Implementations of adaptive IIR filters with lowest complexity

被引：2
|
作者：
Williamson, GA
机构：
[1] Dept. of Elec. and Comp. Engineering, Illinois Institute of Technology, Chicago
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING | 1997年 / 44卷 / 08期
关键词：
adaptive filtering; adaptive IIR filters; sensitivity functions;
D O I：
10.1109/82.618044
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The problem of implementing adaptive IIR filters of minimum complexity is considered, The complexity used here is the number of multiplications in the implementation of the structures generating both the adaptive filter output and the sensitivities to be used in any gradient-based algorithm, This complexity is independent of the specific adaptive algorithm used, It is established that the sensitivity generation requires a minimum of N additional states, where N is the order of the filter. This result is used to show a minimum complexity of 3N + 1 multiplications for an order N filter. Principles to use in the construction of such lowest complexity implementations are provided, and examples of minimum complexity direct-form, cascade-form, and parallel-form adaptive IIR Biters are given.
引用
收藏
页码：673 / 678
页数：6
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