Patent ID: 7020114
Filing Date: 2006-03-28
Classification: G01S,H04B,H04J,H04W

Abstract:
1. A method for transferring data in a code division multiple access communication system, the method comprising: generating a generic code to produce a generic spread spectrum signal; generating a plurality of message codes; spread spectrum processing data with the plurality of message codes to produce a plurality of spread spectrum message signals; combining the generic spread spectrum signal and the plurality of spread spectrum message signals to produce a combined spread spectrum signal; modulating the combined spread spectrum signal to a radio frequency signal with a carrier signal and transmitting the radio frequency signal; receiving the radio frequency signal; using a replica of the generic code, recovering the carrier signal from the radio frequency signal; acquiring and tracking the recovered-carrier signal and synchronizing the replica of the generic code to the recovered carrier signal; generating a plurality of replicas of the message codes, the replicas of the message codes synchronized to the replica of the generic code; and despeading the radio frequency signal with the plurality of the replicas of the message codes to produce the data.