Matched filter
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United States of America Patent
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N/A
Issued Date -
Feb 20, 2003
app pub date -
Jan 16, 2002
filing date -
May 16, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a matched filter circuit, which has a small circuit scale, and can save power. An after-stage section of the matched filter circuit has n hold circuit groups H21, H22, . . . H2n connected with an output signal Dout1 (i) of a pre-stage section in parallel, and the output of each hold circuit groups H21 to H2n is connected individually to each multiplier M21, M22, . . . M2n. Each multiplier multiplies the output of each hold circuit group H21 to H2m by each multiplier d21, d22, . . . d2m. The output of each multiplier circuit M21 to M2n is inputted to an adder circuit ADD2, and then, the total sum Dout2 (correlation output) is calculated.
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