Method and means for increasing inherent channel capacity for wired network
AssigneeApex/Eclipse Systems, Inc.
InventorHarry B. Smith
Life of this patent
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Abstract
A receive system providing enhanced Signal to Noise performance is applicable to a wide variety of applications including both wireless and wireline systems which further include internet type communications. Received signals are converted to digital values and stored in a manner which enables subsequent processing directed to improving the resolution of the received signals and to reduce the associated noise corresponding to the received data samples. The Signal-to-Noise ratio of the received data signals is improved as a result of processing techniques made possible by the digitally stored nature of the received data and a unique iterative data processing method.
Claims4
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.
A method for increasing the signal to noise ratio of a receive wireline system, said method comprising the steps of:
- receiving receive signals from a wire-line;
- amplifying said receive signals to form amplified signal-plus-noise signals;
- creating in-phase and quadrature digital versions of said received signals wherein said in-phase and quadrature versions are about ninety degrees out of phase with respect to each other;
- storing said signal-plus-noise signals in a memory device;
- forming at least one matrix digitally representing a plurality of values, said values consisting of said in-phase and quadrature versions of said receive signals;
- performing an iterative process on data contained in said matrix to determine an estimate of the magnitude and polarity of the noise portion of the signal-plus-noise for each trial;
- subtracting each estimated noise value from the stored signal-plus-noise version to obtain a noise-reduced signal;
- and
- using a topographic digital number array, that covers a positive and negative range and is in equilibrium about a topocentric value, 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;
- in which computed deviations form array values, which are signal level independent, are applied to one row of said matrix in the form of a plus or minus column shift results in the matrix being in equilibrium about the topocentric of the array and thereby enduring the matrix with the ability to serve as a change detector to sense progressive changes as caused by a series of iterative probes.
Dependencies are inferred from the claim text.