Patent ID: 7106853

Claim:
A method for increasing the signal to noise ratio of a broadband receive wire-line system, said method comprising: receiving receive signals from a wire-line, wherein the receive signals comprise a continuous broadband frequency spectrum; amplifying the receive signals to form amplified signal-plus-noise signals; creating in-phase and quadrature digital versions of the received signals, wherein the in-phase and quadrature versions are about ninety degrees out of phase with respect to each other; storing the signal-plus-noise signals in a memory device; forming at least one matrix digitally representing a plurality of values, the values consisting of the in-phase and quadrature versions of the receive signals; using a topographic digital number array, that covers a bipolar range and is in equilibrium about a topocentric value, to detect when the polarity of the noise portion of a signal-to-noise combination chances from positive to negative or from negative to positive in response to an injection of a predetermined value probe; performing an iterative process on data contained in the matrix, wherein the iterative process converges to an estimate of the magnitude and polarity of a primarily noise portion of the signal-plus-noise for each trial; and, subtracting each estimated noise value from the stored signal-plus-noise version to obtain a noise-reduced signal, wherein the noise-reduced signal is a broadband signal exhibiting a reduction in the overall system noise and is obtained without the use of a transversal filter.