Author(s) : Xuemin Shen, Mohsen Guizani, Robert Caiming Qiu, Tho Le-Ngoc
Publisher : Wiley
Year : Feb 2006
ISBN 10 : 0470011440
ISBN 13 : 9780470011447
Language : English
Pages : 322
File type : PDF
Size : 2.8 MB

A UWB system is defined as any radio system that has a 10-dB bandwidth larger than 20 % of its center frequency, or has a 10-dB bandwidth equal to or larger than 500 MHz. The recent approval of UWB technology by Federal Communications Commission (FCC) of the United States reserves the unlicensed frequency band between 3.1 and 10.6 GHz (7.5 GHz) for indoor UWB wireless communication systems. It is expected that many conventional principles and approaches used for short-range wireless communications will be reevaluated and a new industrial sector in short-range (e.g., 10 m) wireless communications with high data rate (e.g., 400 Mbps) will be formed. Further, industrial standards IEEE 802.15.3a (high data rate) and IEEE 802.15.4a (very low data rate) based on UWB technology have been introduced.

UWB technology has many benefits owing to its ultra-wideband nature, which include high data rate, less path loss and better immunity to multipath propagation, availability of low-cost transceivers, low transmit power and low interference, and so on. On the other hand, there exist many technical challenges in UWB deployment, such as the received-waveform distortion from each distinct delayed propagation path, antenna design for and synchronization of very short pulses, performance degradation due to multiple access interference and narrowband jamming, employment of higher order modulation schemes to improve capacity or throughput, and development of link and network layers to take advantage of the UWB transmission benefits at the physical layer.

Even though R&D results so far have demonstrated that UWB radio is a promising solution for high-rate short-range wireless communications, further extensive investigation, experiments, and development are necessary for developing effective and efficient UWB communication systems and UWB technology. This book is timely in reporting the results from cutting edge research and state-of-the-art technology in UWB wireless communications.

Author(s) : Jim Geier
Publisher : Cisco Press
Year : Aug 2004
ISBN 10: 1587201119
ISBN 13: 9781587201110
Language : English
Pages : 264
File type : CHM
Size : 1.2 MB

As a basic introduction to wireless networking, Wireless Networks First-Step assumes that readers have no previous wireless experience. The book provides an overview of wireless networking, along with details of applicable standards and technologies. Newcomers to wireless technologies will find practical information along with an abundance of examples. Case studies throughout the chapters provide real-world implementation examples, presented in a non-technical fashion. Implementation details are discussed only to the extent that readers can identify what type of wireless network may be appropriate for their needs.

The intent of this book is to offer a basic introduction to wireless network applications, components, and technologies. These concepts provide a solid basis for understanding various wireless network topics in more detail. After reading this book, you'll be able to effectively continue a study of specific wireless networks.

This book was written for anyone beginning a study of wireless networks. There is no need for readers to have a technical background. CEOs, managers, and business owners will benefit from reading this book, as will engineers and technicians. Even users wanting to understand the inner workings of wireless networks will find this book interesting.

Author(s) : Kaveh Pahlavan, Allen H. Levesque
Publisher : Wiley
Year : Oct 2005
ISBN 10 : 0471725420
ISBN 13 : 9780471725428
Language : English
Pages : 738
File type : PDF
Size : 8.3 MB

That book presented wireless networking as the enabling communications technology of the 1990s and beyond. Now, only a decade later, mobile and portable telephones and wireless data services are a familiar part of our daily lives, as the twenty-first century witnesses widespread deployment of wireless networks, which has revolutionized the concept of communication and information processing for business, professional, and private applications. The field of wireless communications continues to experience unprecedented market growth, as evidenced by over 1.5 billion cellular telephone subscribers worldwide and the rapid increase in the size of the wireless local area network market for office, home, and public access applications.

The book is written from a systems engineering perspective, by which we mean that the various technical topics are presented in the context of ongoing development of specific new systems and services, as well as key recent developments in national and international spectrum allocations and standards.

