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Widrow-Hoff least-mean-squares algorithm |
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Widrow-Hoff least-mean-squares algorithm (communications) An algorithm that is widely used in adaptive signal processing; for time-discrete analysis with a finite-response filter, it is represented by the first-order difference equationWk+1=Wk+ 2μekXk, wherekis a time index that takes on integral values;Wis a vector whose components are the coefficients of the filter; μ is the convergence coefficient;ekis the residual signal or error, equal toyk-ŷk, whereykandŷkare the outputs of the plant (where the unprocessed signal is generated) and the filter, respectively; andXis a vector whose components are the present value of the input andL- 1 past values of the input, whereLis the number of filter coefficients. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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