Pulse or digital communications – Spread spectrum
Reexamination Certificate
2006-06-20
2006-06-20
Patel, Jay K. (Department: 2634)
Pulse or digital communications
Spread spectrum
C375S137000
Reexamination Certificate
active
07065125
ABSTRACT:
This invention is a multiple access communication technique by which a multitude of transmitters communicate with receivers using direct sequence spread spectrum signaling. The direct sequence codes are reused by a large number of simultaneous transmitters, so the system is named Code Reuse Multiple Access (“CRMA”). This reuse method requires only a small number of codes relative to the number of simultaneous transmitters, and can use as few as one code for all the users. The direct sequence codes are not required to have special properties such as maximal length. The lengths of the spreading codes employed are not necessarily related to the bit or symbol interval. CRMA can be implemented on a Paired Carrier Multiple Access (“PCMA”) system with or without a novel receiver structure which is also described.
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Dankberg Mark D.
Miller Mark J.
Pateros Charles N.
Odom Curtis
Patel Jay K.
Townsend and Townsend / and Crew LLP
Viasat, Inc.
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