This book provides an excellent reference for all professionals
working in the area of array signal processing and its applications
in wireless communications.
Wideband beamforming has advanced with the increasing bandwidth
in wireless communications and the development of ultra wideband
(UWB) technology.
In this book, the authors address the fundamentals and most
recent developments in the field of wideband beamforming. The book
provides a thorough coverage of the subject including major
sub-areas such as sub-band adaptive beamforming, frequency
invariant beamforming, blind wideband beamforming, beamforming
without temporal processing, and beamforming for multi-path
signals.
Key Features:
* Unique book focusing on wideband beamforming
* Discusses a hot topic coinciding with the increasing bandwidth
in wireless communications and the development of UWB
technology
* Addresses the general concept of beamforming including fixed
beamformers and adaptive beamformers
* Covers advanced topics including sub-band adaptive beamforming,
frequency invariant beamforming, blind wideband beamforming,
beamforming without temporal processing, and beamforming for
multi-path signals
* Includes various design examples and corresponding complexity
analyses
This book provides a reference for engineers and researchers in
wireless communications and signal processing fields. Postgraduate
students studying signal processing will also find this book of
interest.
Autorentext
Dr. Wei Liu, University of Sheffield, UK Dr Liu received his B.Sc. in Space Physics (1996) and L.L.B in Intellectual Property Law (1997) from Peking University, China; M.Phil. in Filter Banks and Wavelets from the Department of Electrical and Electronic Engineering, University of Hong Kong (2001); PhD in Digital Beamforming from the Communications Research Group, School of Electronics and Computer Science, University of Southampton (2003). He then worked as a postdoc in the same group and later in the Communications and Signal Processing Group, Department of Electrical and Electronic Engineering, Imperial College London, where he moved to the area of blind source separation. In September 2005, Dr Liu joined the Communications Research Group, Department of Electronic and Electrical Engineering, University of Sheffield, as a lecturer.
Dr. Stephan Weiss, University of Strathclyde, Scotland Dr Weiss received the degree of Diplom-Ingenieur in Electronic & Electrical Engineering from the University of Erlangen-Nürnberg in 1995, and the PhD in the same subject from the University of Strathclyde in 1998. Interrupted by a leave in 1996/97 as a visiting scholar at the Signal and Image Processing Institute, University of Southern California, he was a research student in the Signal Processing Division, University of Strathclyde. He held a visiting lectureship in the EEE Department at Strathclyde in 1998/99, and joined the Communications Research Group of the Electronics and Computer Science Department at the University of Southampton as a lecturer in 1999. He was promoted to a senior lecturership at University of Strathclyde in 2003.
Klappentext
This book provides an excellent reference for all professionals working in the area of array signal processing and its applications in wireless communications.
Wideband beamforming has advanced with the increasing bandwidth in wireless communications and the development of ultra wideband (UWB) technology.
In this book, the authors address the fundamentals and most recent developments in the field of wideband beamforming. The book provides a thorough coverage of the subject including major sub-areas such as sub-band adaptive beamforming, frequency invariant beamforming, blind wideband beamforming, beamforming without temporal processing, and beamforming for multi-path signals.
Key Features:
- Unique book focusing on wideband beamforming
- Discusses a hot topic coinciding with the increasing bandwidth in wireless communications and the development of UWB technology
- Addresses the general concept of beamforming including fixed beamformers and adaptive beamformers
- Covers advanced topics including sub-band adaptive beamforming, frequency invariant beamforming, blind wideband beamforming, beamforming without temporal processing, and beamforming for multi-path signals
- Includes various design examples and corresponding complexity analyses
This book provides a reference for engineers and researchers in wireless communications and signal processing fields. Postgraduate students studying signal processing will also find this book of interest.
Inhalt
About the Series Editors vii
Preface xiii
1 Introduction 1
1.1 Array Signal Processing 1
1.2 Narrowband Beamforming 4
1.3 Wideband Beamforming 7
1.4 Wideband Beam Steering 11
1.4.1 Beam Steering for Narrowband Arrays 12
1.4.2 Beam Steering for Wideband Arrays 13
1.4.3 A Unified Interpretation 17
1.5 Summary 18
2 Adaptive Wideband Beamforming 19
2.1 Reference Signal-Based Beamformer 19
2.1.1 Least Mean Square Algorithm 20
2.1.2 Normalized Least Mean Square Algorithm 22
2.1.3 Recursive Least Squares Algorithm 23
2.1.4 Comparison of Computational Complexities 24
2.1.5 Frequency-Domain and Subband Adaptive Algorithms 26
2.1.6 Simulations 26
2.2 Linearly Constrained Minimum Variance Beamforming 28
2.2.1 A Simple Formulation of Constraints 29
2.2.2 Optimum Solution to the LCMV Problem 30
2.2.3 Frost's Algorithm for LCMV Beamforming 31
2.2.4 Simulations 31
2.3 Constraints Design for LCMV Beamforming 33
2.3.1 Eigenvector Constraint Design 33
2.3.2 Design Example 35
2.3.3 Application to Wideband DOA Estimation 36
2.4 Generalized Sidelobe Canceller 38
2.4.1 GSC Structure 38
2.4.2 GSC with Tapped Delay-Lines 42
2.4.3 Blocking Matrix Design 46
2.4.4 Simulations 48
2.5 Other Minimum Variance Beamformers 48
2.5.1 Soft Constrained Minimum Variance Beamformer 49
2.5.2 Correlation Constrained Minimum Variance Beamformer 51
2.6 Robust Adaptive Beamforming 52
2.6.1 Spatially Extended Constraints 52
2.6.2 Norm-Restrained Approaches 57
2.7 Summary 60
3 Subband Adaptive Beamforming 61
3.1 Fundamentals of Filter Banks 61
3.1.1 Basic Multirate Operations 62
3.1.2 Perfect Reconstruction Condition for Filter Banks 66
3.1.3 Oversampled Modulated Filter Banks 68
3.2 Subband Adaptive Filtering 70
3.3 General Subband Adaptive Beamforming 74
3.3.1 Reference Signal Based Beamformer 75
3.3.2 Generalized Sidelobe Canceller 76
3.3.3 Reconstruction of the Fullband Beamformer 79
3.3.4 Simulations 79
3.4 Subband Adaptive GSC 82
3.4.1 Structure 82
3.4.2 Analysis of the Computational Complexity 82
3.4.3 Reconstruction of the Fullband Beamformer 83
3.4.4 Simulations 83
3.5 Temporally/Spatially Subband-Selective Beamforming 84
3.5.1 Partially Adaptive GSC 85
3.5.2 Temporally/Spatially Subband-Selective Blocking Matrix 87
3.5.3 Temporally/Spatially Subband-Selective Transformation Matrix 95
3.5.4 Application to Subband Adaptive GSC 98
3.5.5 Extension to the General Subband Adaptive Beamforming Structure 100
3.5.6 Simulations 103
3.6 Frequency-Domain Adaptive Beamforming 105
3.6.1 Frequency-Domain Formulation 106
3.6.2 Constrained Frequency-Domain Adaptive Algorithm 108
3.6.3 Frequency-…