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Method and means for increasing inherent channel capacity for wired network

  • US 7,460,661 B2
  • Filed: 03/05/2004
  • Issued: 12/02/2008
  • Est. Priority Date: 09/20/1999
  • Status: Expired due to Fees
First Claim
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1. An integrated circuit device or group of devices comprising:

  • a receive portion operable to receive signals from a wire-line;

    an amplifying portion operable to amplify the receive signals to form amplified signal-plus-noise signals;

    an I-Q portion operable to create in-phase and quadrature digital versions of said receive signals, wherein the in-phase and quadrature versions are about ninety degrees out of phase with respect to each other;

    a memory portion operable to store the signal-plus-noise signals;

    a matrix forming portion operable to form at least one matrix digitally representing a plurality of values, the values consisting of the in-phase and quadrature versions of the receive signals;

    an iterative processing portion operable to performing an iterative process on data contained in the matrix to determine an estimate of the magnitude and polarity of a noise portion of the signal-plus-noise for each of one or more trials; and

    an operation portion operable to subtract each estimated noise value from the stored signal-plus-noise version to obtain a noise-reduced signal,wherein a topographic digital number array, which covers a positive and negative range of numbers and is in equilibrium about a topocentric value, is used to detect when the polarity of the noise portion of a signal-to-noise combination changes from positive to negative or from negative to positive in response to an injection of a predetermined value probe.

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