Communication Systems 4Th Edition Simon Haykin 通信系统

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Communication Systems 4Th Edition Simon Haykin 通信系统
COMMUNICATION SYSTEMS 4↓ TH EDITION COMMUNICATION SYSTEMS TH EDITION Simon Haykin McMaster University JoHN WILEY SoNS, INC. New York a Chichester s Weinheim s Brisbane a Singapore E Toronto editor Bill zobrist Marketing Manager Katherine Hepburn Associate production director Lucille buonocore Senior production editor Monique calello over designer Madelyn Lesure Illustration Coordinator Gene aiello Wellington Studios Cover photo nasa/photo Researchers, Inc. This book was set in 10/12 Times Roman by UG/GGS Information Services, Inc and printed and bound by Hamilton Printing ComPany. The cover was printed by Phoenix Color Corporation. This book is printed on acid-free paper. oo) The paper in this book was manufactured by a mill whose forest management programs include sustained yield harvesting of its timberlands. St dd yield harvesting principles ensure that the numbers of trees cut each year does not exceed the amount of new growth Copyright 2001, John Wiley Sons, Inc. 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 as permitted under Sections 107 or 1089 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (508)750-8400, fax 08)750-4470 Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley Sons, Inc, 605 Third Avenue, New York, NY 10158-0012,(212)850-6011,fax(212)850-6008,EMai:PERMREO@Wiley.coM To order books or for customer service call 1-800-CALL-WILEY(225-5945 Library of Congress Cataloging-in-Publication Data Haykin, Simon Communication systems/Simon Haykin.4th ed ISBN 0-471-17869-1(cloth: alk. paper) 1. Telecommunication. 2. Signal theory(Telecommunication)I. Title. TK5101H372000 621382dc21 99042977 e United States of America 1098765432 In loving memory of vera PREEACE A Electrical engineering education has undergone some radical changes during the past cou ple of decades and continues to do so. A modern undergraduate program in electrical engineering includes the following two introductory courses: ex Signals and Systems, which provides a balanced and integrated treatment of contin uous-time and discrete-time forms of signals and systems. The Fourier transform(in its different forms), Laplace transform, and z-transform are ti cally, the course also includes an elementary treatment of communication system Probability and Random Processes, which develops an intuitive grasp of discrete and ontinuous random variables and then introduces the notion of and its characteristics Typically, these two introductory courses lead to a senior-level course on communication systens The fourth edition of this book has been written with thi is background and primary objective in mind. Simply put, the book provides a modern treatment of communication systems at a level suitable for a one-or two-semester senior undergraduate course. The emphasis is on the statistical underpinnings of communication theory with applications. The material is presented in a logical manner, and it is illustrated with examples with the overall aim being that of helping the student develo asp theory under discussion. Except for the Background and Preview chapter, each chapter ends with numerous problems designed not only to help the students test their understand ing of the material covered in the chapter but also to challenge them to extend this material. Every chapter includes notes and references that provide suggestions for further reading. Sections or subsections that can be bypassed without loss of continuity are identified with a distinctive feature of the book is the inclusion of eight computer experiments using MATLAB. This set of experiments provides the basis of a "Software Laboratory",with each experiment being designed to extend the material covered in the pertinent chapter Most important, the experiments exploit the unique capabilities of matlab in an instruc tive manner. The matlaB codes for all these experiments are available on the Wiley web sitehttp://www.wiley.com/college/haykin/ Th ground and Preview chapter presents introductory and motivational ma terial, paving the way for detailed treatment of the many facets of communication systems in the subsequent 10 chapters. The material in these chapters is organized as follows Chapter 1 develops a detailed treatment of rando processes, with particular emphasis on their partial characterization(i. e, second-order statistics) .In effect, the discussion is restricted to wide-sense stationary processes. The correlation viii PREFACE properties and power spectra of random processes are described in detail. Gaussian processes and narrowband noise feature prominently in the study of communication systems, hence their treatment in the latter part of the chapter. This treatment nat- urally leads to the consideration of the Rayleigh and Rician distributions that arise In a communications environment g Chapter 2 presents an integrated treatment of continuous-wave (Cw) modulation (i.e,, analog communications)and their different types, as outlined her (i)Amplitude modulation, which itself can assume one of the following forms(de pending on how the spectral characteristics of the modulated wave are specified) Full amplitude modulat b Double sideband-suppressed carrier modulation Quadrature amplitude modulation ngle Sideband modulation bs Vestigial sideband modulation (ii)Angle modulation, which itself can assume one of two interrelated forms 沙 Phase modulation sa. Frequency modulation The time-domain and spectral characteristics of these modulated waves, methods for their generation and detection, and the effects of channel noise on their performances P Chapter 3 covers pulse modulation and discusses the processes of sampling, quan tization, and coding that are fundamental to the digital transmission of analog sig nals. This chapter may be viewed as the transition from analog to digital commu nications. Specifically, the following types of pulse modulation are discussed: Analog pulse modulation, where only time is represented in discrete form; it embodies the following special forms > Pulse amplitude modulation B- Pulse width(duration) modulation Pule position modulation The characteristics of pulse amplitude modulation are discussed in detail, as it is basic to all forms of pulse modulation, be they of the analog or digital type, (ii) Digital pulse modulation, in which both time and signal amplitude are repre- sented in discrete form; it embodies the following special forms B- Pulse-code modulation 参 Delta modulation Differential pulse-code modulation In dela modulation, the sampling rate is increased far in excess of that used in pulse code modulation so as to simplify implementation of the system. In contrast, in differential pulse-code modulation, the sampling rate is reduced through the use of a predictor that exploits the correlation properties of the information-bearing signal (ii)MPEG/audio coding standard, which includes a psychoacoustic model as a key lement in the design of the encoder m Chapter 4 covers baseband pulse transmission, which deals with the transmission of discussed the effects of channel noise and limited channel bandwidth on the perfor- mance of a digital communication system. assuming that the channel noise is additive 【实例截图】
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