Title :
An efficient adaptive cascade IIR filter
Author :
Gao, Franklin X Y ; Snelgrove, W. Martin
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Abstract :
Adaptive cascade IIR (infinite impulse response) filters which have an easy stability check and low parameter sensitivities are studied. A novel concept is proposed which suggests backpropagating the desired signal through the inverse all-pole second-order sections and producing intermediate errors to be minimized. This concept is applied to a cascade IIR structure, resulting in an efficient adaptive cascade IIR filter. It is shown that the equation-error formulation is just a special case of backpropagation of the desired signal
Keywords :
adaptive filters; cascade networks; digital filters; filtering and prediction theory; stability; adaptive cascade IIR filter; backpropagation; infinite impulse response; inverse all-pole second-order sections; low parameter sensitivities; stability check; Adaptive filters; Backpropagation; Costs; Equations; IIR filters; Monitoring; Signal generators; Stability; Transfer functions; Transversal filters;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176369
