Power spectral estimation using parameter model method The parameters in the model are key to estimate the power spectral of a signal.Assume that the parameters of model are known,we have: w(n) x() H(Z) h(n) 5.()-5.(=)H()-H(=)s.(=) Let z=eioPower spectral estimation using parameter model method The parameters in the model are key to estimate the power spectral of a signal. Assume that the parameters of model are known, we have: ( ) ( ) ( ) ( ) ( ) 2 * * 1 xx ww ww j S z S z H z H H z S z z Let z e ω   = =     =