Spatially-Coupled Nearly-Regular LDPC Code Ensembles for Rate-Flexible Code Design
(2014) IEEE International Conference on Communications (ICC), 2014- Abstract
- Spatially coupled regular LDPC code ensembles have outstanding performance with belief propagation decoding and can perform close to the Shannon limit. In this paper we investigate the suitability of coupled regular LDPC code ensembles with respect to rate-flexibility. Regular ensembles with good performance and low complexity exist for a variety of specific code rates. On the other hand it can be observed that outside this set of favorable rational rates the complexity and performance become unreasonably high. We therefore propose ensembles with slight irregularity that allow us to smoothly cover the complete range of rational rates. Our simple construction allows a performance with negligible gap to the Shannon limit while maintaining... (More)
- Spatially coupled regular LDPC code ensembles have outstanding performance with belief propagation decoding and can perform close to the Shannon limit. In this paper we investigate the suitability of coupled regular LDPC code ensembles with respect to rate-flexibility. Regular ensembles with good performance and low complexity exist for a variety of specific code rates. On the other hand it can be observed that outside this set of favorable rational rates the complexity and performance become unreasonably high. We therefore propose ensembles with slight irregularity that allow us to smoothly cover the complete range of rational rates. Our simple construction allows a performance with negligible gap to the Shannon limit while maintaining complexity as low as for the best regular code ensembles. At the same time the construction guarantees that asymptotically the minimum distance grows linearly with the length of the coupled blocks. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4248121
- author
- Nitzold, Walter ; Lentmaier, Michael LU and Fettweis, Gerhard
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- LDPC codes, spatial coupling, LDPC convolutional codes
- host publication
- [Host publication title missing]
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE International Conference on Communications (ICC), 2014
- conference location
- Sydney, Australia
- conference dates
- 2014-06-10 - 2014-06-14
- external identifiers
-
- scopus:84907001186
- language
- English
- LU publication?
- yes
- id
- 5c1d6392-823f-47ac-9a3e-5ec271dd11be (old id 4248121)
- date added to LUP
- 2016-04-04 11:41:46
- date last changed
- 2022-03-15 23:42:00
@inproceedings{5c1d6392-823f-47ac-9a3e-5ec271dd11be,
abstract = {{Spatially coupled regular LDPC code ensembles have outstanding performance with belief propagation decoding and can perform close to the Shannon limit. In this paper we investigate the suitability of coupled regular LDPC code ensembles with respect to rate-flexibility. Regular ensembles with good performance and low complexity exist for a variety of specific code rates. On the other hand it can be observed that outside this set of favorable rational rates the complexity and performance become unreasonably high. We therefore propose ensembles with slight irregularity that allow us to smoothly cover the complete range of rational rates. Our simple construction allows a performance with negligible gap to the Shannon limit while maintaining complexity as low as for the best regular code ensembles. At the same time the construction guarantees that asymptotically the minimum distance grows linearly with the length of the coupled blocks.}},
author = {{Nitzold, Walter and Lentmaier, Michael and Fettweis, Gerhard}},
booktitle = {{[Host publication title missing]}},
keywords = {{LDPC codes; spatial coupling; LDPC convolutional codes}},
language = {{eng}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Spatially-Coupled Nearly-Regular LDPC Code Ensembles for Rate-Flexible Code Design}},
url = {{https://lup.lub.lu.se/search/files/5833677/4468961.pdf}},
year = {{2014}},
}