A METHOD FOR OPTIMIZING AN ADAPTIVE FILTER UPDATE COEFFICIENT

摘要

The method of the present invention generates an opti-mal adaptive filter update coefficient by first generating threeerror signals using a signal input and three update coeffi-cients (301- 303). Mean Square Error (MSE) values are esti-mated (307 and 308) for the first and third error signals. Thefirst MSE value (307) is subtracted (309) from the third MSEvalue (308) to generate a difference signal. The difference sig-nal is used to generate (310) an update signal that is used tomodify the update coefficients. The process of the present in-vention is repeated until the difference signal is substantiallyzero, thus optimizing the second update coefficient. This pro-cess enables an update coefficient for an adaptive filter toquickly adapt to a changing environment.