Digital Signal Transmission

Brief summary

The focus of this book is the  »calculation of the error probability«,  which is the decisive quality feature for digital systems.  The description is mainly in baseband,  but most of the results can also be applied to the digital carrier frequency systems.

1. Error probability and optimization of baseband transmission systems.  Properties of Nyquist systems.  First and second Nyquist criteria.
2. Fundamentals of line coding:  Redundancy-free codes,  blockwise  $($4B3T$)$  and  symbolwise encoding  $($pseudoternary codes$)$.  Power spectral density.
3. Optimization considering intersymbol interference:  Eye diagram,  linear Nyquist equalization,  decision feedback equalization,  Viterbi receiver.
4. Generalized description of digital modulation schemes:  Basis functions and vector spaces,  coherent and incoherent demodulation.
5. Digital channel models:  Error distance distribution and error correlation function.  BSC model.  Gilbert/Elliott and McCullough bundle error models.

Notes:

• A basic knowledge of  "Signal Representation"  and  "Stochastic Signal Theory"  $($Books 1 and 3$)$  is assumed for understanding this book.

• There are certain,  quite intentional overlaps with the book  "Modulation Methods".

• Mostly a time-variant channel is assumed.  Time invariance is dealt with in the books  "Mobile Communications"  and  "Examples_of_Communication_Systems" .

⇒   Here first an  »Overview of contents«  on the basis of the  »five main chapters«  with a total of  »26 individual chapters«  and  »201 sections'«.

Contents

Digital Signal Transmission under Idealized Conditions

• System Components of a Baseband Transmission System
• Error Probability for Baseband Transmission
• Properties of Nyquist Systems
• Optimization of Baseband Transmission Systems
• Linear Digital Modulation - Coherent Demodulation

Coded and Multilevel Transmission

• Basics of Coded Transmission
• Redundancy-Free Coding
• Block Coding with 4B3T Codes
• Symbolwise Coding with Pseudo-Ternary Codes

Intersymbol Interfering and Equalization Methods

• Causes and Effects of Intersymbol Interference
• Error Probability with Intersymbol Interference
• Consideration of Channel Distortion and Equalization
• Intersymbol Interference for Multi-Level Transmission
• Linear Nyquist Equalization
• Decision Feedback
• Optimal Receiver Strategies
• Viterbi Receiver

Generalized Description of Digital Modulation Methods

• Signals, Basis Functions and Vector Spaces
• Structure of the Optimal Receiver
• Approximation of the Error Probability
• Carrier Frequency Systems with Coherent Demodulation
• Carrier Frequency Systems with Non-Coherent Demodulation

Digital Channel Models

• Parameters of Digital Channel Models
• Binary Symmetric Channel
• Burst Error Channels
• Applications for Multimedia Files

In addition to these theory pages,  we also offer exercises and multimedia modules on this topic,  which could help to clarify the teaching material:

$(1)$    $\text{Exercises}$

$(2)$    $\text{Learning videos}$

$(3)$    $\text{Applets}$ 

Further links

$(4)$    $\text{Bibliography}$

$(5)$    $\text{Impressum}$

In addition to these theory pages,  we also offer tasks and multimedia modules on this topic,  which could help to clarify the teaching material:

• $\text{Exercises}$

• $\text{Learning videos}$

• $\text{Applets}$ 

$\text{Further links:}$

$(1)$    $\text{Bibliography for the book}$

$(2)$    $\text{General notes about the book}$   (authors,  other participants,  materials as a starting point for the book,  list of sources)