code acquisition in a wireless communications system with a delay lock loop. A preferred embodiment comprises assigning a delay lock loop (DLL) to each path in a received signal with multipath, adjusting each DLL to maximize sample strength, grouping samples that are less than a first threshold apart into groups, adjusting DLL timing of samples in groups, regrouping groups that are less than a second threshold apart, applying a group decision to regrouped groups, and repeating the regrouping and applying until all groups are greater than the second threshold apart.

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patent: 2003/0235238 (2003-12-01), Schelm et al.
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