Information and Communication Theory
Description
In an accessible and practical style, Information and Communication Theory explores the topic of information theory and includes concrete tools that are appropriate for real-life communication systems. The text investigates the connection between theoretical and practical applications through a wide-variety of topics including an introduction to the basics of probability theory, information, (lossless) source coding, typical sequences as a central concept, channel coding, continuous random variables, Gaussian channels, discrete input continuous channels, and a brief look at rate distortion theory.
The author explains the fundamental theory together with typical compression algorithms and how they are used in reality. He moves on to review source coding and how much a source can be compressed, and also explains algorithms such as the LZ family with applications to e.g. zip or png. In addition to exploring the channel coding theorem, the book includes illustrative examples of codes. This comprehensive text:
* Provides an adaptive version of Huffman coding that estimates source distribution
* Contains a series of problems that enhance an understanding of information presented in the text
* Covers a variety of topics including optimal source coding, channel coding, modulation and much more
* Includes appendices that explore probability distributions and the sampling theorem
Written for graduate and undergraduate students studying information theory, as well as professional engineers, master's students, Information and Communication Theory offers an introduction to how information theory sets the boundaries for data communication.
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STEFAN HÖST is a Senior Lecturer in the Department of Electrical and Information Technology at Lund University, where he is active in the Broadband Communication research group. As a teacher he has been responsible for several courses within communication technology at the master's level. His main research area is within access networks seen from the physical layer. He is a frequent contributor to IEEE journals and to papers presented at multiple IEEE conferences.
Content
Preface ix
Chapter 1 Introduction 1
Chapter 2 Probability Theory 5
2.1 Probabilities 5
2.2 Random Variable 7
2.3 Expectation and Variance 9
2.4 The Law of Large Numbers 17
2.5 Jensen's Inequality 21
2.6 Random Processes 25
2.7 Markov Process 28
Problems 33
Chapter 3 Information Measures 37
3.1 Information 37
3.2 Entropy 41
3.3 Mutual Information 48
3.4 Entropy of Sequences 58
Problems 63
Chapter 4 Optimal Source Coding 69
4.1 Source Coding 69
4.2 Kraft Inequality 71
4.3 Optimal Codeword Length 80
4.4 Huffman Coding 84
4.5 Arithmetic Coding 95
Problems 101
Chapter 5 Adaptive Source Coding 105
5.1 The Problem with Unknown Source Statistics 105
5.2 Adaptive Huffman Coding 106
5.3 The Lempel-Ziv Algorithms 112
5.4 Applications of Source Coding 125
Problems 129
Chapter 6 Asymptotic Equipartition Property and Channel Capacity 133
6.1 Asymptotic Equipartition Property 133
6.2 Source Coding Theorem 138
6.3 Channel Coding 141
6.4 Channel Coding Theorem 144
6.5 Derivation of Channel Capacity for DMC 155
Problems 164
Chapter 7 Channel Coding 169
7.1 Error-Correcting Block Codes 170
7.2 Convolutional Code 188
7.3 Error-Detecting Codes 203
Problems 210
Chapter 8 Information Measures For Continuous Variables 213
8.1 Differential Entropy and Mutual Information 213
8.2 Gaussian Distribution 224
Problems 232
Chapter 9 Gaussian Channel 237
9.1 Gaussian Channel 237
9.2 Parallel Gaussian Channels 244
9.3 Fundamental Shannon Limit 256
Problems 260
Chapter 10 Discrete Input Gaussian Channel 265
10.1 M-PAM Signaling 265
10.2 A Note on Dimensionality 271
10.3 Shaping Gain 276
10.4 SNR Gap 281
Problems 285
Chapter 11 Information Theory and Distortion 289
11.1 Rate-Distortion Function 289
11.2 Limit For Fix Pb 300
11.3 Quantization 302
11.4 Transform Coding 306
Problems 319
Appendix A Probability Distributions 323
A.1 Discrete Distributions 323
A.2 Continuous Distributions 327
Appendix B Sampling Theorem 337
B.1 The Sampling Theorem 337
Bibliography 343
Index 347
