In this letter, we propose a multi-stage decoding scheme with post-processing for low-density parity-check (LDPC) codes, which remedies the rapid performance degradation in the high signal-to-noise ratio (SNR) range known as error floor. In the proposed scheme, the unsuccessfully decoded words of the previous decoding stage are re-decoded by manipulating the received log-likelihood ratios (LLRs) of the properly selected variable nodes. Two effective criteria for selecting the probably erroneous variable nodes are also presented. Numerical results show that the proposed scheme can correct most of the unsuccessfully decoded words of the first stage having oscillatory behavior, which are regarded as a main cause of the error floor.
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Beomkyu SHIN, Hosung PARK, Jong-Seon NO, Habong CHUNG, "Multi-Stage Decoding Scheme with Post-Processing for LDPC Codes to Lower the Error Floors" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 8, pp. 2375-2377, August 2011, doi: 10.1587/transcom.E94.B.2375.
Abstract: In this letter, we propose a multi-stage decoding scheme with post-processing for low-density parity-check (LDPC) codes, which remedies the rapid performance degradation in the high signal-to-noise ratio (SNR) range known as error floor. In the proposed scheme, the unsuccessfully decoded words of the previous decoding stage are re-decoded by manipulating the received log-likelihood ratios (LLRs) of the properly selected variable nodes. Two effective criteria for selecting the probably erroneous variable nodes are also presented. Numerical results show that the proposed scheme can correct most of the unsuccessfully decoded words of the first stage having oscillatory behavior, which are regarded as a main cause of the error floor.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.2375/_p
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@ARTICLE{e94-b_8_2375,
author={Beomkyu SHIN, Hosung PARK, Jong-Seon NO, Habong CHUNG, },
journal={IEICE TRANSACTIONS on Communications},
title={Multi-Stage Decoding Scheme with Post-Processing for LDPC Codes to Lower the Error Floors},
year={2011},
volume={E94-B},
number={8},
pages={2375-2377},
abstract={In this letter, we propose a multi-stage decoding scheme with post-processing for low-density parity-check (LDPC) codes, which remedies the rapid performance degradation in the high signal-to-noise ratio (SNR) range known as error floor. In the proposed scheme, the unsuccessfully decoded words of the previous decoding stage are re-decoded by manipulating the received log-likelihood ratios (LLRs) of the properly selected variable nodes. Two effective criteria for selecting the probably erroneous variable nodes are also presented. Numerical results show that the proposed scheme can correct most of the unsuccessfully decoded words of the first stage having oscillatory behavior, which are regarded as a main cause of the error floor.},
keywords={},
doi={10.1587/transcom.E94.B.2375},
ISSN={1745-1345},
month={August},}
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TY - JOUR
TI - Multi-Stage Decoding Scheme with Post-Processing for LDPC Codes to Lower the Error Floors
T2 - IEICE TRANSACTIONS on Communications
SP - 2375
EP - 2377
AU - Beomkyu SHIN
AU - Hosung PARK
AU - Jong-Seon NO
AU - Habong CHUNG
PY - 2011
DO - 10.1587/transcom.E94.B.2375
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2011
AB - In this letter, we propose a multi-stage decoding scheme with post-processing for low-density parity-check (LDPC) codes, which remedies the rapid performance degradation in the high signal-to-noise ratio (SNR) range known as error floor. In the proposed scheme, the unsuccessfully decoded words of the previous decoding stage are re-decoded by manipulating the received log-likelihood ratios (LLRs) of the properly selected variable nodes. Two effective criteria for selecting the probably erroneous variable nodes are also presented. Numerical results show that the proposed scheme can correct most of the unsuccessfully decoded words of the first stage having oscillatory behavior, which are regarded as a main cause of the error floor.
ER -