OFDM for Wireless
Communications Systems
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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
.
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
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