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Time-Domain Implementation of Continuous Wavelet Transform Based on Switched Current |
Hu Qin-chun①; He Yi-gang①; Guo Di-xin②; Li Hong-min①② |
① College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;② Dept. of Computer and Info. Engineering, Hunan Institute of Science & Technology, Yueyang 414006, China |
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Abstract 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.
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Received: 17 January 2005
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