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Cover
Contents
Preface
Acknowledgments
Chapter 1 Introduction
Chapter 2 WLANs
Chapter 3 WPANs
Chapter 4 Appropriate Channel Model for OFDM Systems
Chapter 5 Basics of OFDM and Synchronization
Chapter 6 The Peak Power Problem
Chapter 7 A Novel Hybrid OFDM Concept
Chapter 8 A Practical OFDM System: Fixed Broadband Wireless Access (FBWA)
About the Author
Index
OFDM for Wireless Communications Systems
For a listing of recent titles in the Artech House Universal Personal Communications Series, turn to the back of this book.
OFDM for Wireless Communications Systems Ramjee Prasad Artech House, Inc. Boston • London www.artechhouse.com
Library of Congress Cataloging-in-Publication Data Prasad, Ramjee. OFDM for wireless communications systems / Ramjee Prasad. p. cm—(Artech House universal personal communications series) Includes bibliographical references and index. ISBN 1-58053-796-0 (alk. paper) 1. Wireless communication systems. 2. Multiplexing. 3. Orthogonalization methods. I. Title. II. Series. TK5103.2.P715 2004 621.382—dc22 2004053828 British Library Cataloguing in Publication Data Prasad, Ramjee. OFDM for wireless communications systems—(Artech House Universal Personal Communications series) 1. Wireless communication systems 2. Multiplexing I. Title 621.3’84 ISBN 1-58053-796-0 Cover design by Yekaterina Ratner © 2004 Ramjee Prasad All rights reserved. All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, includ- ing photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher. All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this informa- tion. Use of a term in this book should not be regarded as affecting the validity of any trade- mark or service mark. International Standard Book Number: 1-58053-796-0 10 9 8 7 6 5 4 3 2 1
To my and my wife Jyoti’s lovely granddaughters Sneha and Ruchika, whose innocent, smiling faces keep us energetic
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Contents Preface Acknowledgments CHAPTER 1 Introduction 1.1 Wireless Technology in the Future 1.1.1 WWANs 1.1.2 WLANs 1.1.3 WPANs 1.1.4 WB-PANs 1.1.5 The Next Generation 1.2 Orthogonal Frequency-Division Multiplexing 1.2.1 History of OFDM 1.3 Concluding Remarks References CHAPTER 2 WLANs 2.1 Introduction 2.1.1 WLANs in a Nutshell 2.1.2 IEEE 802.11, HIPERLAN/2, and MMAC WLAN Standards 2.2 MAC in WLAN Standards 2.2.1 IEEE 802.11 2.2.2 HIPERLAN/2 2.3 QoS over WLANs 2.3.1 IEEE 802.11e 2.3.2 Interframe Spacing 2.3.3 Other QoS-Related Developments 2.4 Security in IEEE 802.11 2.4.1 Current IEEE 802.11 2.4.2 IEEE 802.11i and IEEE 802.11f References Appendix 2A: ISM Bands xiii xv 1 1 3 4 5 6 7 11 11 14 16 19 19 21 23 27 27 31 33 33 35 36 36 36 39 43 46 vii
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