کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
564558 | 875619 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of low frequency noise in adaptive estimation using the LMS algorithm
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
پردازش سیگنال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Influence of low frequency noise in adaptive estimation using the LMS algorithm Influence of low frequency noise in adaptive estimation using the LMS algorithm](/preview/png/564558.png)
چکیده انگلیسی
Adaptive systems are employed in the cancelation of noises and estimation of periodic and quasiperiodic signals. Amongst these signals are the electrocardiogram (ECG), impedance cardiography (ZCG), brain evoked potentials and modulated signals in telecommunication applications. In this paper we study the behavior of the weights of the LMS algorithm when used to estimate the coefficients of the discrete Fourier transform (DFT) of a signal under influence of low frequencies. We show theoretically that low frequency noise affects the estimation of the weights at higher frequencies. The simulation results obtained are in agreement with theoretical results. Moreover, we exemplify the problem with impedance cardiography (ZCG) signals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 89, Issue 5, May 2009, Pages 933–940
Journal: Signal Processing - Volume 89, Issue 5, May 2009, Pages 933–940
نویسندگان
D.S. Brito, Enio Aguiar, Fausto Lucena, R.C.S. Freire, Yoshifumi Yasuda, A.K. Barros,