摘要
为了提高极点提取的精度,提出了一种利用小波包变换的软阈值法去噪的改进算法,同时,利用矩阵束法提取极点。实验结果表明,在信噪比为6dB的条件下,仍然可以精确地提取极点并重构瞬态信号,为无芯RFID标签的研究提供了重要参考。
In order to raise the accuracy of the poles extraction, an improved algorithm based on the soft threshold denoising method of wavelet packet transform is proposed in this paper. In addition, the poles are acquired with the help of matrix pencil method. The experimental results show that poles still can be accurately extracted, and transient signal is reconstructed availably in 6 dB of SNR conditions. It can supply important reference value for chipless RFID tag.
出处
《微型机与应用》
2011年第19期51-53,共3页
Microcomputer & Its Applications
基金
国家自然科学基金(61075030)
关键词
小波包分析
矩阵束法
极点
wavelet packet analysis
matrix pencil method
pole
