Digital Communications

This book contains material that should interest students of electrical engineering and computer science specializing in digital communications and also practicing electrical engineers who apply digital communications techni ques to telecommunication systems, digital radio, digital satellites, fiber optics, and the physical layer of computer networks. This book is an outgrowth of lecture notes prepared over a number of years at various universities. In the earlier years I benefited immensely from t 5 the excellent textbooks and monographs in preparing my notes. - With passing time I had to rely more and more on the current periodical literature, mainly the IEEE Transactions and the Bell System Technical Journal. Although the book is intended mainly for those who have already had an introduction to communications, as usually taught in an undergraduate course, it can also be used without this background. For that purpose I concentrated most of the necessary mathematics in Chapter I. If the mathematics is not an obstacle, the reader can start with Chapter 2. I tried, as far as possible, to make each chapter independent of the other chapters, and for that reason many concepts and notations have been defined several times. To keep the book at a reasonable length, however, it was impossible, in most cases, not to rely on derivations and results of previous chapters.

List of contents

1. Signals, Filters, Random Variables and Random Processes.- 1.1 Introduction.- 1.2 Deterministic signals and their transforms.- 1.3 Linear systems and filters.- 1.4 Equivalence of baseband and bandpass signals and filters.- 1.5 Random variables.- 1.6 Two random variables.- 1.7 Random vectors.- 1.8 Random process.- 1.9 Summary.- 1.10 Problems.- 1.11 References.- 2. Baseband and Modulated Signals.- 2.1 Introduction.- 2.2 Common, full-response, shaping function.- 2.3 Nonoverlapping shaping function.- 2.4 Overlapping shaping function.- 2.5 Conclusions.- 2.6 Problems.- 2.7 References.- 3. Power Spectral Density (PSD) and Bandwidth.- 3.1 Introduction.- 3.2 PSD and bandwidth of modulated signal.- 3.3 PSD of complex envelope.- 3.4 PSD of baseband signal.- 3.5 PSD of LSK.- 3.6 Optimisation of shaping function.- 3.7 PSD of PSK.- 3.8 PSD of FSK.- 3.9 The PSD of MSK.- 3.10 The PSD of QASK and OQASK with nonlinear bandpass filtering.- 3.11 Filter bandwidth for digital radio.- 3.12 Summary.- 3.13 Problems.- 3.14 References.- 4. ASK Baseband System.- 4.1 Introduction.- 4.2 Optimal decision region and error probability.- 4.3 Nyquist condition for no ISI.- 4.4 Effect of ISI.- 4.5 System with NRZ, HS, and SP shaping functions.- 4.6 Approximations of Nyquist functions.- 4.7 Summary.- 4.8 Problems.- 4.9 References.- 5. ASK Bandpass System.- 5.1 Introduction.- 5.2 Bandpass and Baseband ASK.- 5.3 Error probability.- 5.4 Error probability for ASK-DSB with nonsymmetric bandpass filter.- 5.5 Summary and conclusions.- 5.6 Problems.- 5.7 References.- 6. QASK and OQASK.- 6.1 Introduction.- 6.2 Condition of no interference.- 6.3 Systems with no interference.- 6.4 Effect of interference in rectangular constellations (QASK, OQASK).- 6.5 Effect of interference in circular constellations (PSK).- 6.6 Channel with flat and frequency selective fading.- 6.7 Summary.- 6.8 Problems.- 6.9 References.- 7. PSK and DPSK.- 7.1 Introduction.- 7.2 PSK.- 7.3 DPSK.- 7.4 Summary.- 7.5 Problems.- 7.6 References.- 8. FSK.- 8.1 Introduction.- 8.2 Coherent FSK.- 8.3 Noncoherent FSK.- 8.4 FSK with discriminator detector.- 8.5 FSK with discriminator and detector filter.- 8.6 Observation interval longer than T.- 8.7 Summary.- 8.8 Problems.- 8.9 References.- 9. Partial Response Signals.- 9.1 Introduction.- 9.2 Definition of PRS.- 9.3 Elimination of ISI by decision feedback.- 9.4 Elimination of ISI by precoding.- 9.5 Error monitoring.- 9.6 Summary.- 9.7 Problems.- 9.8 References.- 10. System Optimization.- 10.1 Introduction.- 10.2 Formulation of optimization problem.- 10.3 Optimal receiver and transmitter.- 10.4 Minimization of the mean square error.- 10.5 Summary.- 10.6 Problems.- 10.7 References.- 11. Equalization.- 11.1 Introduction.- 11.2 Definition of the problem.- 11.3 Structure of equalizers.- 11.4 Minimum mean square error.- 11.5 Zero-forcing equalizer.- 11.6 Nonlinear equalization.- 11.7 Summary.- 11.8 Problems.- 11.9 References.- 12. Line Coding.- 12.1 Introduction.- 12.2 Binary codes.- 12.3 Linear ternary codes.- 12.4 Alphabetic codes.- 12.5 Nonalphabetic codes.- 12.6 Summary.- 12.7 Problems.- 12.8 References.- Commonly Used Functions and Symbols.- List of Abbreviations.

Product details

• Authors: I Korn, I. Korn
• Publisher: Springer, Berlin
• Languages: English
• Product format: Paperback / Softback
• Released: 13.03.2013
• EAN: 9781468414639
• ISBN: 978-1-4684-1463-9
• No. of pages: 676
• Illustrations: XIX, 676 p.
• Series: Van Nostrand Reinhold Electrical/Computer Science and Engineering Series; Van Nostrand Reinhold Electrical/Computer Science and Engineering Series
• Subject: Natural sciences, medicine, IT, technology > Medicine > Clinical medicine