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Adaptive Lifting Scheme Based on Orthogonal Polynomials


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Adaptive Lifting Scheme Based on Orthogonal Polynomials
YANG Han-sheng12KONG Kun-peng1XU Lei1YANG Cheng-wu2
1.Department of Physics and Electronics,Chaohu College,Chaohu 238000,China;2.School of Power Engineering,NUST,Nanjing 210094,China
lifting scheme predictive control adaptive algorithms orthogonal polynomials
To determine the prediction and updated parameters of lifting scheme,this paper takes the sum of squared detail components as an objective function,and designs predictors based on orthogonal polynomial,so that the prediction parameter can represent the features of the given data.An optimal predictor and an optimal updater are chosen for the transforming sample according to the magnitude of the correlation factors,so the lifting scheme can fit the change of original signal better.The theory and simulation results demonstrate that the filtering performance of adaptive lifting scheme based on orthogonal polynomials is better than that based on general fitting method and traditional wavelet db5,especially with low signal-to-noise ratio.


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Last Update: 2012-11-19