A Note on Least Squares Fitting of Signal Waveforms

Some signal waveforms are very fast dampening oscillatory time series composed of exponential functions. The regular least squares fitting techniques are often unstable when used to fit exponential functions to such signal waveforms since such functions are highly correlated. Of late, some attempts have been made to estimate the parameters of such functions by Monte Carlo based search/random walk algorithms. In this study we use the Differential Evaluation based method of least squares to fit the exponential functions and obtain much more accurate results

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Year of publication:	2008
Authors:	Mishra, Sudhanshu K.
Publisher:	[S.l.] : SSRN
Subject:	Schätztheorie \| Estimation theory \| Kleinste-Quadrate-Methode \| Least squares method \| Signalling

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