Abstract
This paper proposes a new method of a pole controlled IIR adaptive digital filter (ADF) with a preceded FIR section, which consists of parallel connected second order IIR filters controlled by each inherent identification error. The FIR part works to identify a flat delay and responses resulting from poles near the origin of z-plane. On the other hand, the IIR part identifies poles near the unit circle on z-plane by the proposed method. The FIR part and the IIR part cooperate mutually independently to identify the unknown system effectively. Simulation results show that the proposed IIR ADF (of 28th order) has an excellent controllability of poles and zeros.
