Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-04-11
2006-04-11
Liu, Shuwang (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S135000, C375S140000, C375S295000, C370S320000, C370S441000
Reexamination Certificate
active
07027484
ABSTRACT:
The present invention describes a spread spectrum communication system wherein the frequency of carriers and the code channels of the carriers or both for transmission to a given remote station user vary in time. This provides for a direct sequence spectrum communications system which changes frequency or code channel according to a predetermined pattern. The code channels and frequencies can be determined in accordance with a deterministic function or based upon a subset of the data to be transmitted. A receiver structure is also described for receiving the same.
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Liu Shuwang
Nguyen Thien T.
Oehling George J.
Qualcomm Incorporated
Wadsworth Philip R.
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