Abstract
The method of Preconditioned Conjugate Gradients (PCG) is introduced as an accelerator for simple IIR algorithms to significantly increase their rate of convergence without dramatically adding to their complexity. This paper presents the IIR extension of [1], and develops a block Newton-type adaptive IIR digital filter with complexity O(log(N)). The proposed algorithm exploits a structured approximation to the Hessian which permits the application of a fast preconditioned conjugate gradient optimization method. In this novel formulation, the identification problem of the IIR coefficients separates into two subproblems, each of which may be solved by application of fast adaptive FIR techniques.
Original language | English (US) |
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Pages (from-to) | 1384-1387 |
Number of pages | 4 |
Journal | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
Volume | 2 |
State | Published - 1995 |
Event | Proceedings of the 1995 20th International Conference on Acoustics, Speech, and Signal Processing. Part 2 (of 5) - Detroit, MI, USA Duration: May 9 1995 → May 12 1995 |
All Science Journal Classification (ASJC) codes
- Software
- Signal Processing
- Electrical and Electronic Engineering