Low power parallel correlator for measuring correlation between digital signal segments
AssigneeGeneral Electric Company
InventorsJerome Johnson Tiemann, Daniel David Harrison
Life of this patent
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Abstract
Correlation 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.
Claims10
A plural sequence parallel correlator comprising:
- a plurality of multipliers, each of said multipliers being adapted to produce the product of a respective sample of each of a plurality of digital signal sequences;
- a plurality of digital-to-analog (D/A) converters, each of said D/A converters being coupled to a respective one of said multipliers for converting the product produced by said respective one of said multipliers to an analog signal;
- and
- a summer coupled to each of said D/A converters for summing the analog signals produced by said plurality of D/A converters.
An apparatus for measuring correlation between first and second digital signals segments, said apparatus comprising:
- a plurality of multipliers, each of said multipliers being s adapted to produce the product of a respective sample of each of said first and second segments;
- a plurality of digital-to-analog (D/A) converters, each of said D/A converters being coupled to a respective one of said multipliers for converting the product produced by said respective one of said multipliers to an analog signal;
- and
- a summer coupled to each of said D/A converters for summing the analog signals produced by said plurality of D/A converters.
Dependencies are inferred from the claim text.