Method of generating a time shifted signal
Patent 7010021 Issued on March 7, 2006. Estimated Expiration Date: 
September 24, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 24, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPre-acquisition frequency offset removal in a GPS receiver Mitigation of multipath effects in global positioning system receivers Method and apparatus for code synchronization in a global positioning system receiver Patent #: 6163567 InventorsAssigneeApplicationNo. 09961983 filed on 09/24/2001US Classes:375/149, Having specific code synchronization375/136, Receiver375/148, Multi-receiver or interference cancellation375/130, SPREAD SPECTRUM375/150, Correlation-type receiver342/357.09With transmission of location-indicative information to or from a remote stationExaminersPrimary: Bayard, EmmanuelInternational ClassH04B 1/69AbstractA time shifted replica signal (SLS) is generated from a reference signal (SPS) including a series of samples (A to K) describing bits of a data message, the sampling rate being at least twice the data message bit rate. The phases of the reference signal samples are determined with respect to virtual epochs (41) of the data message bits of the reference signal (SPS). The time shifted replica signal (SLS) is composed from the reference signal samples as a function of the phases of the reference signal samples. In another embodiment, the time shifted replica signal (SLS) is composed from the reference signal samples (A to K), the sampling rate of the replica signal (SLS) being the same as that of the reference signal (SPS), at least one reference signal sample (A to K) not being present in the time shifted replica signal (SLS).Field of SearchSPREAD SPECTRUMHaving specific code acquisition or tracking Receiver Having specific code acquisition or tracking Having correlation-type receiver Having multi-receiver or interference cancellation Correlation-type receiver Having specific code synchronization Code division (CDMA) Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA) Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA) Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA) | |
