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A. H. Sayed, Fundamentals of Adaptive Filtering, Wiley, NJ, 2003. Recipient of 2005 Frederick E. Terman Award

Description:

This graduate-level textbook offers a comprehensive and up-to-date treatment of adaptive filtering; a vast and fast-moving field. The book is logically organized, specific in its presentation of each topic, and far-reaching in scope. Throughout the presentation, special emphasis is placed on geometric constructions, energy conservation arguments, system-theoretic arguments, and linear algebraic formulations.

The textbook offers a fresh, broad, and systematic treatment of of the field; it illustrates extensive commonalities that exist among different classes of adaptive algorithms and even among different filtering theories. The book also provides a uniform treatment of the subject matter, addressing some existing limitations, providing additional insights, and detailing extensions of current theory.

The book is designed to be self-contained, with careful attention given to appendices, problems, examples, and a variety of practical computer projects. The bibliography is up-to-date with extensive commentaries on how the contributions relate to each other in time and in context.

Each chapter includes concepts that reinforce the principles covered, bibliographic notes for further study, numerous problems that vary in difficulty and applications, computer projects that illustrate real-life applications, and several helpful appendices.

MATLAB programs that solve all computer projects are avaliable for download by all readers from the publisher’s website. The computer projects feature topics such as linear and decision feedback equalization, channel estimation, beamforming, tracking of fading channels, line and acoustic echo cancellation, active noise control, OFDM receivers, CDMA receivers, and even finite precision effects.

A complete solutions manual for all problems in the book is available to instructors upon request.

Chapters:

1. Optimal Estimation. 2. Linear Estimation. 3. Constrained Linear Estimation. 4. Steepest-Descent Algorithms. 5. Stochastic-Gradient Algorithms. 6. Steady-State Performance of Adaptive Filters. 7. Tracking Performance of Adaptive Filters. 8. Finite-Precision Effects. 9. Transient Performance of Adaptive Filters. 10. Block Adaptive Filters. 11. The Least-Squares Criterion. 12. Recursive Least-Squares. 13. RLS Array Algorithms. 14. Fast Fixed-Order Filters. 15. Lattice Filters. 16. Laguerre Adaptive Filters. 17. Robust Adaptive Filters.

About the Author:

A. H. Sayed is Professor of Electrical Engineering at UCLA. He is a Fellow of IEEE for his contributions to adaptive filtering and estimation algorithms.

Preface:

The preface explains the distinctive features of the treatment, including the special roles played by geometric constructions, energy conservation arguments, system-theoretic arguments, uniformity, and extensive new material not covered elsewhere. The book can be used to design different course offerings according to instructor needs in terms of breadth and depth of coverage.

Preface and Acknowledgments.

Notation and Symbols.

BACKGROUND MATERIAL.

A. Random Variables.

A.1 Variance of a Random Variable.

A.2 Dependent Random Variables.

A.3 Complex-Valued Random Variables.

A.4 Vector-Valued Random Variables.

A.5 Gaussian Random Vectors.

B. Linear Algebra.

B.1 Hermitian and Positive-Definite Matrices.

B.2 Range Spaces and Nullspaces of Matrices.

B.3 Schur Complements.

B.4 Cholesky Factorization.

B.5 QR Decomposition.

B.6 Singular Value Decomposition.

B.7 Kronecker Products.

C. Complex Gradients.

C.1 Cauchy-Riemann Conditions.

C.2 Scalar Arguments.

C.3 Vector Arguments.

PART I: OPTIMAL ESTIMATION.

1. Scalar-Valued Data.

1.1 Estimation Without Observations.

1.2 Estimation Given Dependent Observations.

1.3 Orthogonality Principle.

1.4 Gaussian Random Variables.

2. Vector-Valued Data.

2.1 Optimal Estimator in the Vector Case.

2.2 Spherically Invariant Gaussian Variables.

2.3 Equivalent Optimization Criterion.

Summary and Notes.

Problems and Computer Projects.

PART II: LINEAR ESTIMATION.

3. Normal Equations.

3.1 Mean-Square Error Criterion.

3.2 Minimization by Differentiation.

3.3 Minimization by Completion-of-Squares.

3.4 Minimization of the Error Covariance Matrix.

3.5 Optimal Linear Estimator.

4. Orthogonality Principle.

4.1 Design Examples.

4.2 Orthogonality Condition.

4.3 Existence of Solutions.

4.4 Nonzero-Mean Variables.

5. Linear Models.

5.1 Estimation using Linear Relations.

5.2 Application: Channel Estimation.

5.3 Application: Block Data Estimation.

5.4 Application: Linear Channel Equalization.

5.5 Application: Multiple-Antenna Receivers.

6. Constrained Estimation.

6.1 Minimum-Variance Unbiased Estimation.

6.2 Example: Mean Estimation.

6.3 Application: Channel and Noise Estimation.

6.4 Application: Decision Feedback Equalization.

6.5 Application: Antenna Beamforming.

7. Kalman Filter.

7.1 Innovations Process.

7.2 State-Space Model.

7.3 Recursion for the State Estimator.

7.4 Computing the Gain Matrix.

7.5 Riccati Recursion.

7.6 Covariance Form.

7.7 Measurement and Time-Update Form.

Summary and Notes.

