Understanding Information Transmission
Published on 13. January 2006
300 pages
978-0-471-71119-3 (ISBN)
Description
Understanding Information Transmission introduces you to the entire field of information technology. In this consumer handbook and introductory student resource, seven chapters span the gamut of the field--the nature, storage, transmission, networking, and protection of information. In addition to the science and technology, this book brings the subject alive by presenting the amazing history of information technology, profiling incredible inventions and fascinating inventors, and their dramatic impact on society. Features include problem sets, key points, suggested reading, review appendices, and a full chapter on mathematical methods. Private and public funding of information technology continues to grow at staggering rates. Learn what's behind this race to be the biggest, brightest, and fastest in the field with Understanding Information Transmission.
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Persons
JOHN B. ANDERSON holds the Ericsson Chair in Digital Communicationsat Lund University, Sweden. He was formerly a professor atRensselaer Polytechnic Institute. He is a Fellow of the IEEE and isa recipient of the Humboldt Research Prize and the IEEE ThirdMillennium Medal. His research and consulting practice concentrateson communication algorithms and bandwidth-efficient coding.
ROLF JOHANNESSON is Professor of Information Theory at LundUniversity, Sweden, and a Fellow of the IEEE. He was awarded thehonor of Professor, honoris causa, from the Institute forInformation Transmission Problems, Russian Academy of Sciences. Hisresearch interests include information theory, error-correctingcodes, and cryptography.
Content
Preface vii
1. Introduction: First Ideas and Some History 1
1.1 What is communication? 2
1.2 Why digital communication? 6
1.3 Some history 8
1.4 A few remarks on intellectual history 27
1.5 Conclusions 28
References 29
2. Mathematical Methods of Information Transmission: Why Sinusoids? 30
2.1 Linear, time-invariant (LTI) systems 31
2.2 On the importance of being sinusoidal 43
2.3 The Fourier transform 48
2.4 What is bandwidth? 58
2.5 Discrete-time systems 66
2.6 Conclusions 69
References 70
Problems 70
3. Information Sources: What is Out There to be Sent? 77
3.1 What is text? 78
3.2 What is speech? 81
3.3 What is music? 88
3.4 What is an image? 94
3.5 What is video? 98
3.6 Conclusion 102
References 102
Problems 103
4. Transmission Methods: How is Information Sent? 105
4.1 Communication channels 105
4.2 Analog modulation 117
4.3 Digital modulation 127
4.4 FM stereo, television and a little about electronics 139
4.5 Conclusions 146
References 147
Problems 147
5. Information Theory and Coding: What did Shannon Promise? 150
5.1 Information theory--a primer 152
5.2 Methods of source coding 179
5.3 Methods of channel coding 189
5.4 Trellis coded modulation 199
5.5 Conclusions 205
References 206
Problems 207
6. Cryptology: FUBSWRORJB?? 211
6.1 Fundamentals of cryptosystems 211
6.2 Caesar and Vigenere ciphers 215
6.3 The Vernam cipher and perfect secrecy 219
6.4 Stream ciphers 220
6.5 Block ciphers 223
6.6 Cryptomachines during World War II 224
6.7 Two-key cryptography 228
6.8 Conclusions 239
References 239
Problems 239
7. Communication Networks: Let's Get Connected 241
7.1 An overview of information networks 241
7.2 Circuit switching: The telephone net 252
7.3 Mobile telephony 260
7.4 The Internet 265
References 275
Appendix A: Complex Numbers 276
Appendix B: Sinusoids and Circuit Theory 281
Appendix C: Probability Theory: A Primer 297
Index 306
About the Authors
