Nonlinear digital encoders for data communications / Calin Vladeanu, Safwan El Assad.

Format:

Book

Author/Creator:

Vlădeanu, Călin, author.

El Assad, Safwan, author.

Series:

Focus series in digital signal and image processing.

Focus series (London, England)

FOCUS : Digital Signal and Image Processing Series, 2051-249X

FOCUS Series

Language:

English

Subjects (All):

Computer networks--Management.

Computer networks.

Data transmission systems.

Physical Description:

1 online resource (171 p.)

Edition:

1st ed.

Place of Publication:

London ; Hoboken, New Jersey : ISTE : Wiley, 2014.

Language Note:

English

Summary:

This book presents digital encoders for data communications. After an introduction on data communications and different sequences, the authors present the frey encoder as a digital filter followed by the trellis-coded and parallel turbo trellis-coded modulation schemes using nonlinear digital encoders.The book contains many numerical examples that complete the description of the analyzed schemes. Also, some performance simulation results are provided. Appendixes include demonstrations for the mathematical apparatus used throughout the book and some Matlab/Simulink source files used to ru

Contents:

Cover; Title Page; Contents; Preface; Introduction; Chapter 1. Applications of Nonlinear Digital Encoders; 1.1. Secure communications using nonlinear digital encoders; 1.1.1. The general nonlinear digital encoder scheme; 1.1.2. Quasi-chaotic sequence properties; 1.1.3. An example of simple nonlinear digital encoder: the Frey chaotic encoder; 1.1.4. Simulation results revealing the quasi-chaotic properties for the sequences generated using the Frey encoder; 1.2. Chaotic spreading sequences for direct-sequence code division multiple access

1.3. Sequence synchronization in discrete-time nonlinear systems1.3.1. An example of sequence synchronization using the inverse system; 1.3.2. The dead-beat synchronization method; 1.3.3. A communication scheme using the dead-beat synchronization; Chapter 2. Presentation of the Frey Nonlinear Encoder as a Digital Filter; 2.1. The mathematical analysis of the Frey encoder; 2.2. The definitions and properties of the unsigned and 2's complement signed sample operators; 2.3. The properties of the LCIRC nonlinear function used in the Frey encoder scheme

2.4. The simulation of the Frey sequence generator block in Simulink: some practical considerations2.4.1. The transmitter chaotic sequence generator; 2.4.2. The receiver chaotic sequence generator and the dead-beatsynchronization with the transmitter block; 2.4.3. The Simulink implementations for the blocks used in the Frey chaoticcodec; Chapter 3. Trellis-Coded Modulation Schemes Using Nonlinear Digital Encoders; 3.1. The presentation of the Frey nonlinear encoder as a convolutional encoder

3.2. Frey encoder trellis design optimization methods for pulse amplitude - trellis-coded modulation (TCM) schemes3.2.1. Increasing the coding gain by reducing the representation code wordlength in the input; 3.2.2. Equivalence between a nonlinear and a linear encoder in a particularcase; 3.2.3. Generalized optimum encoder for a PAM-TCM transmission; 3.2.4. Increasing the coding gain by increasing the number of outputs; 3.3. Optimum nonlinear encoders for phase shift keying - TCM schemes; 3.3.1. Rate-1/2 optimum encoder for a QPSK-TCM transmission

3.3.2. Generalized optimum encoder for a PSK-TCM transmission3.4. Optimum nonlinear encoders for quadrature amplitude modulation - TCM schemes; 3.5. Performance analysis of TCM data communications using modified nonlinear digital encoders: simulation results; Chapter 4. Parallel Turbo Trellis-Coded Modulation Schemes Using Nonlinear Digital Encoders; 4.1. Recursive convolutional-left circulate (RC-LCIRC) encoder in a turbo trellis-coded modulation (TTCM) scheme; 4.2. New recursive and systematic convolutional nonlinear encoders for parallel TTCM schemes

4.3. Punctured TTCM transmissions using recursive systematic convolutional nonlinear encoders

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

9781118815847

111881584X

9781118815649

1118815645

9781118815809

1118815807

OCLC:

874321937