Method and system for reducing synchronization time in a CDMA wireless communication system
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.
Qualcomm Incorporated
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Edward G. Daisuke Joseph P. Sandip Yu-Cheun Abhijit G. Serge
Tiedemann, Jr. Terasawa Odenwalder Sarkar Jou Shanbhag Willenegger