Coherent synchronization of code division multiple access signals

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United States of America Patent

PATENT NO 6963548
SERIAL NO

09550505

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A novel method and apparatus is described for reducing the number of CDMA codes for a constellation of multiple trasponder platforms serving a number of subscribers in the same service area. A coherent processing technique synchronizes the phase of CDMA signals arriving at a subscriber from multiple trasponder platforms to increase the code capacity and thus the number of possible subscribers for most of the multiple transponder platform systems in current use.

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Patent Owner(s)

  • THE DIRECTV GROUP, INC.;HUGHES ELECTRONICS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Donald C D Thousand Oaks, CA 187 2546
Chang, Ming U Rancho Palos Verdes, CA 32 703
Cheng, David C Palos Verdes Estates, CA 22 475
Hagen, Frank A Palos Verdes Estates, CA 23 386
Novak, III John I West Hills, CA 17 381
Yung, Kar W Torrance, CA 37 791

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