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Correlation detection apparatus and fourier transform apparatus

  • US 20040042388A1
  • Filed: 06/18/2003
  • Published: 03/04/2004
  • Est. Priority Date: 06/28/2002
  • Status: Active Grant
First Claim
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1. A correlation detection apparatus for detecting a first signal in a time domain including predetermined code, and a correlation between the first signal and the predetermined code, comprising:

  • transform means for transforming the first signal in the time domain into a frequency domain;

    correlation-signal generation means for generating a correlation signal indicating a correlation between the predetermined code transformed to the frequency domain and the first signal transformed to the frequency domain; and

    correlation detection means for inverse-transforming the generated correlation signal into a signal in the time domain and detecting the correlation between the first signal and the predetermined code.

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