Trellises And Trellis Based Decoding Algorithms For Linear Block Codes Part 3 An Iterative Decoding Algorithm For Linear Block Codes Based On A Low Weight Trellis Search
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Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 An Iterative Decoding Algorithm for Linear Block Codes Based on a Low
Author | : National Aeronautics and Space Adm Nasa |
Publsiher | : Independently Published |
Total Pages | : 26 |
Release | : 2018-10-18 |
Genre | : Science |
ISBN | : 1728906687 |
Download Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 An Iterative Decoding Algorithm for Linear Block Codes Based on a Low Book in PDF, Epub and Kindle
For long linear block codes, maximum likelihood decoding based on full code trellises would be very hard to implement if not impossible. In this case, we may wish to trade error performance for the reduction in decoding complexity. Sub-optimum soft-decision decoding of a linear block code based on a low-weight sub-trellis can be devised to provide an effective trade-off between error performance and decoding complexity. This chapter presents such a suboptimal decoding algorithm for linear block codes. This decoding algorithm is iterative in nature and based on an optimality test. It has the following important features: (1) a simple method to generate a sequence of candidate code-words, one at a time, for test; (2) a sufficient condition for testing a candidate code-word for optimality; and (3) a low-weight sub-trellis search for finding the most likely (ML) code-word. Lin, Shu and Fossorier, Marc Goddard Space Flight Center NAG5-931; NAG5-2938
Trellises and Trellis Based Decoding Algorithms for Linear Block Codes
Author | : Shu Lin,Tadao Kasami,Toru Fujiwara,Marc Fossorier |
Publsiher | : Springer Science & Business Media |
Total Pages | : 290 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 9781461557456 |
Download Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Book in PDF, Epub and Kindle
As the demand for data reliability increases, coding for error control becomes increasingly important in data transmission systems and has become an integral part of almost all data communication system designs. In recent years, various trellis-based soft-decoding algorithms for linear block codes have been devised. New ideas developed in the study of trellis structure of block codes can be used for improving decoding and analyzing the trellis complexity of convolutional codes. These recent developments provide practicing communication engineers with more choices when designing error control systems. Trellises and Trellis-based Decoding Algorithms for Linear Block Codes combines trellises and trellis-based decoding algorithms for linear codes together in a simple and unified form. The approach is to explain the material in an easily understood manner with minimal mathematical rigor. Trellises and Trellis-based Decoding Algorithms for Linear Block Codes is intended for practicing communication engineers who want to have a fast grasp and understanding of the subject. Only material considered essential and useful for practical applications is included. This book can also be used as a text for advanced courses on the subject.
Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 An Iterative Decoding Algorithm for Linear Block Codes Based on a Low Weight Trellis Search
Author | : National Aeronautics and Space Administration (NASA) |
Publsiher | : Createspace Independent Publishing Platform |
Total Pages | : 24 |
Release | : 2018-07-15 |
Genre | : Electronic Book |
ISBN | : 1722916648 |
Download Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 An Iterative Decoding Algorithm for Linear Block Codes Based on a Low Weight Trellis Search Book in PDF, Epub and Kindle
For long linear block codes, maximum likelihood decoding based on full code trellises would be very hard to implement if not impossible. In this case, we may wish to trade error performance for the reduction in decoding complexity. Sub-optimum soft-decision decoding of a linear block code based on a low-weight sub-trellis can be devised to provide an effective trade-off between error performance and decoding complexity. This chapter presents such a suboptimal decoding algorithm for linear block codes. This decoding algorithm is iterative in nature and based on an optimality test. It has the following important features: (1) a simple method to generate a sequence of candidate code-words, one at a time, for test; (2) a sufficient condition for testing a candidate code-word for optimality; and (3) a low-weight sub-trellis search for finding the most likely (ML) code-word. Lin, Shu and Fossorier, Marc Goddard Space Flight Center NAG5-931; NAG5-2938...
Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 a Recursive Maximum Likelihood Decoding
Author | : National Aeronautics and Space Administration (NASA) |
Publsiher | : Createspace Independent Publishing Platform |
Total Pages | : 30 |
Release | : 2018-07-15 |
Genre | : Electronic Book |
ISBN | : 1722916575 |
Download Trellises and Trellis Based Decoding Algorithms for Linear Block Codes Part 3 a Recursive Maximum Likelihood Decoding Book in PDF, Epub and Kindle
The Viterbi algorithm is indeed a very simple and efficient method of implementing the maximum likelihood decoding. However, if we take advantage of the structural properties in a trellis section, other efficient trellis-based decoding algorithms can be devised. Recently, an efficient trellis-based recursive maximum likelihood decoding (RMLD) algorithm for linear block codes has been proposed. This algorithm is more efficient than the conventional Viterbi algorithm in both computation and hardware requirements. Most importantly, the implementation of this algorithm does not require the construction of the entire code trellis, only some special one-section trellises of relatively small state and branch complexities are needed for constructing path (or branch) metric tables recursively. At the end, there is only one table which contains only the most likely code-word and its metric for a given received sequence r = (r(sub 1), r(sub 2), ..., r(sub n)). This algorithm basically uses the divide and conquer strategy. Furthermore, it allows parallel/pipeline processing of received sequences to speed up decoding. Lin, Shu and Fossorier, Marc Goddard Space Flight Center NAG5-931; NAG5-2938.
Iterative Trellis Decoding for Block Codes
Author | : Frédéric Fontaine (Michel) |
Publsiher | : Unknown |
Total Pages | : 242 |
Release | : 1999 |
Genre | : Electronic Book |
ISBN | : CORNELL:31924086213661 |
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1997 IEEE International Symposium on Information Theory
Author | : IEEE Information Theory Society,IEEE International Symposium on Information Theory |
Publsiher | : IEEE Standards Office |
Total Pages | : 576 |
Release | : 1997-06 |
Genre | : Computers |
ISBN | : UOM:39015036316936 |
Download 1997 IEEE International Symposium on Information Theory Book in PDF, Epub and Kindle
This proceeding covers topics such as universal sourcing code, estimation, cyclic codes, multi-user channels, synchronization, CDMA sequences, pattern recognition and estimation, and signal processing techniques. Applications to communications channels and recovery from faults are described.
IEEE International Symposium on Information Theory
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 578 |
Release | : 1997 |
Genre | : Information theory |
ISBN | : CORNELL:31924080553567 |
Download IEEE International Symposium on Information Theory Book in PDF, Epub and Kindle
High Throughput VLSI Architectures for Iterative Decoders
Author | : Engling Yeo |
Publsiher | : Unknown |
Total Pages | : 372 |
Release | : 2003 |
Genre | : Electronic Book |
ISBN | : UCAL:C3487796 |
Download High Throughput VLSI Architectures for Iterative Decoders Book in PDF, Epub and Kindle