Title :
A new structure for adaptive IIR filters with guaranteed stability
Author :
Zhou, Jiong ; Li, Gang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
In this paper, a new condition, with which the bounded-input bounded-output (BIBO) stability of the adaptive filters can be ensured, is derived. Based on this result, a new structure for adaptive IIR filters is proposed. The basic feature of this structure is to cascade the denominator of the IIR filter transfer function with a set of 2nd-order sub-filters that are implemented with a normal state-space realization. Simulations are given to support the theoretical results and to compare the performance of the proposed structure with that of the classical direct-form II structure.
Keywords :
IIR filters; adaptive filters; circuit stability; state-space methods; transfer functions; BIBO stability; adaptive IIR filters; bounded-input bounded-output stability; digital filters; filter transfer function denominator; guaranteed stability filters; normal state-space realization; second-order sub-filters; Adaptive filters; Cellular neural networks; Convergence; Error correction; IIR filters; Lattices; Least squares approximation; Numerical stability; Propulsion; Transfer functions;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1495206
