Patent ID: 8054874
Filing Date: 2011-11-08
Classification: G05B,H03H

Abstract:
1. A method, comprising: providing a low pass filter in an adaptive filter architecture employing a fastest steepest descent method, the adaptive filter architecture comprising a fast steepest descent engine and a filter that includes a filter bank and a linear combiner, wherein the filter receives a filter input that is communicated through the filter bank and the linear combiner and that is output from the filter as a filter output; receiving an error signal at the fast steepest descent engine that is based on the filter output signal; decomposing the error signal to an error correlation vector using the fast steepest descent engine; using the fast steepest descent engine, injecting a small change to one or more weight parameters for the linear combiner; using the fast steepest descent engine, measuring changes in the error correlation vector; using the fast steepest descent engine, calculating one or more gradients, wherein the gradients are processed by the low-pass filter; and modifying the one or more weight parameters for the linear combiner based on the gradients.