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| Signal Compression and Design of Wavelet Based on Waveform Matching |
| Ding Ai-ling①②; Shi Guang-ming①; Zhang Ning①; Jiao Li-cheng① |
| ①School of Electronic Engineering, Xidian University, Xi’an 710071, China;②School of Information Engineering, Chang’an University, Xi’an 710064, China |
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Abstract Wavelet transform is widely used in data compression. How to choice the best wavelet base is a key point for improving the compression ratio. In ths paper, a idea of using wavelet base functions matching to signal which need to be compressed is put forward. A waveform matching criteria for contructing matche wavelets, which it used to compress the one-dimension signal, is given. The wavelet filter is constructed with an structuring filter banks and the criteria,and an example of compressing a one-dimension signal is presented. Compared with other wavelet filters, the matched wavelet filter is able to improve the performance of signal compression.
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Received: 13 April 2006
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2007, Vol. 29 
