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W-CDMA
MOBILE COMMUNICATIONS SYSTEM
W-CDMA: Mobile Communications System.
Edited by Keiji Tachikawa
Copyright
2002 John Wiley & Sons, Ltd.
ISBN: 0-470-84761-1
W-CDMA: Mobile Communications System.
Edited by Keiji Tachikawa
Copyright
2002 John Wiley & Sons, Ltd.
ISBN: 0-470-84761-1
W-CDMA: Mobile Communications System.
Edited by Keiji Tachikawa
Copyright
2002 John Wiley & Sons, Ltd.
ISBN: 0-470-84761-1
W-CDMA Mobile
Communications System
Supervising Editor: Keiji Tachikawa
NTT DoCoMo became the first in the world to launch a next-generation mobile phone
service that enables large-capacity communications. The W-CDMA mobile communica-
tions technology, known as one of the third-generation standard, was adopted to realize
this high-speed, high-quality service. This volume, the fruit of collective efforts made
by engineers engaged in R&D at NTT DoCoMo, is a standard technical documentation
describing the basic technologies that constitute the W-CDMA mobile communications
system in detail and individual systems that are expected to play an important role in
future implementations.
W-CDMA
MOBILE COMMUNICATIONS SYSTEM
Edited by
Keiji Tachikawa
NTT DoCoMo, Inc.,
Japan
Copyright 2002 John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester,
West Sussex PO19 8SQ, England
Telephone (+44) 1243 779777
Email (for orders and customer service enquiries): cs-books@wiley.co.uk
Visit our Home Page on www.wileyeurope.com or 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, recording, scanning or
otherwise, except under the terms of the Copyright, Designs and Patents Act 1988 or under the terms of a
licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham C ourt Road, London W1T 4LP, UK,
without the permission in writing of the Publisher. Requests to the Publisher should be addressed to the
Permissions Department, John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex PO19
8SQ, England, or emailed to permreq@wiley.co.uk, or faxed to (+44) 1243 770571.
This publication is designed to provide accurate and authoritative information in regard to the subject matter
covered. It is sold on the understanding that the Publisher is not engaged in rendering professional services.
If professional advice or other expert assistance is required, the services of a competent professional should
be sought.
Other Wiley Editorial Offices
John Wiley & Sons Inc., 111 River Street, Hoboken, NJ 07030, USA
Jossey-Bass, 989 Market Street, San Francisco, CA 94103-1741, USA
Wiley-VCH Verlag GmbH, Boschstr. 12, D-69469 Weinheim, Germany
John Wiley & Sons Australia Ltd, 33 Park Road, Milton, Queensland 4064, Australia
John Wiley & Sons (Asia) Pte Ltd, 2 Clementi Loop #02-01, Jin Xing Distripark, Singapore 129809
John Wiley & Sons Canada Ltd, 22 Worcester Road, Etobicoke, Ontario, Canada M9W 1L1
British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library
ISBN 0-470-84761-1
Typeset in 10/12pt Times by Laserwords Private Limited, Chennai, India
Printed and bound in Great Britain by TJ International, Padstow, Cornwall
This book is printed on acid-free paper responsibly manufactured from sustainable forestry
in which at least two trees are planted for each one used for paper production.
Contents
Editorial Board xi
Supervisor’s Note xiii
Preface xv
1 Overview 1
Keisuke Suwa, Yoshiyuki Yasuda and Hitoshi Yoshino
1.1 Generation Change in Cellular Systems 1
1.1.1 Analog Cellular Systems 1
1.1.2 Digital Cellular Systems 3
1.1.3 Mobile Internet Services 7
1.2 Overview of IMT-2000 10
1.2.1 Objectives of IMT-2000 10
1.2.2 IMT-2000 Standardization 11
1.2.3 IMT-2000 Frequency Band 18
References 19
2 Radio Transmission Systems 21
Mamoru Sawahashi
2.1 Direct Sequence Code Division Multiple Access (DS-CDMA) 21
2.1.1 Principles of DS-CDMA 21
2.1.2 Spreading Code and Spreading Code Synchronization 24
2.1.3 Configuration o f Radio Transmitter and Receiver 26
2.1.4 Application of DS-CDMA to Cellular Systems 27
2.2 Basic W-CDMA Transmission Technologies 28
2.2.1 Two-Layer Spreading Code Assignment and Spreading Modulation 28
2.2.2 Cell Search 31
2.2.3 Random Access 41
2.2.4 Technologies that Satisfy Various Quality Requirements in Multirate
Transmissions 42
2.2.5 Diversity 49
2.3 Link Capacity Expansion Technologies in W-CDMA 66
2.3.1 Interference Canceller 66
2.3.2 Adaptive Antenna Array Diversity 71
References 77
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