Patent ID: 7031271
Filing Date: 2006-04-18
Classification: H04B

Abstract:
1. A method of activating a radiotelephone operable in a spread-spectrum multiple access radiotelephone system, the method comprising the steps of: activating at least a portion of a searcher receiver; receiving a transmitted signal, wherein the transmitted signal comprises at least one pilot signal that is spread by a pseudorandom (PN) sequence; activating at least one demodulation branch after acquiring a PN sequence timing of a pilot signal that produces a correlation energy above a predetermined threshold, which occurs after activating at least a portion of the searcher receiver; synchronizing the at least one demodulation branch to the at least a portion of the searcher receiver after activating the at least one demodulation branch; activating a system timing unit after acquiring the PN sequence timing; and synchronizing the system timing unit to the at least one demodulation branch after synchronizing the at least one demodulation branch.