The only book that provides full coverage of UWB multiband OFDM technology

Ultra-wideband (UWB) has emerged as a technology that offers great promise to satisfy the growing demand for low-cost, high-speed digital networks. The enormous bandwidth available, the potential for high data rates, and the promise for small size and low processing power with reduced implementation cost all present a unique opportunity for UWB to become a widely adopted radio solution for future wireless home networking technology.

Ultra-Wideband Communications Systems is the first book to provide comprehensive coverage of the fundamental and advanced issues related to UWB technology, with a particular focus on multiband orthogonal frequency division multiplexing (multiband OFDM). The multiband OFDM approach was a leading method in the IEEE 802.15.3astandard and has recently been standardized by ECMA International. The book also explores several major advanced state-of-the-art technologies to enhance the performance of the standardized multiband OFDM approach. Additional coverage includes:
* Characteristics of UWB channels
* An overview of UWB single-band and multiband OFDM approaches
* MIMO multiband OFDM
* Performance characterization
* Performance under practical considerations
* Differential multiband OFDM
* Power-controlled channel allocation
* Cooperative UWB multiband OFDM

Complete with pointers for future research opportunities to enhance the performance of UWB multiband OFDM technology over current and future wireless networks, this is an indispensable resource for graduate students, engineers, and academic and industrial researchers involved with UWB.

W. Pam Siriwongpairat, PhD, is a Wireless Communications Specialist with Meteor Communications Corporation. From January to May 2006, she was a research associate in the Department of Electrical and Computer Engineering and Institute for Systems Research at the University of Maryland, College Park. Her current research interests span a broad range of areas from digital signal processing to wirelesscommunications and networking, including ultra-wideband communications, space-time-frequency coding for multi-antenna communications, cross-layer design for wireless networks, communications in mobile ad hoc networks and wireless sensor networks, OFDM systems, and software-defined radio and cognitive radio technologies.

K. J. Ray Liu, PhD, is Professor and Associate Chair for Graduate Studies and Research of Electrical and Computer Engineering Department at the University of Maryland, College Park. Dr. Liu is the recipient of numerous honors and awards including best paper awards from IEEE Signal Processing Society (twice), IEEE Vehicular Technology Society, and EURASIP, as well as recognitions from the University of Maryland including university-level Distinguished Scholar-Teacher Award, Invention of the Year Award, and college-level Poole and Kent Company Senior Faculty Teaching Award.

The only book that provides full coverage of UWB multiband OFDM technology

Ultra-wideband (UWB) has emerged as a technology that offers great promise to satisfy the growing demand for low-cost, high-speed digital networks. The enormous bandwidth available, the potential for high data rates, and the promise for small size and low processing power with reduced implementation cost all present a unique opportunity for UWB to become a widely adopted radio solution for future wireless home networking technology.

Ultra-Wideband Communications Systems is the first book to provide comprehensive coverage of the fundamental and advanced issues related to UWB technology, with a particular focus on multiband orthogonal frequency division multiplexing (multiband OFDM). The multiband OFDM approach was a leading method in the IEEE 802.15.3astandard and has recently been standardized by ECMA International. The book also explores several major advanced state-of-the-art technologies to enhance the performance of the standardized multiband OFDM approach. Additional coverage includes:

• Characteristics of UWB channels

• An overview of UWB single-band and multiband OFDM approaches

• MIMO multiband OFDM

• Performance characterization

• Performance under practical considerations

• Differential multiband OFDM

• Power-controlled channel allocation

• Cooperative UWB multiband OFDM

Complete with pointers for future research opportunities to enhance the performance of UWB multiband OFDM technology over current and future wireless networks, this is an indispensable resource for graduate students, engineers, and academic and industrial researchers involved with UWB.

Inhalt

Preface xiii

Chapter 1 Introduction 1

1.1 Overview of UWB 1

1.2 Advantages of UWB 3

1.3 UWB Applications 4

1.4 UWB Transmission Schemes 5

1.5 Challenges for UWB 7

Chapter 2 Channel Characteristics 9

2.1 Large-Scale Models 10

2.1.1 Path Loss Models 10

2.1.2 Shadowing 11

2.2 Small-Scale Models 12

2.2.1 Tap-Delay-Line Fading Model 13

2.2.2 K Model 14

2.2.3 SalehValenzuela Model 15

2.2.4 Standard UWB Channel Model 16

Chapter 3 UWB: Single-Band Approaches 19

3.1 Overview of Single-Band Approaches 20

3.2 Modulation Techniques 21

3.2.1 Pulse Amplitude Modulation 21

3.2.2 OnOff Keying 22

3.2.3 Phase Shift Keying 22

3.2.4 Pulse Position Modulation 23

3.3 Multiple Access Techniques 23

3.3.1 Time-Hopping UWB 24

3.3.2 Direct-Sequence UWB 25

3.4 Demodulation Techniques 26

3.4.1 Received Signal Model 26

3.4.2 Correlation Receiver 27

3.4.3 RAKE Receiver 28

3.5 MIMO Single-Band UWB 30

3.5.1 MIMO SpaceTime-Coded Systems 30

3.5.2 SpaceTime-Coded UWB Systems 32