NONLINEAR ADAPTIVE IIR DIGITAL-FILTER FOR LINEAR-SYSTEM MODELING

The structure and adaptive algorithm of a nonlinear adaptive IIR digit al filter is presented. It does not need stability monitoring in the a daptive process, which has always been a computational burden and dist urbs the adaptive process in linear adaptive IIR filtering. The indivi dual parameter adaptation scheme is incorporated into the adaptive alg orithm to optimally adjust each parameter at every iteration to improv e convergence speed. Simulation results are conducted for linear IIR s ystem modeling.