Fundamentals of WiMAX

Cover......Page 1
Praise for Fundamentals of WiMAX......Page 2
Contents......Page 12
Foreword......Page 20
Organization of the Book......Page 22
Acknowledgments......Page 24
About the Authors......Page 28
Overview of WiMAX......Page 30
1 Introduction to Broadband Wireless......Page 32
1.1 Evolution of Broadband Wireless......Page 34
1.2 Fixed Broadband Wireless: Market Drivers and Applications......Page 39
1.3 Mobile Broadband Wireless: Market Drivers and Applications......Page 41
1.4 WiMAX and Other Broadband Wireless Technologies......Page 42
1.5 Spectrum Options for Broadband Wireless......Page 46
1.6 Business Challenges for Broadband Wireless and WiMAX......Page 50
1.7 Technical Challenges for Broadband Wireless......Page 52
1.9 Bibliography......Page 61
2.1 Background on IEEE 802.16 and WiMAX......Page 62
2.2 Salient Features of WiMAX......Page 66
2.3 WiMAX Physical Layer......Page 68
2.4 MAC-Layer Overview......Page 76
2.5 Advanced Features for Performance Enhancements......Page 84
2.6 Reference Network Architecture......Page 86
2.7 Performance Characterization......Page 88
2.8 Summary and Conclusions......Page 90
2.9 Bibliography......Page 92
Technical Foundations of WiMAX......Page 94
3 The Challenge of Broadband Wireless Channels......Page 96
3.1 Communication System Building Blocks......Page 97
3.2 The Broadband Wireless Channel: Pathloss and Shadowing......Page 98
3.3 Cellular Systems......Page 106
3.4 The Broadband Wireless Channel: Fading......Page 113
3.5 Modeling Broadband Fading Channels......Page 120
3.6 Mitigation of Fading......Page 133
3.8 Bibliography......Page 139
4 Orthogonal Frequency Division Multiplexing......Page 142
4.1 Multicarrier Modulation......Page 143
4.2 OFDM Basics......Page 146
4.3 An Example: OFDM in WiMAX......Page 152
4.4 Timing and Frequency Synchronization......Page 153
4.5 The Peak-to-Average Ratio......Page 160
4.6 OFDM’s Computational Complexity Advantage......Page 171
4.7 Simulating OFDM Systems......Page 173
4.9 Bibliography......Page 174
5 Multiple-Antenna Techniques......Page 178
5.1 The Benefits of Spatial Diversity......Page 179
5.2 Receive Diversity......Page 183
5.3 Transmit Diversity......Page 186
5.4 Beamforming......Page 198
5.5 Spatial Multiplexing......Page 203
5.6 Shortcomings of Classical MIMO Theory......Page 210
5.7 Channel Estimation for MIMO-OFDM......Page 213
5.8 Channel Feedback......Page 218
5.9 Advanced Techniques for MIMO......Page 219
5.10 Summary and Conclusions......Page 221
5.11 Bibliography......Page 223
6 Orthogonal Frequency Division Multiple Access......Page 228
6.1 Multiple-Access Strategies for OFDM......Page 229
6.2 Multiuser Diversity and Adaptive Modulation......Page 233
6.3 Resource-Allocation Techniques for OFDMA......Page 238
6.4 OFDMA in WiMAX: Protocols and Challenges......Page 245
6.5 Summary and Conclusions......Page 248
6.6 Bibliography......Page 249
7 Networking and Services Aspects of Broadband Wireless......Page 252
7.1 Quality of Service......Page 253
7.2 Multimedia Session Management......Page 262
7.3 Security......Page 270
7.4 Mobility Management......Page 278
7.5 IP for Wireless: Issues and Potential Solutions......Page 289
7.6 Summary and Conclusions......Page 294
7.7 Bibliography......Page 295
Understanding WiMAX and Its Performance......Page 298
8 PHY Layer of WiMAX......Page 300
8.1 Channel Coding......Page 301
8.2 Hybrid-ARQ......Page 307
8.3 Interleaving......Page 308
8.5 OFDM Symbol Structure......Page 309
8.6 Subchannel and Subcarrier Permutations......Page 311
8.7 Slot and Frame Structure......Page 319
8.8 Transmit Diversity and MIMO......Page 321
8.9 Closed-Loop MIMO......Page 325
8.10 Ranging......Page 329
8.11 Power Control......Page 331
8.12 Channel-Quality Measurements......Page 332
8.14 Bibliography......Page 333
9 MAC Layer of WiMAX......Page 336
9.1 Convergence Sublayer......Page 338
9.2 MAC PDU Construction and Transmission......Page 341
9.3 Bandwidth Request and Allocation......Page 345
9.4 Quality of Service......Page 346
9.5 Network Entry and Initialization......Page 348
9.6 Power-Saving Operations......Page 353
9.7 Mobility Management......Page 356
9.8 Summary and Conclusions......Page 361
9.9 Bibliography......Page 362
10 WiMAX Network Architecture......Page 364
10.1 General Design Principles of the Architecture......Page 365
10.2 Network Reference Model......Page 366
10.3 Protocol Layering Across a WiMAX Network......Page 370
10.5 IP Address Assignment......Page 373
10.6 Authentication and Security Architecture......Page 374
10.7 Quality-of-Service Architecture......Page 378
10.8 Mobility Management......Page 381
10.9 Radio Resource Management......Page 388
10.10 Paging and Idle-Mode Operation......Page 389
10.12 Bibliography......Page 391
11 Link-Level Performance of WiMAX......Page 394
11.1 Methodology for Link-Level Simulation......Page 395
11.2 AWGN Channel Performance of WiMAX......Page 399
11.3 Fading Channel Performance of WiMAX......Page 402
11.4 Benefits of Multiple-Antenna Techniques in WiMAX......Page 416
11.5 Advanced Receiver Structures and Their Benefits for WiMAX......Page 425
11.6 Summary and Conclusions......Page 427
11.7 Bibliography......Page 428
12 System-Level Performance of WiMAX......Page 430
12.1 Wireless Channel Modeling......Page 431
12.2 Methodology for System-Level Simulation......Page 433
12.3 System-Level Simulation Results......Page 441
12.4 Summary and Conclusions......Page 450
12.5 Appendix: Propagation Models......Page 451
12.6 Bibliography......Page 456
Acronyms......Page 458
Index......Page 468