Low power parallel correlator for measuring correlation between digital signal segments
Patent 5896304 Issued on April 20, 1999. Estimated Expiration Date: 
June 26, 2017. 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.
June 26, 2017. 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 ReferencesPrecorrelation digital spread spectrum receiver Low power digital receiver CPS transform correlation receiver and method Method and apparatus for accelerating code correlation searches in initial acquisition and doppler and code phase in re-acquisition of GPS satellite signals Data transmitter and receiver of a spread spectrum communication system using a pilot channel Patent #: 5712869 InventorsApplicationNo. 883161 filed on 06/26/1997US Classes:708/5, Correlation, convolution, or transformation708/422CorrelationExaminersPrimary: Mai, Tan V.Attorney, Agent or FirmInternational ClassesG06J 001/00G06F 017/15 AbstractCorrelation between a pair of digital signal segments is measured by apparatus including a plurality of multipliers. Each of the multipliers produces the product of a respective sample of each one of the signal segments. The outputs of a plurality of digital-to-analog (D/A) converters are coupled to a summer, while each respective one of the multipliers is coupled to the input of a respective one of the D/A converts. The summer produces an analog output signal equal to the sum of the analog output signals produced by the plurality of D/A converter.Field of SearchCorrelative or matched filter | |
