Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. The most common wireless technologies use radio. With radio waves distances can be short‚ such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed‚ mobile‚ and portable applications‚ including two-way radios‚ cellular telephones‚ personal digital assistants
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CHAPTER 15 Wide-Area Wireless Networks (WANs) — GSM Evolution 15.1 Introduction Third-generation (3G) wireless systems [2‚3‚9] offer access to services anywhere from a single terminal; the old boundaries between telephony‚ information‚ and entertainment services are disappearing. Mobility is built into many of the services currently considered as fixed‚ especially in such areas as high speed access to the Internet‚ entertainment‚ information‚ and electronic commerce (e-commerce) services. The
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SASE has created an impressive scientific and technical infrastructure which includes Experimental Research Station for Structural control of Avalanches‚ Snow Chute for Avalanche Dynamics Modeling‚ Low Temperature Concrete Testing Facility‚ X-ray Micro tomography Facility‚ Radio based Remote Telemetry Systems‚ Remote Sensing Lab and MODIS Earth Receiving Station to name a few. A large area of Western Himalaya‚ comprising eleven major road axes and numerous tracks are being covered to forewarn the
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Rahnema © 2008 John Wiley & Sons‚ (Asia) Pte Ltd. ISBN: 978-0-470-82301-9 UMTS NETWORK PLANNING‚ OPTIMIZATION‚ AND INTER-OPERATION WITH GSM Moe Rahnema John Wiley & Sons (Asia) Pte Ltd Copyright ß 2008 John Wiley & Sons (Asia) Pte Ltd‚ 2 Clementi Loop‚ # 02-01‚ Singapore 129809 Visit our Home Page on www.wiley.com All Rights Reserved. No part of this publication may be reproduced‚ stored in a retrieval system or transmitted in any form or by any means‚ electronic‚ mechanical‚ photocopying
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SECURITY OF WIRELESS COMMUNICATIONS Introduction Wireless devices‚ like all technologies that provide external access to corporate networks‚ present security challenges. With wireless standards and practices still rapidly evolving‚ it is important to understand the strengths and limitations of available technologies in order to implement a secure solution. Extending current security policies to encompass wireless devices requires an understanding of the security features of both wireless devices and
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Wireless Network Security Jon P. McKinley mckinley_jon@hotmail.com TS3150 Fundamentals of Network Design Sunday‚ December 28‚ 2003 TABLE OF CONTENTS Introduction 3 The Wireless Market 5 Components of a wireless network 6 Wireless Security Mechanisms1 8 Categories of Attack 10 802.11 Attack Risks 12 Wireless risk mitigation 13 Summary 15 References 16 Introduction Wireless networks have grown in popularity. This is largely due to the increase in the value of a network
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Introduction Wireless is a term used to describe telecommunications in which electromagnetic waves (rather than some form of wire) carry the signal over part or the entire communication path. The first wireless transmitters went on the air in the early 20th century using radiotelegraphy (Morse code). Later‚ as modulation made it possible to transmit voices and music via wireless‚ the medium came to be called "radio." With the advent of television‚ fax‚ data communication‚ and the effective use of
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Wireless Fidelity ABSTRACT Wi-Fi‚ which stands for “Wireless Fidelity”‚ is a radio technology that networks computers so they connect to each other and to the internet without wires.It refers to wireless LAN products based on the IEEE 802.11b specification.Users can share documents and projects‚as well as an internet connection among various computer stations. A Wi-Fi network operates just like a wired network‚ without restrictions imposed by wires .Not only does it enable users to move around
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Introduction Wireless network is indicated to a telecommunication network whose interconnections between nodes are implemented without the use of wires‚ such a computer network. Nowadays‚ wireless network has become the important thing in telecommunication. This sort of technology has been used for over a century and remains synonymous with radio. In 19th century‚ Guglielmo Marconi invented a radio and made his made his mark in the world of wireless technology. At that moment‚ Marconi was about
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CHAPTER-1-INTRODUCTION 1. INTRODUCTION TO WIRELESS PC COMMUNICATION In many situations a communication link between two devices becomes essential. This communication can be wired or wireless. If two devices are close to each other a wired link is preferred. However in many situations two devices are reasonably far apart. In that case a wireless link is preferred. One of the popular wireless communication technologies is RF communication that is being used in our project. The HT12E and HT12D
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