Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-03-29
2005-03-29
Bayard, Emmanuel (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
06873647
ABSTRACT:
A method and system for generating forward link channels in a synchronous CDMA base station having a pilot pseudonoise (PN) sequence with a pilot PN sequence offset. In one embodiment the method includes the steps of generating a sync channel including a sync channel message; generating an identification channel including at least the pilot PN sequence offset; and orthogonalizing the sync channel and the identification channel. The identification channel and the sync channel are both transmitted. However, the mobile station may get the pilot PN offset from the identification channel quickly, rather than having to demodulate the entire sync channel message. The identification channel may further include an indication of the phase of the pilot PN sequence, and the epoch of the pilot PN sequence. In one embodiment, the method includes encoding the identification channel using a Golay code.
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Jou Yu-Cheun
Odenwalder Joseph P.
Sarkar Sandip
Shanbhag Abhijit G.
Terasawa Daisuke
Bayard Emmanuel
Martin Roger W.
Nguyen Thien T.
Qualcomm Incorporated
Wadsworth Philip
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