کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
567148 | 876050 | 2008 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Direct frequency estimation based adaptive algorithm for a second-order adaptive FIR notch filter Direct frequency estimation based adaptive algorithm for a second-order adaptive FIR notch filter](/preview/png/567148.png)
This work deals with the problem of the frequency estimation of a sinusoidal signal corrupted by broad-band noise. The direct frequency estimation based adaptive algorithm for a second-order adaptive finite impulse response (FIR) notch filter (AFNF) is thus proposed. The proposed algorithm employs the bias removal technique to remove the bias existing in the estimated parameter. The performances including the rate of convergence and the mean square error (MSE) can be easily controlled by using only one parameter, i.e., step size parameter. Moreover, the proposed filter is simple to implement and suitable for real-time applications. In addition, the difference equations for the convergence in the mean and mean square, and the closed form expressions for the steady-state estimation bias and MSE are also carried out. Finally, the simulation results are provided to confirm the theoretical analysis.
Journal: Signal Processing - Volume 88, Issue 2, February 2008, Pages 315–325