Preface p. xi
Acknowledgements p. xiii
Abbreviations p. xv
Introduction p. 1
Introduction p. 1
UWB Basics p. 2
MIMO Principle p. 6
State-of-the-Art UWB-MIMO p. 10
Scope of This Book p. 13
Notation p. 15
UWB-MIMO Channel Measurement and Models p. 17
UWB-SISO Channel Model p. 18
Large-Scale Path-Loss Models p. 18
Small-Scale Fading Models p. 20
UWB-MIMO Channel Model p. 23
General Models p. 23
Correlation Property p. 24
Channel Measurement p. 29
Measurement Setup p. 29
Measured Results p. 30
Ray-Tracing Simulation Tool p. 32
Ray Tracing for Narrowband Systems p. 32
Ray Tracing for UWB Systems p. 35
Summary p. 42
UWB Channel Capacity p. 45
Introduction p. 45
System Model p. 46
Channel Capacity with Unknown CSI at the Transmitter p. 47
Channel Capacity with Known CSI at the Transmitter p. 51
The SISO Case p. 51
The MIMO Case p. 52
Special Case: SISO with Two Paths p. 54
Simulation Results p. 58
Channel Correlation p. 68
Measured Channel Capacity p. 69
Summary p. 71
UWB-MIMO Space-Time Coding p. 73
Intoduction p. 73
A Revisit of Alamouti Space-Time Coding for Narrowband Systems p. 74
Alamouti Space-Time Coding for UWB Systems p. 78
The 1S/2A Coding Scheme p. 78
The 2S/2A Coding Scheme p. 80
Simulation Results p. 82
General Space-Time Coding for UWB Systems p. 84
Performance of Antenna Selection p. 90
Spatio-Frequency Multiplexing in MB-OFDM-Based UWB Systems p. 93
Summary p. 98
UWB Beamforming and Localization p. 99
Introduction p. 99
Ideal UWB Impulse Beamforming p. 100
The Main Lobe Beamwidth of UWB Beamformers p. 102
Optimal Beamforming p. 104
Various Aspects of UWB Beamformers p. 106
UWB Localization p. 111
Beamforming Approach p. 113
More Than Two Beamformers p. 115
The BeamLoc Approach p. 117
NLOS Issue p. 119
NLOS Mitigation Based on a Priori Information p. 124
Multipath Issue p. 127
Summary p. 129
Distribution of Ranging Noise p. 130
Time-Reversal UWB Systems p. 135
Introduction p. 135
Motication for the Time-Reversal Approach in UWB Systems p. 137
Theoretical Basis p. 138
Simulation Results p. 140
Robustness of TR- and IC-Based Systems p. 142
Two Schemes of UWB MIMO TR Systems p. 145
Full TR Scheme p. 146
Diagonal TR Scheme p. 149
Pre-Equalizer Design for Spatial Multiplexing UWB SIMO TR Systems p. 151
System Description p. 151
Pre-Equalizer Design p. 152
Numerical Results p. 156
Antenna Selection for Time-Reversal UWB MIMO Systems p. 161
Impact of Channel Imperfection on UWB TR Systems p. 163
Channel Model p. 163
Analysis of UWB SISO TR Systems p. 165
Analysis of UWB MIMO TR Systems p. 175
MISO TR Multiuser Communications p. 179
Numerical Results p. 182
Summary p. 189
UWB Relay Systems p. 191
Introduction p. 191
UWB Relay Systems with SISO at Source and Destinaion p. 194
Coherent Detection Systems p. 194
Nonocherent Detection Systems p. 201
Numerical Results and Concluding Remarks p. 206
UWB Relay Systems with MIMO at Source and Destination p. 211
Channel and Systems Models p. 212
Receiver-CSI-Assisted Relay Systems p. 213
Transmitter-CSI-Assisted Relay Systems p. 222
Numerical Results and Discussion p. 225
Opportunities Relaying for UWB Systems p. 231
Summary p. 233
Derivations of cdfs and pdfs of J and J p. 234
Derivations of Equation (7.33) p. 237
The pdf of the End-to-End SNR per Bit for the DCF Relay System p. 237
References p. 239
Index p. 251