Our method of presentation is to organize the myriad of emerging wireless technologies into logical categories that reflect the variety of perspectives that users have toward different networks and services. The book addresses the major segments of wireless technology: first-, second-, and third-generation wide-area cellular networks, wireless local area networks (WLANs), and wireless personal area networks (WPANs), with special attention to the emerging location-aware broadband wireless sensor and ad hoc networks. Although the book covers technology applicable to a wide range of wireless systems, as in the first edition, particular attention is given to indoor wireless communications, an area that is not treated in great depth in most other books.

This Official CWNA Study Guide is intended first to help prepare you to install, manage,
and support wireless networks, and second to prepare you to take and pass the CWNA
certification exam. As part of the CWNP Training and Certification program, the CWNA
certification picks up where other popular networking certification programs leave off:
wireless LANs.

Your study of wireless networking will help you bring together two fascinating worlds of
technology, because wireless networks are the culmination of Radio Frequency (RF) and
networking technologies. No study of wireless LANs would be complete without first
making sure the student understands the foundations of both RF and local area
networking fundamentals.

Author(s) : Holger Karl, Andreas Willig
Publisher : Wiley
Year : Apr 2005
ISBN 10 : 0470095105
ISBN 13 : 9780470095102
Language : English
Pages : 526
File type : PDF
Size : 11.5 MB

Protocols and Architectures for Wireless Sensor Networks provides a thorough description of the most important issues and questions that have to be addressed in a wireless sensor network. Wireless sensor networks combine current research trends from a number of different disciplines – hardware design, information & signal processing, and communication networks to name but a few. This single resource makes the crucial aspects of these research fields accessible to the reader. The authors give an overview of the current state-of-the-art and put all the individual solutions into perspective with each other.

This singular text provides academic researchers, graduate students in computer science, computer engineering, and electrical engineering, as well as practitioners in industry and research engineers, with an understanding of the specific design challenges and solutions for wireless sensor networks.

Author(s) : Savo Glisic
Publisher : Wiley
Year : Jun 2004
ISBN 10 : 0470867760
ISBN 13 : 9780470867761
Language : English
Pages : 878
File type : PDF
Size : 15.4 MB

At the present time, the wireless communications research community and industry are about to start discussions on standardization activities for the fourth generation (4G) of these systems. In the meantime, the research community has generated a number of promising solutions for significant improvements in system performance. Adaptive coding and modulation, iterative (turbo) decoding algorithms, space–time coding, multiple antennas and MIMO channels, multicarrier modulation, multiuser detection and ultra wideband radio are examples of enabling technologies for 4G.

The focus of the book is on the system elements that provide adaptability and reconfigurability, and discussion of how much these features can improve the system performance. At the same time, the book provides a solid overview of the conventional technologies, although this is not the focus of our discussion. The measure of performance is the reconfiguration efficiency defined as a ratio between the reconfiguration (signal to noise ratio) gain and the relative increase in complexity.

The content of this book is based on the results of the research community in the field of wireless communications across the globe, and a number of authors have been explicitly cited in the text. This by no means represents an exhaustive list of those whose work isbuilding up the enabling technology for 4G.

Defend against the latest pervasive and devastating wireless attacks using the tactical security information contained in this comprehensive volume. Hacking Exposed Wireless reveals how hackers zero in on susceptible networks and peripherals, gain access, and execute debilitating attacks. Find out how to plug security holes in Wi-Fi/802.11 and Bluetooth systems and devices. You'll also learn how to launch wireless exploits from Metasploit, employ bulletproof authentication and encryption, and sidestep insecure wireless hotspots. The book includes vital details on new, previously unpublished attacks alongside real-world countermeasures.



* Understand the concepts behind RF electronics, Wi-Fi/802.11, and Bluetooth
* Find out how hackers use NetStumbler, WiSPY, Kismet, KisMAC, and AiroPeek to target vulnerable wireless networks
* Defend against WEP key brute-force, aircrack, and traffic injection hacks
* Crack WEP at new speeds using Field Programmable Gate Arrays or your spare PS3 CPU cycles
* Prevent rogue AP and certificate authentication attacks
* Perform packet injection from Linux
* Launch DoS attacks using device driver-independent tools
* Exploit wireless device drivers using the Metasploit 3.0 Framework
* Identify and avoid malicious hotspots
* Deploy WPA/802.11i authentication and encryption using PEAP, FreeRADIUS, and WPA pre-shared keys

Author(s): David Tse, Pramod Viswanath
Publisher: Cambridge Press
Year: Jun 2005
ISBN: 0521845270
Language: English
Pages: 586
File type: PDF
Size (for download): 3.6 MB


This book aims to present modern wireless communication concepts in a coherent and unified manner and to illustrate the concepts in the broader context of the wireless systems on which they have been applied.

