Ultra-Wideband stands poised to replace any current wireless technology and revolutionize even the SOHO market.
° UWB is a revolutionary wireless technology for transmitting digital data over a wide spectrum of frequency bands with very low power
° Aggressive commercialization efforts of UWB technology are currently in progress
° Describes essentials of Ultra-wideband (UWB) communications systems as well as its target markets such as military, entertainment, and automotive industries
- Copyright 2006
- Edition: 1st
- ISBN-10: 0-13-146326-8
- ISBN-13: 978-0-13-146326-4
The Easy-to-Understand, Up-to-the-Minute Guide to UWB Technologies, Applications, and Markets
Ultra-wideband's exceptional capacity and power characteristics make it one of this generation's most exciting technologies. From wireless communications to entertainment, and from the automotive industry to homeland security, UWB is poised to revolutionize an extraordinary array of applications. Now, one of the field's leading experts presents the most accessible and up-to-date UWB guidebook ever written.
Dr. Faranak Nekoogar explains UWB principles and technologies simply and clearly, addressing key issues such as pulse generation, modulation, multiple access techniques, and interference. In addition, she presents a complete market analysis--identifying the most promising applications, initial and future markets, and regulatory trends.
Ultra-Wideband Communications: Fundamentals and Applications will be indispensable for everyone interested in UWB technology, regardless of their radio frequency experience: engineers, managers, marketers, analysts, purchasing agents, business strategists, journalists, and students alike.
Inside you will find
- An introduction to UWB: history, background, advantages, and challenges
- How UWB compares to narrowband and spread-spectrum wideband systems
- Fundamentals of UWB short-pulse generation and propagation
- Competing single-band and multiband approaches
- UWB antenna concepts and their implications for systems and networks
- Popular modulation/demodulation schemes and multiple-access techniques
- Coexistence with today's WLAN, GPS, and cellular phone systems
- Current and evolving FCC and worldwide regulation of UWB technology
- In-depth coverage of UWB applications and markets, with adoption timelines and forecasts through 2010
- A comprehensive, easy-to-understand glossary and extensive references for further reading
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Table of Contents
About the Author.
1. Introduction to Ultra-Wideband Communications.
History and Background
Differences Between UWB and Spread Spectrum
Single Band vs. Multiband
The Regulatory Situation
FCC Emission Limits
2. UWB Sources and Antennas.
UWB Pulse Generation
3. Pulse-Detection and Multiple-Access Techniques.
Conventional Pulse-Detection Techniques
Pulse Modulation and Detection Techniques
UWB Multiple-Access Techniques
4. Interference Issues.
Interference Effects on IEEE 802.11a/b WLANs
Interference to GPS Receivers
Interference to Cellular Systems
5. Applications and Target Markets.
Initial Mass Market Opportunities
Driving CE, PC, and Mobile Industry Convergence
Existing Potential Markets
Target Consumer Electronics Products
Target PC-Oriented Markets
UWB in Consumer Electronics Devices
UWB for PC-Oriented Applications
Future Mass Market
Additional and Niche Markets
UWB Market Players
Appendix A: Theoretical Derivations of UWB Interference Effects on Existing Radio Systems.
802.11a/b WLAN Systems
CDMA-Based Cellular Systems
Ultra-wideband (UWB) radios are expected to play a revolutionary role in the future
of wireless communications systems. The great interest in UWB communications was
sparked by FCC rulings in February 2002 that authorized the unlicensed commercial
deployment of UWB technology under a strict power control in 7500 MHz of spectrum.
This fast-emerging technology uses extremely narrow and low-power RF pulses to
transmit and receive information. Using short-duration pulses as the basic building
block of communication results in exceptionally attractive features as well as
unique technical challenges.This book provides a comprehensive introduction to
UWB communications systems in a simple and easy-to-understand language. It covers
the fundamentals of short pulse generation and propagation, regulatory issues,
concerns about UWB interference, and UWB applications and potential target markets.
