Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2004-01-28
2008-12-09
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S282000
Reexamination Certificate
active
07463670
ABSTRACT:
A spread spectrum coding method. First, a data signal containing a DC component is encoded into an encoded data signal without any DC component. The encoded data signal excluding any DC component is then spread with a spreading code to generate a transmission signal, wherein the transmission signal does not contain any DC component. Furthermore, an alternative method is to spread a data signal with a spreading code to generate a transmission signal, wherein the data signals, spreading codes, and transmission signals all contain a DC component. The transmission signal is then encoded to remove the DC component.
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Twu Dsun-Chie
Wang Hai-Wei
Guarino Rahel
Payne David C.
Rabin & Berdo P.C.
Realtek Semiconductor Corp.
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