This book is written as a textbook for a first-year graduate course in wireless communication. The expected background is solid undergraduate/beginning graduate courses in signals and systems, probability and digital communication. This background is supplemented by the two appendices in the book. Appendix A summarizes some basic facts in vector detection and estimation in Gaussian noise which are used repeatedly throughout the book. Appendix B covers the underlying information theory behind the channel capacity results used in this book. Even though information theory has played a significant role in many of the recent developments in wireless communication, in the main text we only introduce capacity results in a heuristic manner and use them mainly to motivate communication concepts and techniques. No background in information theory is assumed. The appendix is intended for the reader who wants to have a more in-depth and unified understanding of the capacity results.

The more than 230 exercises form an integral part of the book. Working on at least some of them is essential in understanding the material. Most of them elaborate on concepts discussed in the main text. The exercises range from relatively straightforward derivations of results in the main text, to “back-of-envelope” calculations for actual wireless systems, to “get-your-hands-dirty” MATLAB types, and to reading exercises that point to current research literature. The small bibliographical notes at the end of each chapter provide pointers to literature that is very closely related to the material discussed in the book; we do not aim to exhaust the immense research literature related to the material covered here.

Author(s): Christian Gehrmann, Joakim Persson, Ben Smeets
Publisher: Artech House
Year: Jun 2004
ISBN: 1580535046
Language: English
File type: PDF
Pages: 221
Size (for download): 0.7 MB


This first-of-its-kind book, from expert authors actively contributing to the evolution of Bluetooth specifications, provides an overview and detailed descriptions of all the security functions and features of this standard’s latest core release. After categorizing all the security issues involved in ad hoc networking, this hands-on volume shows you how to design a highly secure Bluetooth system and implement security enhancements. The book also helps you fully understand the main security risks involved with introducing Bluetooth-based communications in your organization.

This cutting-edge resource examines all known attacks on Bluetooth security mechanisms and their implementations, demonstrating how some of these known weaknesses can be avoided with appropriate defensive measures. The book presents concrete examples of how to design security solutions for some Bluetooth applications and products built on these applications. You find real-world case studies including technical algorithms, mechanisms and protocols, and security architectures. These architectures offer valuable guidelines for use in building Bluetooth and non-Bluetooth-specific security mechanisms.


TABLE OF CONTENT:
Chapter 01 - Introduction
Chapter 02 - Overview Of The Bluetooth Security Architecture
Chapter 03 - Bluetooth Pairing And Key Management
Chapter 04 - Algorithms
Chapter 05 - Broadcast Encryption
Chapter 06 - Security Policies and Access Controls
Chapter 07 - Attacks, Strengths And Weaknesses
Chapter 08 - Providing Anonymity
Chapter 09 - Key Management Extensions
Chapter 10 - Security For Bluetooth Application

Written by leading authority Ramjee Prasad, this timely new work offers a complete understanding of OFDM technology and applications in wireless communications systems, placing emphasis on wireless LANs and PANs. OFDM is a key technology for beyond 3G communications, promising robust, high capacity, high speed wireless broadband multimedia networks. In this practical resource, established and new technologies are explained clearly and comprehensively, from OFDM basics to a detailed account of a new technique, hybrid OFDM CDMA slow frequency hopping.

About the Author
Ramjee Prasad is director of the Center for Teleinfrastruktur (CTIF), Aalborg University. He is the coauthor of Technology Trends in Wireless Communications, WLANs and WPANs towards 4G Wireless, Simulation and Software Radio for Mobile Communications, and OFDM for Wireless Multimedia Communications (Artech House, 2003, 2003, 2002, 2000), co-editor of Wireless IP and Building the Mobile Internet and WCDMA: Towards IP Mobility and Mobile Internet (Artech House, 2003, 2001), and is the author/co-author of several other books published by Artech House.