The following items characterize the book.
- Detailed discussion of the fundamentals of UWB technology, short-pulse generation,
UWB antennas, UWB modulation and multiple-access techniques, as well as UWB
- Comparative analysis of UWB, narrowband, and spread-spectrum wideband communication
systems, emphasizing the strengths and weaknesses of UWB technology compared
to traditional continuous-wave wireless communications techniques.
- Full description of the interference issues relating to the coexistence
of UWB systems with narrowband and wideband spread-spectrum communications
systems, such as IEEE 802.11a/b wireless local area networks (WLANs), the
Global Positioning System (GPS), and cellular phones.
- Coverage of FCC regulations for UWB communications systems in the United
States, as well as worldwide regulatory efforts.
- Identification of UWB's potential target markets, such as military, entertainment,
and automotive industries, including comprehensive market research and analysis
on this promising technology.
- Comprehensive bibliographies at the end of each chapter to help readers
delve further into the concepts discussed in the book.
- A concise glossary of all technical terms used throughout the book, which
enables readers with minimal or no background in RF principles to benefit
from this book.
is written for a broad range of readers.
The simple language and full coverage of the technology makes this book a complete
reference for individuals new to the field of UWB communications and for nontechnical
readers, as well as a good study aid for undergraduate students so that they
can better understand more technical textbooks. In addition, managers, marketers,
analysts, purchasing agents, journalists, continuing education students, and
engineers new to the field can all benefit from reading this book.
The book is organized in the following fashion:
- Chapter 1 provides a comprehensive overview of UWB communications by covering
its history and background. We discuss the concepts behind UWB communications
as well as UWB's advantages and challenges. In this chapter, we explain in
great detail the difference between UWB and spread-spectrum communications,
and we examine the strengths and weaknesses of UWB compared to narrowband
and spread-spectrum wideband communications. Chapter 1 covers the single-band
and multiband approaches that are the two leading UWB techniques under consideration
for IEEE standardization. This chapter also addresses current FCC and worldwide
regulatory efforts for the commercialization of UWB. Finally, the chapter
concludes with a brief discussion of UWB applications.
- Chapter 2 concentrates on UWB pulse-generation techniques. In simple language,
we introduce the concepts of pulse generation using step recovery diodes (SRDs)
and drift step recovery diodes (DSRDs), as well as pulse shaping techniques.
The chapter also presents a detailed discussion of UWB antenna concepts, including
system and network considerations.
- Chapter 3 focuses on the advantages and disadvantages of several modulation/demodulation
schemes used for UWB pulse detection. The modulation techniques covered are
on-off keying (OOK), pulse-amplitude modulation (PAM), pulse-position modulation
(PPM), bi-phase modulation, and transmitted-reference (TR) modulation. The
chapter also discusses the concepts behind energy detectors and classical
matched filters (CMF), which are the basis for most pulse-detection techniques.
Chapter 3 further explains UWB multiple-access techniques based on each modulation
technique, as well as time-hopping and delay-hopping concepts to avoid catastrophic
collisions in multiuser channels.
- Chapter 4 examines the interference issues of UWB systems to existing narrowband
and wideband radio services. Specific cases of UWB interference to IEEE 802.11a/b
WLANs, GPS, and cellular phones are discussed thoroughly in terms of the UWB
transmitter density that can degrade the performance of each radio service
to a harmful level.
- Chapter 5 provides a detailed and quantitative look at some key UWB applications
of widespread interest in the entertainment, military and government, as well
as automotive, industries. This chapter identifies the initial, existing,
and future target markets for UWB in the commercial sector and offers a full
market analysis in terms of UWB speed-to-market advantages, the technology's
adaptation timeline, as well as market projections and forecasts for UWB products
up to the year 2010.
- Appendix A adds an in-depth theoretical analysis of UWB interference issues
on WLAN, GPS, and cellular systems to complement the discussion in Chapter
4, especially for readers interested in theoretical derivations of formulas
used for interference analysis.
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