Modem Theory
An Introduction to Telecommunications

A detailed introduction to the theory of digital modulation and coding that underpins the modern design of modems for telecommunications.

Richard E. Blahut (Author)

9780521780148, Cambridge University Press

Hardback, published 26 November 2009

514 pages, 5 tables 186 exercises
25.5 x 17.8 x 3 cm, 1.16 kg

At the heart of any modern communication system is the modem, connecting the data source to the communication channel. This first course in the mathematical theory of modem design introduces the theory of digital modulation and coding that underpins the design of digital telecommunications systems. A detailed treatment of core subjects is provided, including baseband and passband modulation and demodulation, equalization, and sequence estimation. The modulation waveforms for communication channels and digital recording channels are treated in a common setting and with unified terminology. A variety of more advanced topics is also covered, such as trellis codes, turbo codes, the Viterbi algorithm, block codes, maximum likelihood and maximum posterior probability, iterative demodulation, and jamming. Numerous end-of-chapter exercises are also included to test the reader's understanding throughout. This insightful book is ideal for senior undergraduate students studying digital communications and is also a useful reference for practising engineers.

1. Introduction
2. Baseband modulation
3. Baseband demodulation
4. Sequences at baseband
5. Passband modulation
6. Passband demodulation
7. Principles of optimal demodulation
8. Synchronization
9. Codes for digital modulation
10. Codes for data transmission
11. Performance of practical demodulators
12. Secure communications.

Subject Areas: Communications engineering / telecommunications [TJK], Electronics engineering [TJF], Electrical engineering [THR]