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Start Over Author "Jiong Zhou" Journal ieee transactions on signal processing
2 results on '"Jiong Zhou"'

1. A structural view of stability in adaptive IIR filters

Author

Jiong Zhou, Gang Li, and Mingxuan Sun

Subjects
Signal processing -- Methods, Digital filters -- Design and construction, Frequency response (Electrical engineering) -- Analysis, Digital signal processor, Business, Computers, Electronics, Electronics and electrical industries
Abstract

A structural view of the stability issue in adaptive IIR filters is presented and a new condition, under which the bounded-input bounded-output (BIBO) stability of the filters is ensured, is derived. Two adaptive IIR filter structures are developed based on a cascade form of second-order filters, where the first structure is fit for filters whose poles are all complex and the second one is for the constrained notch filters.

Published
2006

2. A Structural View of Stability in Adaptive IIR Filters

Author

Gang Li, Mingxuan Sun, and Jiong Zhou

Subjects
Adaptive filter, Control theory, Cascade, Lattice (order), 2D Filters, Signal Processing, Electrical and Electronic Engineering, Band-stop filter, BIBO stability, Infinite impulse response, Digital filter, Mathematics
Abstract

This correspondence deals with the stability issue in adaptive IIR filters from a structural view. A new condition, under which the bounded-input bounded-output (BIBO) stability of the filters can be ensured, is derived. Based on this result, a normal state-space realization for second-order IIR filters is proposed. It is shown that the adaptive IIR filter realized with such a structure is BIBO stable no matter it is implemented with infinite or finite precision. This property is very important for real-time applications. Though both the proposed and the normalized lattice-based structures are BIBO stable, the former is simpler and has minimal pole sensitivities. Two adaptive IIR filter structures are developed based on a cascade form of second-order filters. The first structure is fit for the filters whose poles are all complex and the second one is for the constrained notch filters. Simulations are given to demonstrate the performance of the proposed structures

Published
2006
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