| Preface | p. xiii |
| Acknowledgments | p. xvii |
| Introduction | p. 1 |
| Standardization and Frequency Bands | p. 4 |
| Multimedia Communications | p. 7 |
| The Need for High Data Rates | p. 8 |
| Services and Applications | p. 9 |
| Antennas and Batteries | p. 9 |
| Safety Considerations | p. 10 |
| ATM-Based Wireless (Mobile) Broadband Multimedia Systems | p. 12 |
| Multipath Propagation | p. 15 |
| Multipath Channel Models | p. 16 |
| Delay Spread Values | p. 17 |
| Time Variation of the Channel | p. 19 |
| History of OFDM | p. 20 |
| Preview of the Book | p. 24 |
| References | p. 25 |
| OFDM Basics | p. 33 |
| Introduction | p. 33 |
| Generation of Subcarriers using the IFFT | p. 33 |
| Guard Time and Cyclic Extension | p. 39 |
| Windowing | p. 42 |
| Choice of OFDM Parameters | p. 46 |
| OFDM Signal Processing | p. 47 |
| Implementation Complexity of OFDM Versus Single Carrier Modulation | p. 48 |
| References | p. 51 |
| Coding and Modulation | p. 53 |
| Introduction | p. 53 |
| Forward Error Correction Coding | p. 54 |
| Block Codes | p. 54 |
| Convolutional Codes | p. 55 |
| Concatenated Codes | p. 58 |
| Interleaving | p. 59 |
| Quadrature Amplitude Modulation | p. 60 |
| Coded Modulation | p. 62 |
| References | p. 70 |
| Synchronization | p. 73 |
| Introduction | p. 73 |
| Sensitivity to Phase Noise | p. 74 |
| Sensitivity to Frequency Offset | p. 77 |
| Sensitivity to Timing Errors | p. 78 |
| Synchronization using the Cyclic Extension | p. 80 |
| Synchronization using Special Training Symbols | p. 86 |
| Optimum Timing in the Presence of Multipat | p. 88 |
| References | p. 92 |
| Coherent and Differential Detection | p. 95 |
| Introduction | p. 95 |
| Coherent Detection | p. 95 |
| Two Dimensional Channel Estimators | p. 96 |
| One Dimensional Channel Estimators | p. 103 |
| Special Training Symbols | p. 104 |
| Decision Directed Channel Estimation | p. 106 |
| Differential Detection | p. 107 |
| Differential Detection in the Time Domain | p. 107 |
| Differential Detection in the Frequency Domain | p. 112 |
| Differential Amplitude and Phase Shift Keying | p. 115 |
| References | p. 117 |
| The Peak Power Problem | p. 119 |
| Introduction | p. 119 |
| Distribution of the Peak-to-Average Power Ratio | p. 120 |
| Clipping and Peak Windowing | p. 123 |
| Required Backoff with a Non-Ideal Power Amplifier | p. 127 |
| Coding and Scrambling | p. 130 |
| Peak Cancellation | p. 131 |
| PAP Reduction Codes | p. 138 |
| Generating Complementary Codes | p. 141 |
| Minimum Distance of Complementary Codes | p. 144 |
| Maximum Likelihood Decoding of Complementary Codes | p. 145 |
| Suboptimum Decoding of Complementary Codes | p. 147 |
| Large Code Lengths | p. 150 |
| SYMBOL Scrambling | p. 150 |
| References | p. 153 |
| Basics of CDMA | p. 155 |
| Introduction | p. 155 |
| CDMA: Past, Present, and Future | p. 156 |
| CDMA Concepts | p. 157 |
| Pure CDMA | p. 161 |
| Basic DS-CDMA Elements | p. 171 |
| RAKE Receiver | p. 171 |
| Power Control | p. 172 |
| Soft Handover | p. 173 |
| Interfrequency Handover | p. 175 |
| Multiuser Detection | p. 175 |
| References | p. 176 |
| Multi - Carrier CDMA | p. 179 |
| Introduction | p. 179 |
| Channel Model | p. 180 |
| DS-CDMA and MC-CDMA Systems | p. 182 |
| DS-CDMA System | p. 182 |
| MC-CDMA System | p. 185 |
| MC-CDMA System Design | p. 189 |
| BEP LOWER Bound | p. 194 |
| DS-CDMA System | p. 194 |
| MC-CDMA System | p. 195 |
| BEP Lower Bound Equivalence | p. 196 |
| Numerical Results | p. 197 |
| MC-CDMA System Design | p. 197 |
| Down - Link BEP Performance | p. 199 |
| Up - Link BER Performance | p. 203 |
| Conclusions | p. 206 |
| Appendix 8A | p. 208 |
| References | p. 209 |
| Orthogonal Frequency Division Multiple Access | p. 213 |
| Introduction | p. 213 |
| Frequency Hopping OFDMA | p. 213 |
| Differences between OFDMA and MC-CDMA | p. 215 |
| OFDMA System Description | p. 217 |
| Channel Coding | p. 220 |
| Modulation | p. 220 |
| Time and Frequency Synchronization | p. 221 |
| Initial Modulation Timing Synchronization | p. 221 |
| Initial Frequency Offset Synchronization | p. 222 |
| Synchronization Accuracy | p. 222 |
| Power Control | p. 223 |
| Random Frequency Hopping Operation | p. 224 |
| Dynamic Channel Allocation (Fast DCA) | p. 225 |
| Dynamic Channel Allocation (Simple DCA) | p. 227 |
| Capacity of OFDMA | p. 227 |
| Conclusions | p. 227 |
| References | p. 228 |
| Applications of OFDM | p. 229 |
| Introduction | p. 229 |
| Digital Audio Broadcasting | p. 229 |
| Terrestrial Digital Video Broadcasting | p. 231 |
| Magic WAND | p. 233 |
| Magic WAND Physical Layer | p. 234 |
| Coding | p. 236 |
| Simulated Error Probabilities | p. 236 |
| Effects of Clipping | p. 237 |
| Magic WAND Medium Access Control Layer | p. 238 |
| IEEE 802.11, HIPERLAN/2, and MMAC Wireless LAN Standards | p. 241 |
| OFDM Parameters | p. 243 |
| Channelization | p. 244 |
| OFDM Signal Processing | p. 245 |
| Training | p. 246 |
| Differences between IEEE 802.11, HIPERLAN/2 and MMAC | p. 249 |
| Simulation Results | p. 250 |
| References | p. 252 |
| About the Authors | p. 255 |
| Index | p. 257 |
| Table of Contents provided by Syndetics. All Rights Reserved. |
