Patent Number: 7,046,718

Title: Coherent phase synchronous code division multiple access communications from multiple transponder platforms

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.

Inventors: Yung; Kar (Torrance, CA), Hagen; Frank A. (Palos Verdes Estates, CA), Feria; Ying (Manhattan Beach, CA), Chang; Donald C. D. (Thousand Oaks, CA)

Assignee: The DIRECTV Group, Inc.

International Classification: H04B 1/69 (20060101); H03D 3/24 (20060101)

Expiration Date: 5/16/02018