Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-04-03
2007-04-03
Deppe, Betsy L. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C455S525000
Reexamination Certificate
active
10014095
ABSTRACT:
A cell search method is disclosed in which autocorrelation patterns are subtracted from a correlation value profile. When carrying out a cell search with respect to a correlation value profile, the peak timing of a first base station is first detected and the scrambling code of this base station is identified. A path search process is then carried out using this timing and scrambling code to detect timings at which multipath occur. Autocorrelation patterns that center on the obtained frame timings and autocorrelation patterns that center on multipath are next generated and a process is performed to subtract these autocorrelation patterns from the correlation value profile. This process enables the rapid detection of peak produced by a second base station.
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Deppe Betsy L.
NEC Electronics Corporation
Scully , Scott, Murphy & Presser, P.C.
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