Preface
The field of digital communication has evolved rapidly in the past few
decades, with commercial applications proliferating in wireline communication
networks (e.g., digital subscriber loop, cable, fiber optics), wireless
communication (e.g., cell phones and wireless local area networks), and storage
media (e.g., compact discs, hard drives). The typical undergraduate and
graduate student is drawn to the field because of these applications, but is
often intimidated by the mathematical background necessary to understand
communication theory. A good lecturer in digital communication alleviates
this fear by means of examples, and covers only the concepts that directly
impact the applications being studied. The purpose of this text is to provide
such a lecture style exposition to provide an accessible, yet rigorous, introduction
to the subject of digital communication. This book is also suitable for
self-study by practitioners who wish to brush up on fundamental concepts.
The book can be used as a basis for one course, or a two course sequence, in
digital communication. The following topics are covered: complex baseband
representation of signals and noise (and its relation to modern transceiver
implementation); modulation (emphasizing linear modulation); demodulation
(starting from detection theory basics); communication over dispersive channels,
including equalization and multicarrier modulation; computation of performance
benchmarks using information theory; basics of modern coding
strategies (including convolutional codes and turbo-like codes); and introduction
to wireless communication. The choice of material reflects my personal
bias, but the concepts covered represent a large subset of the tricks of the
trade. A student who masters the material here, therefore, should be well
equipped for research or cutting edge development in communication systems,
and should have the fundamental grounding and sophistication needed
to explore topics in further detail using
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