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西安电子科技大学雷达信号处理重点实验室,陕西,西安,710071
Published:2003
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SHUI Peng-lang, BAO Zheng. Three-Band Interpolating Complex Wavelets with Stopband Zero Suppression[J]. Acta Electronica Sinica, 2003, 31(6): 837-841.
作为设计两带双正交滤波器组和子波的有效方法
提升方法(Lifting Scheme)已广泛应用于子波构造、自适应子带编码等众多领域.本文利用三带提升方法构造了一类具有阻带零点抑制的三带双正交复内插子波.阻带零点抑制是比消失矩约束更为严格的设计条件
能够更有效地控制滤波器的阻带特性.不同于传统的滤波器组
这类复滤波器组和子波具有分割正负频率分量在不同通道的能力.
As an efficient methodology to design biorthogonal filterbanks and wavelets
the lifting scheme has been widely applied to many fields such as construction of wavelets and design of adaptive subband coders.Utilizing the three-band lifting scheme
the paper designs a novel family of biorthogonal interpolating complex wavelets with stopband zero suppression.The stopband zero suppression is a stricter design constraint than the vanishing moments
and can more effectively manipulate the stopband characteristics of filters.Unlike the traditional design
complex filterbanks and wavelets designed provide the ability to partition the positive and negative frequency components into different channels/subbands.
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