摘要
首次提出基于开关电流技术的时域法连续小波变换实现。该方法利用幅度调制技术产生小波链实现小波变换,为小波变换的快速实现提供了新的途径。基于双线性变换采用开关电流积分器综合实现低通滤波器,解决了时域法小波变换实用电路集成化的关键问题。对开关电流低通滤波器用ASIZ进行仿真,结果证实其性能完全满足实用要求。
Method for realizing time-domain Continuous Wavelet Transform (CWT) using Switched-current (SI) technology is firstly presented in this paper. It is shown a new way for fast implementation of CWT based on amplitude modulation techniques for generating wavelet chain. SI low pass filter is synthesized with SI integrators based on bilinear transform. Thus, it provides a solution to manufacture integrated chip of time-domain CWT. The SI low pass filter is simulated using ASIZ and verified to be able to meet the needs of time-domain CWT.
出处
《电子与信息学报》
EI
CSCD
北大核心
2007年第1期227-231,共5页
Journal of Electronics & Information Technology
基金
国家自然科学基金(50677014)
高校博士点基金(20060532016)
湖南省自然科学基金(06JJ2024)
教育部新世纪优秀人才支持计划(NCET-04-0767)资助课题
关键词
开关电流
时域
连续小波变换
幅度调制
小波链
Switched-current
Time-domain
Continuous wavelet transform
Amplitude modulation
Wavelet chain