Digital Communications / Edition 4

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Digital Communications is a classic book in the area that is designed to be used as a senior or graduate level text. The text is flexible and can easily be used in a one semester course or there is enough depth to cover two semesters. Its comprehensive nature makes it a great book for students to keep refer to in their professional careers.

This best-selling book in Digital Communications by John G. Proakis has been revised to reflect the current trends in the field. Some of the topics that have been added include Turbocodes, Antenna Arrays, Iterative Detection, and Digital Cellular Systems. Also new to this edition are electronic figures for presentation materials found on the website.

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Editorial Reviews

This textbook for a first-year graduate-level course in an electrical engineering curriculum presents the basic principles that underlie the analysis and design of digital communication systems. The fourth edition adds several new topics, including serial and parallel concatenated codes, punctured convolutional codes, turbo TCM and turbo equalization, and spatial multiplexing. Annotation c. Book News, Inc., Portland, OR (
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Product Details

  • ISBN-13: 9780072321111
  • Publisher: McGraw-Hill Companies, The
  • Publication date: 8/28/2000
  • Edition description: Older Edition
  • Edition number: 4
  • Pages: 1024
  • Product dimensions: 7.60 (w) x 9.40 (h) x 1.70 (d)

Meet the Author

John G. Proakis has been on the faculty of Northeastern University since September of 1969. During the period 1982-1997, he held the administrative positions of Chairman of the Department of Electrical and Computer Engineering, Associate Dean of Research and Graduate Studies, and as Interim Dean of the College of Engineering. He has also served on the staffs of GTE Laboratories and the MIT Lincoln Laboratory.

Dr. Proakis received the BSEE Degree from the University of Cincinnati, the MSEE Degree from MIT, and the Ph.D. in Engineering from Harvard University. His professional experience and research interests are in the general areas of digital communications and digital signal processing, about which he has written extensively.

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Table of Contents

1 Introduction 1
2 Probability and Stochastic Processes 17
3 Source Coding 82
4 Characterization of Communication Signals and Systems 152
5 Optimum Receivers for the Additive White Gaussian Noise Channel 233
6 Carrier and Symbol Synchronization 333
7 Channel Capacity and Coding 374
8 Block and Convolutional Channel Codes 413
9 Signal Design for Band-Limited Channels 534
10 Communication through Band-Limited Linear Filter Channels 583
11 Adaptive Equalization 636
12 Multichannel and Multicarrier Systems 680
13 Spread Spectrum Signals for Digital Communications 695
14 Digital Communication through Fading Multipath Channels 758
15 Multiuser Communications 840
Appendix A: The Levinson-Durbin Algorithm 879
Appendix B: Error Probability for Multichannel Binary Signals 882
Appendix C: Error Probabilities for Adaptive Reception of M-phase Signals 887
Appendix D: Square-Root Factorization 897
References and Bibliography 899
Index 917
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The fourth edition of Digital Communications has undergone a minor revision. Several new topics have been added, including serial and parallel concatenated codes, punctured convolutional codes, turbo TCM and turbo equalization, and spatial multiplexing. Since this is an introductory-level text, the treatment of these topics is limited in scope.

The book is designed to serve as a text for a first-year graduate-level course for students in electrical engineering. It is also designed to serve as a text for selfstudy and as a reference book for the practicing engineer involved in the design of digital communications systems. As a background, I presume that the reader has a thorough understanding of basic calculus and elementary linear systems theory and some prior knowledge of probability and stochastic processes.

Chapter 1 is an introduction to the subject, including a historical perspective and a description of channel characteristics and channel models.

Chapter 2 contains a review of the basic elements of probability and stochastic processes. It deals with a number of probability distribution functions and moments that are used throughout the book. It also includes the derivation of the Chernoff bound, which is useful in obtaining bounds on the performance of digital communications systems.

Chapter 3 treats source coding for discrete and analog sources. Emphasis is placed on scalar and vector quantization techniques, and comparisons are made with basic results from rate-distortion theory.

In Chapter 4, the reader is introduced to the representation of digitally modulated signals and to the characterization of narrowband signals and systems. Also treated in thischapter are the spectral characteristics of digitally modulated signals. New material has been added on a linear representation of CPM signals.

Chapter 5 treats the design of modulation and optimum demodulation and detection methods for digital communications over an additive white Gaussian noise channel. Emphasis is placed on the evaluation of the error rate performance for the various digital signaling techniques and on the channel bandwidth requirements of the corresponding signals.

Chapter 6 is devoted to carrier phase estimation and time synchronization methods based on the maximum-likelihood criterion. Both decision-directed and non-decision-directed methods are described.

Chapter 7 treats the topics of channel capacity for several different channel models and random coding.

Chapter 8 treats linear block and convolutional codes. The new topics added to the chapter include serial and parallel interleaved concatenated block and convolutional codes, punctured and rate-compatible convolutional codes, the soft-output Viterbi algorithm (SOVA), and turbo TCM.

Chapter 9 is focused on signal design for bandlimited channels. This chapter includes the topics of partial response signals and run-length-limited codes for spectral shaping.

