Opportunistic Spectrum Sharing in Cognitive Radio Networks
This Springer Brief investigates spectrum sharing with limited channel feedback in various cognitive radio systems, such as point-to-point, broadcast scheduling and ad-hoc networks. The design aim is to optimally allocate the secondary resources to improv
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Zhe Wang • Wei Zhang
Opportunistic Spectrum Sharing in Cognitive Radio Networks
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Zhe Wang The University of New South Wales Sydney New South Wales Australia
Wei Zhang The University of New South Wales Sydney New South Wales Australia
ISSN 2191-8112 ISSN 2191-8120 (electronic) SpringerBriefs in Electrical and Computer Engineering ISBN 978-3-319-15541-8 ISBN 978-3-319-15542-5 (eBook) DOI 10.1007/978-3-319-15542-5 Library of Congress Control Number: 2015933277 Springer Cham Heidelberg New York Dordrecht London © The Author(s) 2015 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
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Preface
Rapid growth of wireless communication services in recent decades has created a huge demand of radio spectrum. Spectrum scarcity and utilization inefficiency limit the development of wireless networks. Cognitive radio is a promising technology that allows secondary users to reuse the underutilized licensed spectrum of primary users. The major challenge for spectrum sharing is to achieve high spectrum efficiency while making non-intrusive access to the licensed bands. This requires information of availability and quality of channel resources at secondary transmitters, however, is difficult to be obtained perfectly in practice. Limited channel feedback, a few bits of channel state information sent from receiver to transmitter, provides a practical approach to detect spectrum opportunities and discover channel quality. This Springer Brief investigates spectrum sharing with limited channel feedback in various cognitive radio systems, i.e., point-to-point, broadcast scheduling and ad-hoc networks. The design aim is to optimally allocate the secondary resources so as to improve the throughput of secondary users while maintaining a certain quality of service of primary users. The analytica
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