摘要
根据紧支撑正交小波基的构造方法,由滤波器出发,构造满足Lawton充分条件的长度为4带参数的滤波器,它是文献[7]和[8]的一个推广。找到更一般化的具有紧支撑的正交小波基,并进行一维信号仿真实验,得到当m=2,a=5及m=3,a=10的正交小波在阈值=1的情况下,无论是用软阈值函数还是硬阈值函数,其信噪比都大于db2小波。
According to the method of constructing compactly supported orthogonal wavelet basis, by the filter, filter structure satisfies the sufficient conditions of Lawton length with 4 parameters. It is a generalization of literature on [7]and[8]. Find more general compactly supportly supported orthogonal wavelet, and the simulation experiment of one-Dimensional signal, when the and orthogonal wavelet, threshold in thecase of , whether by soft threshold function and hard threshold function,the SNR is greater than DB2 wavelet.
出处
《信息通信》
2015年第8期23-24,共2页
Information & Communications
关键词
紧支撑
正交
小波基
Lawton条件
Compactly supported
Orthogonal
Wavelet basis
Lawton conditions
