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Enhancing LDPC code performance using pilot bits
Citation
Adolph, JF and Olivier, JC and Salmon, BP, Enhancing LDPC code performance using pilot bits, 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 19-24 April 2015, Brisbane, Australia, pp. 2994-2998. ISBN 978-1-4673-6997-8 (2015) [Refereed Conference Paper]
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Copyright Statement
Copyright 2015 IEEE
Official URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp...
DOI: doi:10.1109/ICASSP.2015.7178520
Abstract
Creating the optimal bipartite graph and decoding of a
Low Density Parity Check (LDPC) codeword on it is deemed
an NP-complete problem. Much work in the last decade has
gone into proper construction of LDPC codes with maximum
girth and optimized stopping sets; to ensure the BER
approaches channel capacity. When an edge alteration to the
graph is proposed, it completely changes the performance of
the graph and usually leads to the re-analysis of the entire
graph’s properties. In this work we propose a method of
lowering the error floor experienced in an LDPC code by intelligently
inserting a set of known bits in the message frame.
This deactivates paths in the graph located around trapping
sets without modification of edges in the graph, and provides
high log-likelihood information to the induced sub-graph for
improved performance.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | channel coding, linear codes, parity check codes, iterative decoding |
| Research Division: | Engineering |
| Research Group: | Electrical and Electronic Engineering |
| Research Field: | Signal Processing |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in Engineering |
| Author: | Adolph, JF (Mr Jack Adolph) |
| Author: | Olivier, JC (Professor JC Olivier) |
| Author: | Salmon, BP (Dr Brian Salmon) |
| ID Code: | 105827 |
| Year Published: | 2015 |
| Deposited By: | Engineering |
| Deposited On: | 2016-01-15 |
| Last Modified: | 2017-11-06 |
| Downloads: | 0 |
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