Signal redundancy anylysis on two demension time-frequency space of wavelet transform coefficients
Zhong Fan · Jiguang zazhi · 2006
Wavelet frame redundancy leads to robustness,that wavelet transform coefficient obtained in low accuracy can be used to reconstruct original signal in comparative high accuracy.Information redundancy of wavelet transform coefficient including form of continue and discrete in time-frequency space is discussed in this paper.General analysis of wavelet frame redundancy,signal redundancy,the relation between wavelet coefficient redundancy and signal redundancy,the relation between wavelet coefficient redundancy and wavelet frame redundancy also are discussed.Finally,a uniform expression is proposed to show the relation among the three.