Problems and Computer Projects.

PART III: STOCHASTIC GRADIENT ALGORITHMS.

8. Steepest-Descent Technique.

8.1 Linear Estimation Problem.

8.2 Steepest-Descent Method.

8.3 More General Cost Functions.

9. Transient Behavior.

9.1 Modes of Convergence.

9.2 Optimal Step-Size.

9.3 Weight-Error Vector Convergence.

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9.4 Time Constants.

9.5 Learning Curve.

9.6 Contour Curves of the Error Surface.

9.7 Iteration-Dependent Step-Sizes.

9.8 Newton?s Method.

10. LMS Algorithm.

10.1 Motivation.

10.2 Instantaneous Approximation.

10.3 Computational Cost.

10.4 Least-Perturbation Property.

10.5 Application: Adaptive Channel Estimation.

10.6 Application: Adaptive Channel Equalization.

10.7 Application: Decision-Feedback Equalization.

10.8 Ensemble-Average Learning Curves.

11. Normalized LMS Algorithm.

11.1 Instantaneous Approximation.

11.2 Computational Cost.

11.3 Power Normalization.

11.4 Least-Perturbation Property.

12. Other LMS-Type Algorithms.

12.1 Non-Blind Algorithms.

12.2 Blind Algorithms.

12.3 Some Properties.

13. Affine Projection Algorithm.

13.1 Instantaneous Approximation.

13.2 Computational Cost.

13.3 Least-Perturbation Property.

13.4 Affine Projection Interpretation.

14. RLS Algorithm.

14.1 Instantaneous Approximation.

14.2 Computational Cost.

Summary and Notes.

Problems and Computer Projects.

PART IV: MEAN-SQUARE PERFORMANCE.

15. Energy Conservation.

15.1 Performance Measure.

15.2 Stationary Data Model.

15.3 Energy Conservation Relation.

15.4 Variance Relation.

15.A Interpretations of the Energy Relation.

16. Performance of LMS.

16.1 Variance Relation.

16.2 Small Step-Sizes.

16.3 Separation Principle.

16.4 White Gaussian Input.

16.5 Statement of Results.

16.6 Simulation Results.

17. Performance of NLMS.

17.1 Separation Principle.

17.2 Simulation Results.

17.A Relating NLMS to LMS.

18. Performance of Sign-Error LMS.

18.1 Real-Valued Data.

18.2 Complex-Valued Data.

18.3 Simulation Results.

19. Performance of RLS and Other Filters.

19.1 Performance of RLS.

19.2 Performance of Other Filters.

19.3 Performance Table for Small Step-Sizes.

20. Nonstationary Environments.

20.1 Motivation.

Solution

20.2 Nonstationary Data Model.

20.3 Energy Conservation Relation.

20.4 Variance Relation.

21. Tracking Performance.

21.1 Performance of LMS.

21.2 Performance of NLMS.

21.3 Performance of Sign-Error LMS.

21.4 Performance of RLS.

21.5 Comparison of Tracking Performance.

21.6 Comparing RLS and LMS.

21.7 Performance of Other Filters.

21.8 Performance Table for Small Step-Sizes.

Summary and Notes.

Problems and Computer Projects.

PART V: TRANSIENT PERFORMANCE.

22. Weighted Energy Conservation.

22.1 Data Model.

22.2 Data-Normalized Adaptive Filters.

22.3 Weighted Energy Conservation Relation.

22.4 Weighted Variance Relation.

23. LMS with Gaussian Regressors.

23.1 Mean and Variance Relations.

23.2 Mean Behavior.

23.3 Mean-Square Behavior.

23.4 Mean-Square Stability.

23.5 Steady-State Performance.

23.6 Small Step-Size Approximations.

23.A Convergence Time.

24. LMS with non-Gaussian Regressors.

24.1 Mean and Variance Relations.

24.2 Mean-Square Stability and Performance.

24.3 Small Step-Size Approximations.

24.A Independence and Averaging Analysis.

25. Data-Normalized Filters.

25.1 NLMS Filter.

25.2 Data-Normalized Filters.

25.A Stability Bound.

25.B Stability of NLMS.

Summary and Notes.

Problems and Computer Projects.

PART VI: BLOCK ADAPTIVE FILTERS.

26. Transform Domain Adaptive Filters.

26.1 Transform-Domain Filters.

26.2 DFT-Domain LMS.

26.3 DCT-Domain LMS.

26.A DCT-Transformed Regressors.

