Towards location aware mobile ad hoc sensors A Systems Engineering Approach to Wireless Information Networks The Second Edition of this internationally respected textbook brings readers fully up to date with the myriad of developments in wireless communications. When first published in 1995, wireless communications was synonymous with cellular telephones. Now wireless information networks are the most important technology in all branches of telecommunications. Readers can learn about the latest applications in such areas as ad hoc sensor networks, home networking, and wireless positioning. Wireless Information Networks takes a systems engineering approach: technical topics are presented in the context of how they fit into the ongoing development of new systems and services, as well as the recent developments in national and international spectrum allocations and standards. The authors have organized the myriad of current and emerging wireless technologies into logical categories: * Introduction to Wireless Networks presents an up-to-the-moment discussion of the evolution of the cellular industry from analog cellular technology to 2G, 3G, and 4G, as well as the emergence of WLAN and WPAN as broadband ad hoc networks * Characteristics of Radio Propagation includes new coverage of channel modeling for space-time, MIMO, and UWB communications and wireless geolocation networks * Modem Design offers new descriptions of space-time coding, MIMO antenna systems, UWB communications, and multi-user detection and interference cancellation techniques used in CDMA networks * Network Access and System Aspects incorporates new chapters on UWB systems and RF geolocations, with a thorough revision of wireless access techniques and wireless systems and standards Exercises that focus on real-world problems are provided at the end of each chapter. The mix of assignments, which includes computer projects and questionnaires in addition to traditional problem sets, helps readers focus on key issues and develop the skills they need to solve actual engineering problems. Extensive references are provided for those readers who would like to explore particular topics in greater depth. With its emphasis on knowledge-building to solve problems, this is an excellent graduate-level textbook. Like the previous edition, this latest edition will also be a standard reference for the telecommunications industry.

Table of Contents:
Preface xi Part I Introduction to Wireless Networks 1 1 Overview of Wireless Networks 3 1.1 Introduction 3 1.2 Network Architecture and Design Issues 6 1.3 Key Trends in Wireless Networking 20 1.4 Outline of the Book 21 Questions 22 2 Evolution of the Wireless Industry 23 2.1 Introduction 23 2.2 Three Views of the Wireless Industry 29 2.3 Three Generations of Cellular Networks 32 2.4 Trends in Wireless Technologies 43 Questions 49 Part II Characteristics of Radio Propagation 51 3 Characterization of Radio Propagation 53 3.1 Introduction 53 3.2 Multipath Fading and the Distance–Power Relationship 55 3.3 Local Movements and Doppler Shift 64 3.4 Multipath for Wideband Signals 66 3.5 Classical Uncorrelated Scattering Model 72 3.6 Indoor and Urban Radio Propagation Modeling 81 Questions 86 Problems 87 Projects 89 4 Modeling and Simulation of Narrowband Signal Characteristics 93 4.1 Introduction 93 4.2 Modeling Path Loss and Slow Shadow Fading 96 4.3 Doppler Spectrum of Fast Envelope Fading 110 4.4 Statistical Behavior of Fast Envelope Fading 122 4.5 Simulation of Fast Envelope Fading 126 Questions 133 Problems 134 Projects 137 5 Measurement of Wideband and UWB Channel Characteristics 149 5.1 Introduction 149 5.2 Time-Domain Measurement Techniques 151 5.3 Frequency-Domain Measurement Techniques 171 5.4 Advances in Frequency-Domain Channel Measurement 180 Questions 197 Problems 198 Project 200 6 Modeling of Wideband Radio Channel Characteristics 205 6.1 Introduction 206 6.2 Wideband Time-Domain Statistical Modeling 208 6.3 Wideband Frequency-Domain Channel Modeling 234 6.4 Comparison Between Statistical Models 243 6.5 Ray-Tracing Algorithms 245 6.6 Direct Solution of Radio Propagation Equations 261 6.7 Comparison of Deterministic and Statistical Modeling 263 6.8 Site-Specific Statistical Model 265 Appendix 6A: GSM-Recommended Multipath Propagation Models 270 Appendix 6B: Wideband Multipath Propagation Models 272 Questions 274 Problems 275 Projects 277 Part III Modem Design 279 7 Narrowband Modem Technology 281 7.1 Introduction 282 7.2 Basic Modulation Techniques 284 7.3 Theoretical Limits and Practical Impairments 307 7.4 Traditional Modems for Wide-Area Wireless Networks 312 7.5 Other Aspects of Modem Implementation 328 Questions 335 Problems 336 Projects 338 8 Fading Diversity and Coding 341 8.1 Introduction 341 8.2 Radio Communication on Flat Rayleigh Fading Channels 343 8.3 Diversity Combining 347 8.4 Error-Control Coding for Wireless Channels 353 8.5 Space-Time Coding 363 8.6 MIMO and STC 365 Questions 372 Problems 372 Projects 374 9 Broadband Modem Technologies 377 9.1 Introduction 378 9.2 Effects of Frequency-Selective Multipath Fading 380 9.3 Discrete Multipath Fading Channel Model 384 9.4 Adaptive Discrete Matched Filter 389 9.5 Adaptive Equalization 393 9.6 Sectored Antennas 405 9.7 Multicarrier OFDM and Frequency Diversity 411 9.8 Comparison of Traditional Broadband Modems 421 9.9 MIMO in Frequency-Selective Fading 423 Appendix 9A: Analysis of the Equalizers 425 Questions 428 Problems 429 Projects 431 10 Spread-Spectrum and CDMA Technology 435 10.1 Introduction 435 10.2 Principles of Frequency-Hopping Spread Spectrum 439 10.3 Principles of Direct-Sequence Spread Spectrum 444 10.4 Interference in Spread-Spectrum Systems 464 10.5 Performance of CDMA Systems 476 Questions 494 Problems 495 Part IV Systems Aspects 499 11 Topology Medium Access and Performance 501 11.1 Introduction 501 11.2 Topologies for Local Networks 503 11.3 Cellular Topology for Wide-Area Networks 506 11.4 Centrally Controlled Assigned Access Methods 521 11.5 Distributed Contention-Based Access Control 537 Questions 572 Problems 573 Project 576 12 Ultrawideband Communications 581 12.1 Introduction 581 12.2 UWB Channel Characteristics 584 12.3 Impulse Radio and Time-Hopping Access 589 12.4 Direct-Sequence UWB 595 12.5 Multiband OFDM 599 Questions 603 Problems 604 13 RF Location Sensing 607 13.1 Introduction 607 13.2 RF Location-Sensing Techniques 611 13.3 Modeling The Behavior of RF Sensors 619 13.4 Wireless Positioning Algorithms 626 Questions 636 Problems 637 14 Wireless Optical Networks 639 14.1 Introduction 639 14.2 Implementation 641 14.3 Eye Safety 643 14.4 IR Channel Characterization and Data-Rate Limitations 644 14.5 Modulation Techniques for Optical Communications 653 14.6 Multiple Access and Data Rate 659 Questions 661 15 Systems and Standards 663 15.1 Introduction 663 15.2 GSM GPRS and EDGE 664 15.3 CDMA and HDR 674 15.4 Other Historical Systems 679 15.5 Wireless LANs 682 15.6 Speech Coding in Wireless Systems 685 Questions 687 References 689 Index 713 About the Authors 721