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DSP-CIS Chapter-13: Least Mean Squares (LMS) Algorithm Marc Moonen Dept. E.E./ESAT-STADIUS, KU Leuven

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Presentation on theme: "DSP-CIS Chapter-13: Least Mean Squares (LMS) Algorithm Marc Moonen Dept. E.E./ESAT-STADIUS, KU Leuven"— Presentation transcript:

1 DSP-CIS Chapter-13: Least Mean Squares (LMS) Algorithm Marc Moonen Dept. E.E./ESAT-STADIUS, KU Leuven marc.moonen@esat.kuleuven.be www.esat.kuleuven.be/stadius/

2 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 2 Part-III : Optimal & Adaptive Filters : Optimal & Adaptive Filters - Intro General Set-Up Applications Optimal (Wiener) Filters – : Least Squares & Recursive Least Squares Estimation Least Squares Estimation Recursive Least Squares (RLS) Estimation Square-Root Algorithms – : Least Means Squares (LMS) Algorithm LMS/NLMS : Stochastic Gradient Algorithms LMS analysis LMS Family – : Fast Recursive Least Squares Algorithms : Kalman Filtering Chapter-11 Chapter-12 Chapter-13 Chapter-14 Chapter-15

3 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 3 Least Mean Squares (LMS) Algorithm

4 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 4 Least Mean Squares (LMS) Algorithm

5 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 5 Least Mean Squares (LMS) Algorithm (Widrow 1965 !!)

6 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 6 Least Mean Squares (LMS) Algorithm Bernard Widrow https://www.youtube.com/watch?v=hc2Zj55j1zU

7 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 7 Least Mean Squares (LMS) Algorithm

8 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 8 Least Mean Squares (LMS) Algorithm

9 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 9 Least Mean Squares (LMS) Algorithm  large λ_max implies a small stepsize

10 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 10 Least Mean Squares (LMS) Algorithm

11 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 11 Least Mean Squares (LMS) Algorithm error vector projected onto eigenvectors initial error vector projected onto eigenvectors (=projection on i-th eigenvector)  small λ_i implies slow convergence  λ_min <<λ_max (hence small μ) implies *very* slow convergence

12 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 12 Least Mean Squares (LMS) Algorithm

13 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 13 Least Mean Squares (LMS) Algorithm

14 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 14 Least Mean Squares (LMS) Algorithm

15 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 15 Least Mean Squares (LMS) Algorithm

16 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 16 Least Mean Squares (LMS) Algorithm

17 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 17 Least Mean Squares (LMS) Algorithm

18 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 18 Least Mean Squares (LMS) Algorithm

19 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 19 Least Mean Squares (LMS) Algorithm Skip this slide

20 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 20 Least Mean Squares (LMS) Algorithm Skip this slide

21 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 21 Least Mean Squares (LMS) Algorithm Skip this slide

22 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 22 Least Mean Squares (LMS) Algorithm Skip this slide

23 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 23 Least Mean Squares (LMS) Algorithm Skip this slide

24 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 24 Least Mean Squares (LMS) Algorithm Skip this slide

25 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 25 Least Mean Squares (LMS) Algorithm Skip this slide

26 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 26 Least Mean Squares (LMS) Algorithm Skip this slide

27 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 27 Least Mean Squares (LMS) Algorithm Skip this slide

28 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 28 Least Mean Squares (LMS) Algorithm Skip this slide

29 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 29 Least Mean Squares (LMS) Algorithm

30 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 30 Least Mean Squares (LMS) Algorithm

31 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 31 Least Mean Squares (LMS) Algorithm

32 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 32 Least Mean Squares (LMS) Algorithm

33 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 33 Least Mean Squares (LMS) Algorithm

34 DSP-CIS / Chapter-13 : Least Mean Squares (LMS) Algorithm / Version 2014-2015 p. 34 Least Mean Squares (LMS) Algorithm


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