27. Efficient Block Convolution.

27.1 Motivation.

27.2 Block Data Formulation.

27.3 Block Convolution.

28. Block and Subband Adaptive Filters.

28.1 DFT Block Adaptive Filters.

28.2 Subband Adaptive Filters.

28.A Another Constrained DFT Block Filter.

28.B Overlap-Add Block Adaptive Filters.

Summary and Notes.

Problems and Computer Projects.

PART VII: LEAST-SQUARES METHODS.

29. Least-Squares Criterion.

29.1 Least-Squares Problem.

29.2 Geometric Argument.

29.3 Algebraic Arguments.

29.4 Properties of Least-Squares Solution.

29.5 Projection Matrices.

29.6 Weighted Least-Squares.

29.7 Regularized Least-Squares.

29.8 Weighted Regularized Least-Squares.

30. Recursive Least-Squares.

30.1 Motivation.

30.2 RLS Algorithm.

30.3 Regularization.

30.4 Conversion Factor.

30.5 Time-Update of the Minimum Cost.

30.6 Exponentially-Weighted RLS Algorithm.

31. Kalman Filtering and RLS.

31.1 Equivalence in Linear Estimation.

31.2 Kalman Filtering and Recursive Least-Squares.

31.A Extended RLS Algorithms.

32. Order and Time-Update Relations.

32.1 Backward Order-Update Relations.

32.2 Forward Order-Update Relations.

32.3 Time-Update Relation.

Summary and Notes.

Problems and Computer Projects.

PART VIII: ARRAY ALGORITHMS.

33. Norm and Angle Preservation.

33.1 Some Difficulties.

33.2 Square-Root Factors.

33.3 Norm and Angle Preservation.

33.4 Motivation for Array Methods.

34. Unitary Transformations.

34.1 Givens Rotations.

34.2 Householder Transformations.

35. QR and Inverse QR Algorithms.

35.1 Inverse QR Algorithm.

35.2 QR Algorithm.

35.3 Extended QR Algorithm.

35.A Array Algorithms for Kalman Filtering.

Summary and Notes.

Problems and Computer Projects.

PART IX: FAST RLS ALGORITHMS.

36. Hyperbolic Rotations.

36.1 Hyperbolic Givens Rotations.

36.2 Hyperbolic Householder Transformations.

36.3 Hyperbolic Basis Rotations.

37. Fast Array Algorithm.

37.1 Time-Update of the Gain Vector.

37.2 Time-Update of the Conversion Factor.

37.3 Initial Conditions.

37.4 Array Algorithm.

37.A Chandrasekhar Filter.

38. Regularized Prediction Problems.

38.1 Regularized Backward Prediction.

38.2 Regularized Forward Prediction.

38.3 Low-Rank Factorization.

39. Fast Fixed-Order Filters.

39.1 Fast Transversal Filter.

39.2 FAEST Filter.

39.3 Fast Kalman Filter.

39.4 Stability Issues.

Summary and Notes.

Problems and Computer Projects.

PART X: LATTICE FILTERS.

40. Three Basic Estimation Problems.

40.1 Motivation for Lattice Filters.

40.2 Joint Process Estimation.

40.3 Backward Estimation Problem.

40.4 Forward Estimation Problem.

40.5 Time and Order-Update Relations.

41. Lattice Filter Algorithms.

41.1 Significance of Data Structure.

41.2 A Posteriori-Based Lattice Filter.

41.3 A Priori-Based Lattice Filter.

42. Error-Feedback Lattice Filters.

42.1 A Priori Error-Feedback Lattice Filter.

42.2 A Posteriori Error-Feedback Lattice Filter.

42.3 Normalized Lattice Filter.

43. Array Lattice Filters.

43.1 Order-Update of Output Estimation Errors.

43.2 Order-Update of Backward Estimation Errors.

43.3 Order-Update of Forward Estimation Errors.

43.4 Significance of Data Structure.

Summary and Notes.

Problems and Computer Projects.

PART XI: ROBUST FILTERS.

44. Indefinite Least-Squares.

44.1 Indefinite Least-Squares.

44.2 Recursive Minimization Algorithm.

44.3 Time-Update of the Minimum Cost.

44.4 Singular Weighting Matrices.

44.A Stationary Points.

44.B Inertia Conditions.

45. Robust Adaptive Filters.

45.1 A Posteriori-Based Robust Filters.

45.2 ε-NLMS Algorithm.

45.3 A Priori-Based Robust Filters.

45.4 LMS Algorithm.

45.A H1 Filters.

46. Robustness Properties.

46.1 Robustness of LMS.

46.2 Robustness of εNLMS.

46.3 Robustness of RLS.

Summary and Notes.

Problems and Computer Projects.

REFERENCES AND INDICES.

References.

Author Index.

Subject Index.