信息通信
信息通信
신식통신
XINXI TONGXIN
2015年
8期
23-24
,共2页
赵银善%吐尔洪江·阿布都克力木%罗丹
趙銀善%吐爾洪江·阿佈都剋力木%囉丹
조은선%토이홍강·아포도극력목%라단
紧支撑%正交%小波基%Lawton条件
緊支撐%正交%小波基%Lawton條件
긴지탱%정교%소파기%Lawton조건
Compactly supported%Orthogonal%Wavelet basis%Lawton conditions
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。
根據緊支撐正交小波基的構造方法,由濾波器齣髮,構造滿足Lawton充分條件的長度為4帶參數的濾波器,它是文獻[7]和[8]的一箇推廣。找到更一般化的具有緊支撐的正交小波基,併進行一維信號倣真實驗,得到噹m=2,a=5及m=3,a=10的正交小波在閾值=1的情況下,無論是用軟閾值函數還是硬閾值函數,其信譟比都大于db2小波。
근거긴지탱정교소파기적구조방법,유려파기출발,구조만족Lawton충분조건적장도위4대삼수적려파기,타시문헌[7]화[8]적일개추엄。조도경일반화적구유긴지탱적정교소파기,병진행일유신호방진실험,득도당m=2,a=5급m=3,a=10적정교소파재역치=1적정황하,무론시용연역치함수환시경역치함수,기신조비도대우db2소파。
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 gre-ater than DB2 wavelet.