On Low-density Parity-check Convolutional Codes

On Low-density Parity-check Convolutional Codes PDF Author: Marcos Bruno Saldanha Tavares
Publisher: Jörg Vogt Verlag
ISBN: 3938860383
Category :
Languages : en
Pages : 238

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On Low-density Parity-check Convolutional Codes

On Low-density Parity-check Convolutional Codes PDF Author: Marcos Bruno Saldanha Tavares
Publisher: Jörg Vogt Verlag
ISBN: 3938860383
Category :
Languages : en
Pages : 238

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Book Description


Fundamentals of Convolutional Coding

Fundamentals of Convolutional Coding PDF Author: Rolf Johannesson
Publisher: John Wiley & Sons
ISBN: 0470276835
Category : Technology & Engineering
Languages : en
Pages : 686

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Book Description
Fundamentals of Convolutional Coding, Second Edition, regarded as a bible of convolutional coding brings you a clear and comprehensive discussion of the basic principles of this field Two new chapters on low-density parity-check (LDPC) convolutional codes and iterative coding Viterbi, BCJR, BEAST, list, and sequential decoding of convolutional codes Distance properties of convolutional codes Includes a downloadable solutions manual

On the Understanding of Protograph-based Low-Density Parity-Check Convolutional Code Design

On the Understanding of Protograph-based Low-Density Parity-Check Convolutional Code Design PDF Author: Patrick Grosa
Publisher:
ISBN: 9783938860823
Category :
Languages : en
Pages : 106

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Low Density Parity Check (LDPC) Codes for Dedicated Short Range Communications (DSRC) Systems

Low Density Parity Check (LDPC) Codes for Dedicated Short Range Communications (DSRC) Systems PDF Author: Najmeh Khosroshahi
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
In this effort, we consider the performance of a dedicated short range communication (DSRC) system for inter-vehicle communications (IVC). The DSRC standard employs convolutional codes for forward error correction (FEC). The performance of the DSRC system is evaluated in three different channels with convolutional codes, regular low density parity check (LDPC) codes and quasi-cyclic (QC) LDPC codes. In addition, we compare the complexity of these codes. It is shown that LDPC and QC-LDPC codes provide a significant improvement in performance compared to convolutional codes.

Enhancements to Low Density Parity Check Codes

Enhancements to Low Density Parity Check Codes PDF Author: Khaled ElMahgoub
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838340906
Category :
Languages : en
Pages : 88

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Book Description
LDPC Codes are considered to be serious competitors to turbo codes in terms of performance and complexity. They are specified by a sparse parity check matrix containing mostly 0s and relatively few 1s. In this book, LDPC codes used in the IEEE 802.16 standard physical layer were studied. Two novel techniques to enhance the performance of such codes are introduced. In the first technique, a novel parity check matrix for LDPC codes over GF(4) is proposed based on the binary parity check matrix used in the IEEE 802.16 standard . The proposed code has proven to outperform the binary code used in the IEEE 802.16 standard over both AWGN and SUI-3 channel model. In the second technique, high rate LDPC code is used, in a concatenated coding structure, as an outer code, with a convolutional code as an inner code. The performance of such a concatenated codes is compared with the commonly used one utilizing Reed-Solomon codes over the standard SUI-3 channel model, and show better performance.

Introduction to Convolutional Codes with Applications

Introduction to Convolutional Codes with Applications PDF Author: Ajay Dholakia
Publisher: Springer Science & Business Media
ISBN: 1461527120
Category : Technology & Engineering
Languages : en
Pages : 256

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Book Description
Introduction to Convolutional Codes with Applications is an introduction to the basic concepts of convolutional codes, their structure and classification, various error correction and decoding techniques for convolutionally encoded data, and some of the most common applications. The definition and representations, distance properties, and important classes of convolutional codes are also discussed in detail. The book provides the first comprehensive description of table-driven correction and decoding of convolutionally encoded data. Complete examples of Viterbi, sequential, and majority-logic decoding technique are also included, allowing a quick comparison among the different decoding approaches. Introduction to Convolutional Codes with Applications summarizes the research of the last two decades on applications of convolutional codes in hybrid ARQ protocols. A new classification allows a natural way of studying the underlying concepts of hybrid schemes and accommodates all of the new research. A novel application of fast decodable invertible convolutional codes for lost packet recovery in high speed networks is described. This opens the door for using convolutional coding for error recovery in high speed networks. Practicing communications, electronics, and networking engineers who want to get a better grasp of the underlying concepts of convolutional coding and its applications will greatly benefit by the simple and concise style of explanation. An up-to-date bibliography of over 300 papers is included. Also suitable for use as a textbook or a reference text in an advanced course on coding theory with emphasis on convolutional codes.

Codes, Systems, and Graphical Models

Codes, Systems, and Graphical Models PDF Author: Brian Marcus
Publisher: Springer Science & Business Media
ISBN: 1461301653
Category : Computers
Languages : en
Pages : 520

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Book Description
Coding theory, system theory, and symbolic dynamics have much in common. A major new theme in this area of research is that of codes and systems based on graphical models. This volume contains survey and research articles from leading researchers at the interface of these subjects.

Channel Codes

Channel Codes PDF Author: William Ryan
Publisher: Cambridge University Press
ISBN: 1139483013
Category : Technology & Engineering
Languages : en
Pages : 709

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Book Description
Channel coding lies at the heart of digital communication and data storage, and this detailed introduction describes the core theory as well as decoding algorithms, implementation details, and performance analyses. In this book, Professors Ryan and Lin provide clear information on modern channel codes, including turbo and low-density parity-check (LDPC) codes. They also present detailed coverage of BCH codes, Reed-Solomon codes, convolutional codes, finite geometry codes, and product codes, providing a one-stop resource for both classical and modern coding techniques. Assuming no prior knowledge in the field of channel coding, the opening chapters begin with basic theory to introduce newcomers to the subject. Later chapters then extend to advanced topics such as code ensemble performance analyses and algebraic code design. 250 varied and stimulating end-of-chapter problems are also included to test and enhance learning, making this an essential resource for students and practitioners alike.

Polynomial Theory of Error Correcting Codes

Polynomial Theory of Error Correcting Codes PDF Author: Giovanni Cancellieri
Publisher: Springer
ISBN: 3319017276
Category : Technology & Engineering
Languages : en
Pages : 732

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Book Description
The book offers an original view on channel coding, based on a unitary approach to block and convolutional codes for error correction. It presents both new concepts and new families of codes. For example, lengthened and modified lengthened cyclic codes are introduced as a bridge towards time-invariant convolutional codes and their extension to time-varying versions. The novel families of codes include turbo codes and low-density parity check (LDPC) codes, the features of which are justified from the structural properties of the component codes. Design procedures for regular LDPC codes are proposed, supported by the presented theory. Quasi-cyclic LDPC codes, in block or convolutional form, represent one of the most original contributions of the book. The use of more than 100 examples allows the reader gradually to gain an understanding of the theory, and the provision of a list of more than 150 definitions, indexed at the end of the book, permits rapid location of sought information.

Trellis and Turbo Coding

Trellis and Turbo Coding PDF Author: Christian B. Schlegel
Publisher: John Wiley & Sons
ISBN: 111910632X
Category : Science
Languages : en
Pages : 528

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Book Description
This new edition has been extensively revised to reflect the progress in error control coding over the past few years. Over 60% of the material has been completely reworked, and 30% of the material is original. Convolutional, turbo, and low density parity-check (LDPC) coding and polar codes in a unified framework Advanced research-related developments such as spatial coupling A focus on algorithmic and implementation aspects of error control coding