Chapter 10 treats the problem of demodulation and detection of signals corrupted by intersymbol interference. The emphasis is on optimum and suboptimum equalization methods and their performance. New topics added to the chapter include Tomlinson-Harashima precoding, reduced complexity maximum-likelihood detectors, and turbo equalization.

Chapter 11 treats adaptive channel equalization. The LMS and recursive least-squares algorithms are described, together with their performance characteristics. This chapter also includes a treatment of blind equalization algorithms. New topics added include the tap-leakage algorithm and methods for accelerating the initial convergence of the LMS algorithm.

Chapter 12 treats multichannel and multicarrier modulation. The latter subject is particularly appropriate in view of several important applications that have been developed over the past two decades.

Chapter 13 is devoted to spread spectrum signals and systems. The benefits of coding in the design of spread spectrum signals is emphasized throughout this chapter.

Chapter 14 treats communication through fading channels. Several channel fading statistical models are considered, with emphasis placed on Rayleigh fading and Nakagami fading. Trellis coding for fading channels is also included in this chapter. New material added includes a brief treatment of fading and multipath characteristics of mobile radio channels, receiver structures for fading multipath channels with intersymbol interference, and spatial multiplexing using multiple transmit and receive antennas.

Chapter 15 treats multiuser communications. The emphasis is on code-division multiple access (CDMA), signal detection and random access methods, such as ALOHA and carrier-sense multiple access (CSMA).

With 15 chapters and a variety of topics, the instructor has the flexibility to design either a one- or two-semester course. Chapters 3 through 6 provide a basic treatment of digital modulation/demodulation and detection methods. Channel coding, treated in Chapters 7 and 8, can be included along with modulation and demodulation in a one-semester course. The topics of channel equalization, fading channels, spread spectrum, and multiuser communications can be covered in a second-semester course.

Throughout my professional career, I have had the opportunity to work with and learn from a number of people whom I should like to publicly acknowledge. These include Dr. R. Price, P.R. Drouilhet, Jr., and Dr. P.E. Green, Jr., who introduced me to various aspects of digital communications through fading multipath channels and multichannel signal transmission during my employment at the MIT Lincoln Laboratory. I am also indebted to Professor D.W. Tufts, who supervised my Ph.D. dissertation at Harvard University and who introduced me to the problems of signal design and equalization for band-limited channels. Over the years, I have had the pleasure of working on a variety of research projects in collaboration with colleagues at GTE and Stein Associates, including Dr. S. Stein, Dr. B. Barrow, Dr. A.A. Giordano, Dr. A.H. Levesque, Dr. R. Greenspan, Dr. D. Freeman, P.H.Anderson, D. Gooding, and J. Lindholm. At Northeastern University, 1 have had the benefit of collaborating with Dr. M. Salehi, Dr. M. Stojanovic, and Dr. D. Brady. Dr. T. Schonhoff provided the graphs illustrating the spectral characteristics of CPFSK, and H. Gibbons provided the data for the graphs in Chapter 14 that show the performance of PSK and DPSK with diversity. The assistance of these colleagues is greatly appreciated.

McGraw-Hill and I would like to thank the following reviewers of this edition for their valuable suggestions: William E. Ryan, University of Arizona; Tan Wong, University of Florida; and Raymond Pickholtz, George Washington University.

Finally, I wish to express my appreciation to Gloria Doukakis, for typing the manuscript of this edition, and to Apostolos Rizos for preparing the Solutions Manual.

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  • Anonymous

    Posted May 1, 2006

    Is this a textbook or a reference manual?

    I read the following review of the Proakis text on another site, and I agree with it completely. The original author of the review gave the text four stars, so I'll follow suit... 'Is this a textbook or a reference manual?, December 19, 1999. Many of the reviewers criticized the book, largely because of it being difficult to read. However, the real question a potential reader should ask him/herself is whether the book is intended as a reference manual or as a textbook for learning new material. As a textbook, the pace is too fast, there are few examples, and the level is too complicated for the novice reader. However, as a reference manual, for the practicing engineer or researcher, this book encompasses a vast span of material and is extremely useful. The potential buyer must determine whether the book is intended as a textbook or reference manual. As a reference manual the book deserves the full five stars, but as a textbook, two stars are more than enough.'..... If you're looking for a readable textbook to help introduce you to the digital communications concepts, I'd recommend the Sklar text. I use the two in tandem - Sklar first for an initial understanding of the concepts, and then the Proakis text in order to get all indepth with it (i.e. to build on Sklar's foundation)

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  • Anonymous

    Posted November 8, 2004

    Probability; Just pick the worst book, that is Proakis.

    I had this text book as a mandotary text book for Digital Communications at University of Nottingham, i read the first four chapters, and I had to get a different text book for understanding Digital Communications, at my cost. In its 4th edition, it proved to be a really difficult text book especially for Asians who are non English native speakers. I had no diffculty with the language, even so the book was written by a non English language author, sold in it's low cost Asian edition print, it is not a worthy text book for Digital Communications. The author is unable to relate the text to actual physical systems and does not provide any reference to existing systems, the theory is far from descriptive for a theoretical text. The relation to electronic circuits is not indicated, and it comes across like a Data Communications text book. I do not recommend this book, However, the praise for the author was over exemplified by the course instructor, but the book is far from a technical presentation.

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