Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-01-29
2008-01-29
Lugo, David B. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S142000, C375S143000
Reexamination Certificate
active
10650427
ABSTRACT:
System and method for performing symbol boundary aligned searches of signals. A preferred embodiment comprises a search control unit (such as search control unit725) that can determine a start and stop condition for a correlation based on a hypothesis, a searcher (such as searcher705) which includes a multiplexer that can select a subset of samples of a received sequence based on the hypothesis and start and stop conditions. The search control unit can then wait for the occurrence of the start condition and assign the hypothesis to a correlator, which will correlate the subset of samples with a locally generated pseudo-random number sequence based upon the hypothesis.
REFERENCES:
patent: 6304216 (2001-10-01), Gronemeyer
patent: 6531982 (2003-03-01), White et al.
patent: 7130331 (2006-10-01), Kang et al.
Abdulla Karim
Jeong Gibong
McDonough John G.
Nambiar Rajiv R.
Brady III Wade James
Lugo David B.
Neerings Ronald O.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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