Adaptive filter and a method of preventing divergent...

Details Adaptive filter and a method of preventing divergent... Adaptive filter and a method of preventing divergent...

H - Electricity

03

H

H03H 21/00 (2006.01) H03H 17/02 (2006.01) H04L 25/03 (2006.01)

Patent

CA 2055831

A method of preventing divergent behavior of a recursively adjusted adaptive filter and an adaptive filter to which the method is applied are disclosed. The adaptive filter is adjusted by alternately carrying out two kinds of corrections during respective correction terms. In the first correction term, each tap gain in the adaptive filter is corrected through a recursive correction algorithm. In the second correction term, a new tap gain is produced by multiplying the current tap gain by a constant which is predetermined so as to suppress divergent tendency in recursively corrected values of each tap gain. Therefore, operations to make recursively corrected values of each tap gain converge and operations to suppress divergent tendencies in the recursively corrected values of each tap gain are executed alternately.

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