Details

<p>Preface xi</p> <p>Acknowledgements xiii</p> <p>Abbreviations xv</p> <p><b>1 Introduction 1</b></p> <p>1.1 Introduction 1</p> <p>1.2 UWB Basics 2</p> <p>1.3 MIMO Principle 6</p> <p>1.4 State-of-the-Art UWB-MIMO 10</p> <p>1.5 Scope of This Book 13</p> <p>1.6 Notation 15</p> <p><b>2 UWB-MIMO Channel Measurement and Models 17</b></p> <p>2.1 UWB-SISO Channel Model 18</p> <p>2.1.1 Large-Scale Path-Loss Models 18</p> <p>2.1.2 Small-Scale Fading Models 20</p> <p>2.2 UWB-MIMO Channel Model 23</p> <p>2.2.1 General Models 23</p> <p>2.2.2 Correlation Property 24</p> <p>2.3 Channel Measurement 29</p> <p>2.3.1 Measurement Setup 29</p> <p>2.3.2 Measured Results 30</p> <p>2.4 Ray-Tracing Simulation Tool 32</p> <p>2.4.1 Ray Tracing for Narrowband Systems 32</p> <p>2.4.2 Ray Tracing for UWB Systems 35</p> <p>2.5 Summary 42</p> <p><b>3 UWB Channel Capacity 45</b></p> <p>3.1 Introduction 45</p> <p>3.2 System Model 46</p> <p>3.3 Channel Capacity with Unknown CSI at the Transmitter 47</p> <p>3.4 Channel Capacity with Known CSI at the Transmitter 51</p> <p>3.4.1 The SISO Case 51</p> <p>3.4.2 The MIMO Case 52</p> <p>3.5 Special Case: SISO with Two Paths 54</p> <p>3.6 Simulation Results 58</p> <p>3.7 Channel Correlation 68</p> <p>3.8 Measured Channel Capacity 69</p> <p>3.9 Summary 71</p> <p><b>4 UWB-MIMO Space–Time Coding 73</b></p> <p>4.1 Introduction 73</p> <p>4.2 A Revisit of Alamouti Space–Time Coding for Narrowband Systems 74</p> <p>4.3 Alamouti Space–Time Coding for UWB Systems 78</p> <p>4.3.1 The 1S/2A Coding Scheme 78</p> <p>4.3.2 The 2S/2A Coding Scheme 80</p> <p>4.3.3 Simulation Results 82</p> <p>4.4 General Space–Time Coding for UWB Systems 84</p> <p>4.5 Performance of Antenna Selection 90</p> <p>4.6 Spatio-Frequency Multiplexing in MB-OFDM-Based UWB Systems 93</p> <p>4.7 Summary 98</p> <p><b>5 UWB Beamforming and Localization 99</b></p> <p>5.1 Introduction 99</p> <p>5.2 Ideal UWB Impulse Beamforming 100</p> <p>5.3 The Main Lobe Beamwidth of UWB Beamformers 102</p> <p>5.4 Optimal Beamforming 104</p> <p>5.5 Various Aspects of UWB Beamformers 106</p> <p>5.6 UWB Localization 111</p> <p>5.6.1 Beamforming Approach 113</p> <p>5.6.2 More Than Two Beamformers 115</p> <p>5.6.3 The BeamLoc Approach 117</p> <p>5.7 NLOS Issue 119</p> <p>5.7.1 NLOS Mitigation Based on a Priori Information 124</p> <p>5.8 Multipath Issue 127</p> <p>5.9 Summary 129</p> <p>Appendix 5.A Distribution of Ranging Noise 130</p> <p><b>6 Time-Reversal UWB Systems 135</b></p> <p>6.1 Introduction 135</p> <p>6.2 Motivation for the Time-Reversal Approach in UWB Systems 137</p> <p>6.2.1 Theoretical Basis 138</p> <p>6.2.2 Simulation Results 140</p> <p>6.2.3 Robustness of TR- and IC-Based Systems 142</p> <p>6.3 Two Schemes of UWB MIMO TR Systems 145</p> <p>6.3.1 Full TR Scheme 146</p> <p>6.3.2 Diagonal TR Scheme 149</p> <p>6.4 Pre-Equalizer Design for Spatial Multiplexing UWB SIMO TR Systems 151</p> <p>6.4.1 System Description 151</p> <p>6.4.2 Pre-Equalizer Design 152</p> <p>6.4.3 Numerical Results 156</p> <p>6.5 Antenna Selection for Time-Reversal UWB MIMO Systems 161</p> <p>6.6 Impact of Channel Imperfection on UWB TR Systems 163</p> <p>6.6.1 Channel Model 163</p> <p>6.6.2 Analysis of UWB SISO TR Systems 165</p> <p>6.6.3 Analysis of UWB MIMO TR Systems 175</p> <p>6.6.4 MISO TR Multiuser Communications 179</p> <p>6.6.5 Numerical Results 182</p> <p>6.7 Summary 189</p> <p><b>7 UWB Relay Systems 191</b></p> <p>7.1 Introduction 191</p> <p>7.2 UWB Relay Systems with SISO at Source and Destination 194</p> <p>7.2.1 Coherent Detection Systems 194</p> <p>7.2.2 Noncoherent Detection Systems 201</p> <p>7.2.3 Numerical Results and Concluding Remarks 206</p> <p>7.3 UWB Relay Systems with MIMO at Source and Destination 211</p> <p>7.3.1 Channel and System Models 212</p> <p>7.3.2 Receiver-CSI-Assisted Relay Systems 213</p> <p>7.3.3 Transmitter-CSI-Assisted Relay Systems 222</p> <p>7.3.4 Numerical Results and Discussion 225</p> <p>7.4 Opportunistic Relaying for UWB Systems 231</p> <p>7.5 Summary 233</p> <p>Appendix 7.A Derivations of cdfs and pdfs of J and J_ 234</p> <p>Appendix 7.B Derivation of Equation (7.33) 237</p> <p>Appendix 7.C The pdf of the End-to-End SNR per Bit for the DCF Relay</p> <p>System 237</p> <p>References 239</p> <p>Index 251</p>

