Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-05-16
2006-05-16
Le, Amanda T. (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S373000
Reexamination Certificate
active
07046718
ABSTRACT:
A method for coherent phase synchronous CDMA communications between a gateway and multiple subscribers via multiple transponder platforms that includes the step of synchronizing a local reference clock for each subscriber in a service area to a single master reference clock for multiple transponder platforms wherein the distance separating the transponder platforms is constrained to a range wherein the local reference clocks for all subscribers have substantially the same phase with respect to the master reference clock.
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Chang Donald C. D.
Feria Ying
Hagen Frank A.
Yung Kar
Grunebach Georgann S.
Le Amanda T.
The DIRECTV Group Inc.
Williams Lawrence B.
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