Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-09-19
2006-09-19
Tran, Khanh Cong (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S149000
Reexamination Certificate
active
07110438
ABSTRACT:
The invention discloses a cell search method for a CDMA system for a three-stage cell search procedure. The cell search method have the steps of matching of incoming signals by a chip matched filter; over-sampling the incoming signals N times against a chip rate by a sampling device; transmitting the N over-samplers into a serial test unit, selecting a best sample among N over-samples by the serial test unit controlled by a first stage detector; and transmitting the best sample of the N over-samples into a second stage detector and a third stage detector for a trial. The best sample of the N over-samples has a maximum sampling value of the N over-samples. The invention significantly reduces the effects of non-ideal sampling so as to accomplish fast cell search.
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Ho Jan Shin
Sheen Wern Ho
Accton Technology Corporation
Ahn Sam K.
Tran Khanh Cong
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