Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2003-02-03
2008-12-30
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S149000, C375S130000, C375S140000
Reexamination Certificate
active
07471716
ABSTRACT:
A device for spread spectrum communication is provided which enables synchronization at a high-speed even if the carrier frequency and the phase are not known precisely on the receiving end. The device for spread spectrum communication includes a toggle detecting unit and a demodulating unit. The toggle detecting unit detects a candidate of a toggle point existing in a carrier of a received signal, and the demodulating unit demodulates the received signal by multiplying the received signal by a spread code which is shifted according to a shift amount calculated based on the detected candidate.
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Frishauf Holtz Goodman & Chick P.C.
Liu Shuwang
Mathematical Assist Design Laboratories Co., Ltd.
Perez James M
LandOfFree
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