Introduction to Digital Communications

  • Joachim Speidel

Part of the Signals and Communication Technology book series (SCT)

Table of contents

  1. Front Matter
    Pages i-xvii
  2. Digital Communications Over Single Input Single Output Channels

    1. Front Matter
      Pages 1-1
    2. Joachim Speidel
      Pages 17-22
    3. Joachim Speidel
      Pages 23-29
    4. Joachim Speidel
      Pages 31-45
    5. Joachim Speidel
      Pages 63-65
    6. Joachim Speidel
      Pages 67-79
  3. Theory of Linear Time-Variant Systems

    1. Front Matter
      Pages 89-89
    2. Joachim Speidel
      Pages 91-93
    3. Joachim Speidel
      Pages 103-112
    4. Joachim Speidel
      Pages 113-120
    5. Joachim Speidel
      Pages 121-124
    6. Joachim Speidel
      Pages 127-137
  4. Multiple Input Multiple Output Wireless Transmission

    1. Front Matter
      Pages 139-139
    2. Joachim Speidel
      Pages 141-142
    3. Joachim Speidel
      Pages 165-191
    4. Joachim Speidel
      Pages 193-202
    5. Joachim Speidel
      Pages 203-207
    6. Joachim Speidel
      Pages 233-244
    7. Joachim Speidel
      Pages 245-267
    8. Joachim Speidel
      Pages 269-291
  5. Back Matter
    Pages 293-330

About this book


This book offers students, scientists and engineers an extensive introduction to the theoretical fundamentals of digital communications, covering single input single output (SISO), multiple input multiple output (MIMO), and time-variant systems. Further, the main content is supplemented by a wealth of representative examples and computer simulations.

The book is divided into three parts, the first of which addresses the principles of wire-line and wireless digital transmission over SISO links. Digital modulation, intersymbol interference, and various detection methods are discussed; models for realistic time-variant, wireless channels are introduced; and the equivalent time-variant baseband system model is derived.

Since not all readers may be familiar with this topic, Part II is devoted to the theory of linear time-variant systems. The generalized convolution is derived and readers are introduced to impulse response, the delay spread function, and system functions in the frequency domain. In addition, randomly changing systems are discussed.

In turn, Part III deals with MIMO systems. It describes MIMO channel models with and without spatial correlation, including the Kronecker model. Both linear and nonlinear MIMO receivers are investigated. The question of how many bits per channel use can be transmitted is answered and maximizing channel capacity is addressed. Principles of space–time coding are outlined in order to improve transmission quality and increase data rates. In closing, the book describes multi-user MIMO schemes, which reduce interference when multiple users in the same area transmit their signals in the same time slots and frequency bands. 


Intersymbol interference reduction Equivalent time-variant baseband system Nyquist criterion for data transmission Maximum likelihood detection Symbol-by-symbol and sequence detection Viterbi algorithm Multipath wireless channel Rayleigh fading channel Random variables and noise in communications Mathematical description of time-variant systems Time-variant generalized convolution Time-variant impulse response Time-variant transfer function Wide-sense stationary uncorrelated scattering Frequency flat MIMO channel matrix Zero-forcing and minimum mean squared error receiver MIMO system with precoding MIMO channel capacity Space-time coding Multi-user MIMO and multi-user interference

Authors and affiliations

  • Joachim Speidel
    • 1
  1. 1.Institute of TelecommunicationsUniversity of StuttgartStuttgart, Baden-WurttembergGermany

Bibliographic information

  • DOI
  • Copyright Information Springer Nature Switzerland AG 2019
  • Publisher Name Springer, Cham
  • eBook Packages Engineering Engineering (R0)
  • Print ISBN 978-3-030-00547-4
  • Online ISBN 978-3-030-00548-1
  • Series Print ISSN 1860-4862
  • Series Online ISSN 1860-4870
  • Buy this book on publisher's site
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