Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-04-03
2007-04-03
Patel, Jay K. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S140000, C375S143000, C375S144000, C375S152000
Reexamination Certificate
active
10289749
ABSTRACT:
A complementary code keying (CCK) demodulator used in a RAKE receiver receiving CCK symbols in a multipath environment computes multipath interferences (MPIs) required for canceling intra-codeword chip interference (ICI). The algorithmic structure jointly computes the ICI of a plurality of possible codewords. The algorithmic structure is similar to the optimal architecture required for CCK correlation computations. The similarity between these two structures allows for the use of the same hardware at different times to compute MPIs and to compute the CCK correlation of a plurality of possible codewords.
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Chen Jeng-Hong
Peng Wei-Chung
Birch & Stewart Kolasch & Birch, LLP
DSouza Adolf
Patel Jay K.
Winbond Electronics Corp.
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