Systematic Doping of SC-LDPC Codes
(2022) 2022 IEEE International Symposium on Information Theory, ISIT 2022 p.536-541- Abstract
In this paper, we examine variable node (VN) doping to mitigate the error propagation problem in sliding window decoding (SWD) of spatially coupled LDPC (SC-LDPC) codes from the point of view of the encoding process. More specifically, in order to simplify the process of generating an encoded sequence with some number of doped code bits, we propose to employ systematic encoding and to limit doping to systematic bits only. Numerical results show that doping of systematic bits only achieves comparable performance to employing general (nonsystematic) encoding and full doping of all the code bits at each doping position, while benefiting from a much simpler encoding process. We then show that the inherent rate loss due to doping can be... (More)
In this paper, we examine variable node (VN) doping to mitigate the error propagation problem in sliding window decoding (SWD) of spatially coupled LDPC (SC-LDPC) codes from the point of view of the encoding process. More specifically, in order to simplify the process of generating an encoded sequence with some number of doped code bits, we propose to employ systematic encoding and to limit doping to systematic bits only. Numerical results show that doping of systematic bits only achieves comparable performance to employing general (nonsystematic) encoding and full doping of all the code bits at each doping position, while benefiting from a much simpler encoding process. We then show that the inherent rate loss due to doping can be reduced by doping only a fraction of the variable nodes at each doping position with only a minor impact on performance.
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- author
- Zhu, Min ; Mitchell, David G.M. ; Lentmaier, Michael LU and Costello, Daniel J.
- organization
- publishing date
- 2022
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- decoder error propagation, fractional doping, sliding window decoding, systematic doping, variable node doping
- host publication
- 2022 IEEE International Symposium on Information Theory, ISIT 2022
- pages
- 6 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 2022 IEEE International Symposium on Information Theory, ISIT 2022
- conference location
- Espoo, Finland
- conference dates
- 2022-06-26 - 2022-07-01
- external identifiers
-
- scopus:85136282243
- ISBN
- 9781665421591
- DOI
- 10.1109/ISIT50566.2022.9834590
- language
- English
- LU publication?
- yes
- id
- 32f19f3e-7035-4647-8a28-6a6a17470510
- date added to LUP
- 2022-09-12 14:51:40
- date last changed
- 2023-11-21 11:16:59
@inproceedings{32f19f3e-7035-4647-8a28-6a6a17470510, abstract = {{<p>In this paper, we examine variable node (VN) doping to mitigate the error propagation problem in sliding window decoding (SWD) of spatially coupled LDPC (SC-LDPC) codes from the point of view of the encoding process. More specifically, in order to simplify the process of generating an encoded sequence with some number of doped code bits, we propose to employ systematic encoding and to limit doping to systematic bits only. Numerical results show that doping of systematic bits only achieves comparable performance to employing general (nonsystematic) encoding and full doping of all the code bits at each doping position, while benefiting from a much simpler encoding process. We then show that the inherent rate loss due to doping can be reduced by doping only a fraction of the variable nodes at each doping position with only a minor impact on performance.</p>}}, author = {{Zhu, Min and Mitchell, David G.M. and Lentmaier, Michael and Costello, Daniel J.}}, booktitle = {{2022 IEEE International Symposium on Information Theory, ISIT 2022}}, isbn = {{9781665421591}}, keywords = {{decoder error propagation; fractional doping; sliding window decoding; systematic doping; variable node doping}}, language = {{eng}}, pages = {{536--541}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Systematic Doping of SC-LDPC Codes}}, url = {{http://dx.doi.org/10.1109/ISIT50566.2022.9834590}}, doi = {{10.1109/ISIT50566.2022.9834590}}, year = {{2022}}, }