The effect of noise on adaptive envelope-constrained filters

被引：0
|
作者：
Zheng, WX [1 ]
机构：
[1] Univ Western Sydney Nepean, Sch Sci, Kingswood, NSW 2747, Australia
来源：
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE | 2000年 / 31卷 / 04期
关键词：
D O I：
10.1080/002077200291000
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The performance of the envelope-constrained filters designed by the newly developed adaptive algorithms may deteriorate when the input signal is contaminated by noise. The average window with a growing window size, and the exponentially weighted aver age window are presented. It is shown that the noise-induced bias in the augmented cost function will be reduced because applying such an averaging scheme helps increase values of the signal-to-noise ratio at the filter input channel. With this, the noise effect on the adaptive envelope-constrained filters can be depressed. Simulation results are given to illustrate the improved performance of the adaptive envelope-constrained filters designed in conjunction with the average window.
引用
收藏
页码：421 / 428
页数：8
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