Adaptive Filters and Equalisers

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1 Introduction.- 1.1 Adaptive Signal Processing.- 1.2 The Adaptive Filter.- 1.3 Modes of Operation.- 1.4 Application of Adaptive Filters.- 1.5 Summary.- 2 Adaptive Fir Filter Algorithms.- 2.1 Introduction.- 2.2 Optimum Linear Estimation.- 2.2.1 The Optimum FIR Filter.- 2.2.2 FIR System Identification.- 2.3 Sampled Matrix Inversion.- 2.4 Least Squares Estimation.- 2.4.1 Recursive Least Squares.- 2.4.2 Data Windows.- 2.4.3 Fast Algorithms.- 2.4.4 Properties of the Least Squares Estimate.- 2.5 Stochastic Gradient Methods.- 2.5.1 The Least Mean Squares Algorithm.- 2.5.2 The Block Least Mean Squares Algorithm.- 2.6 Self-Orthogonalising Algorithms.- 2.6.1 The Sliding DFT Adaptive Filter.- 2.7 Summary and Complexity Comparison.- 3 Performance Comparisons.- 3.1 Introduction.- 3.2 System Identification.- 3.3 Channel Equalisation.- 3.4 Summary and Conclusions.- 4 A Self-Orthogonalising Block Adaptive Filter.- 4.1 Introduction.- 4.2 Theoretical Development.- 4.2.1 Comparison of Theory with Simulation.- 4.3 A Practical Algorithm.- 4.4 Computational Complexity.- 4.5 Simulation Results.- 4.6 Conclusions.- 5 The Infinite Impulse Response Linear Equaliser.- 5.1 Introduction.- 5.2 The Linear Equaliser.- 5.2.1 Structure of an IIR Equaliser.- 5.3 FIR and IIR Equaliser Performance.- 5.4 System Identification.- 5.4.1 Adaptive IIR Solutions.- 5.5 Conclusions.- 6 An Adaptive IIR Equaliser.- 6.1 Introduction.- 6.2 The Kalman Filter.- 6.3 The Kalman Filter as an IIR Equaliser.- 6.4 An Adaptive Kalman Equaliser.- 6.4.1 System Identification.- 6.4.2 Model Uncertainty.- 6.4.3 Verification of Compensation Technique.- 6.4.4 Comparison with an RLS FIR Equaliser.- 6.4.5 Computational Complexity.- 6.5 RLS System Identification.- 6.6 Conclusions.- 7 Conclusions.- 7.1 Summary.- 7.2 Limitations and Further Work.- Appendix A The Fast Kalman Algorithm.- Appendix B The RLS Lattice Algorithm.- Appendix C Circular and Linear Convolution.- References.
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The work presented in this text relates to research work in the general area of adaptive filter theory and practice which has been carried out at the Department of Electrical Engineering, University of Edinburgh since 1977. Much of the earlier work in the department was devoted to looking at the problems associated with the physical implementation of these structures. This text relates to research which has been undertaken since 1984 which is more involved with the theoretical development of adaptive algorithms. The text sets out to provide a coherent framework within which general adaptive algorithms for finite impulse response adaptive filters may be evaluated. It further presents one approach to the problem of finding a stable solution to the infinite impulse response adaptive filter problem. This latter objective being restricted to the communications equaliser application area. The authors are indebted to a great number of people for their help, guidance and encouragement during the course of preparing this text. We should first express our appreciation for the support given by two successive heads of department at Edinburgh, Professor J. H. Collins and Professor J. Mavor. The work reported here could not have taken place without their support and also that of many colleagues, principally Professor P. M. Grant who must share much of the responsibility for instigating this line of research at Edinburgh.

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Autor: Colin F. Cowan
ISBN-13 :: 9781461289593
ISBN: 1461289599
Erscheinungsjahr: 05.10.2011
Verlag: Springer US
Gewicht: 334g
Seiten: 216
Sprache: Englisch
Auflage Softcover reprint of the original 1st ed. 1988
Sonstiges: Taschenbuch, 235x155x11 mm
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