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Adaptive threshold algorithm for real-time wavelet de-noising applications

  • US 6,647,252 B2
  • Filed: 01/18/2002
  • Issued: 11/11/2003
  • Est. Priority Date: 01/18/2002
  • Status: Expired due to Term
First Claim
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1. A receiver for a communication system comprising:

  • a de-noising circuit for extracting information from a received signal with minimal loss due to noise which includes;

    a transformer which correlate the received signal to a wavelet function and produces wavelet decomposition coefficients;

    a threshold circuit, responsive to the received signal, which for applies predetermined threshold values based on the type of signal; and

    a filter coupled to the transformer and the threshold circuit, which alters the wavelet decomposition coefficients produced by the transformer using threshold values applied by the threshold circuit to produce altered wavelet coefficients from which the received signal is reconstructed with reduced noise.

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