<p><strong>Professor Thomas Kaiser, Leibniz University of Hannover, Germany</strong><br />Professor Kaiser is the leader of the Institute of Communication Technology at the Leibniz University of Hannover, Germany, and is the founder and CEO of the spin-off company mimoOn GmbH. At mimoOn GmbH, he leads the scientific team to transfer the cutting edge signal processing algorithms combined with the up-to-date hardware, especially those for MIMO, into real products. Kaiser received the Ph.D. degree in 1995 with distinction and the German habilitation degree in 2000, both from Gerhard-Mercator-University, Duisburg, and in electrical engineering. <p><strong>Professor Feng Zheng, Leibniz University of Hannover, Germany</strong><br />Professor Zheng received the Ph.D. degree in automatic control in 1993 from Beijing University of Aeronautics and Astronautics, Beijing. He is now with Leibniz University of Hannover. He held Associate Professor at Chinese Academy of Sciences during 1995-1998 and Alexander-von-Humboldt Research Fellowship at University of Duisburg during 1999-2000. His research results on system and control theory are widely cited. From 2002, he has switched his research interests to signal processing, wireless communications and networks, especially on UWB and MIMO. He is one of the co-authors of the first paper on the channel capacity of UWB-MIMO systems.

<b>Up-to-date coverage of the cutting-edge research on UWB Systems with Multiple Antennas</b> <p> In this book, the authors investigate the benefits of combining UWB and MIMO technologies; highlighting five aspects of this promising research field: channel capacity, space-time coding, beamforming and localization, time-reversal transmission, and UWB-MIMO relay. The book presents a systematic and in-depth discussion for each of the hot topics, providing an insight into the cutting-edge research currently undertaken. It is expected that the ideas and approaches illustrated in this book will inspire sparks for the emerging technologies in short-range high data-rate wireless communications and other related applications.</p> <p><i>Key Features:</i></p> <p>•Provides a thorough coverage combining the UWB and MIMO, outlining the opportunities and benefits created by the combination of these technologies</p> <p>•Highlights five aspects of this promising research field: channel capacity, space-time coding, beamforming and localization, time-reversal transmission, and UWB-MIMO relay</p> <p>•Covers UWB-MIMO channel measurement and models</p> <p>This book will serve as an invaluable reference for academic and professional researchers in wireless communications, and graduate students. Engineers and technical professionals will also find the book insightful.</p>

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