Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization

Quasi-cyclic low-density parity-check (QC-LDPC) codes constructed by using algebraic approaches, such as finite geometry and finite field, generally have good structural properties and very low error-floors, and facilitate hardware implementation. Irregular QC-LDPC codes constructed from such QC-LDP...

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Main Authors: Han, Guojun, Guan, Yong Liang, Kong, Lingjun
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2016
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Online Access:https://hdl.handle.net/10356/81626
http://hdl.handle.net/10220/40894
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-816262020-03-07T13:57:26Z Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization Han, Guojun Guan, Yong Liang Kong, Lingjun School of Electrical and Electronic Engineering Approximate cycle EMD (ACE) irregular Quasi-cyclic low-density parity-check (QC-LDPC) codes constructed by using algebraic approaches, such as finite geometry and finite field, generally have good structural properties and very low error-floors, and facilitate hardware implementation. Irregular QC-LDPC codes constructed from such QC-LDPC codes by using the masking technique, when decoded with the sum-product algorithm (SPA), have low decoding complexity, but often show early error-floors. In this paper, the relationship of cycle, girth and approximate cycle EMD (ACE) between the masking matrix and masked matrix is investigated, and the ACE algorithm is modified and used to construct the masking matrix for irregular QC-LDPC codes. Simulations demonstrate that the codes constructed by masking with ACE optimization exhibit much improved waterfall performance and lower error floors. ASTAR (Agency for Sci., Tech. and Research, S’pore) 2016-07-04T09:07:33Z 2019-12-06T14:35:12Z 2016-07-04T09:07:33Z 2019-12-06T14:35:12Z 2014 Journal Article Han, G., Guan, Y. L., & Kong, L. (2014). Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization. IEEE Communications Letters, 18(2), 348-351. 1089-7798 https://hdl.handle.net/10356/81626 http://hdl.handle.net/10220/40894 10.1109/LCOMM.2014.010214.132463 en IEEE Communications Letters © 2014 IEEE.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Approximate cycle EMD (ACE)
irregular
spellingShingle Approximate cycle EMD (ACE)
irregular
Han, Guojun
Guan, Yong Liang
Kong, Lingjun
Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
description Quasi-cyclic low-density parity-check (QC-LDPC) codes constructed by using algebraic approaches, such as finite geometry and finite field, generally have good structural properties and very low error-floors, and facilitate hardware implementation. Irregular QC-LDPC codes constructed from such QC-LDPC codes by using the masking technique, when decoded with the sum-product algorithm (SPA), have low decoding complexity, but often show early error-floors. In this paper, the relationship of cycle, girth and approximate cycle EMD (ACE) between the masking matrix and masked matrix is investigated, and the ACE algorithm is modified and used to construct the masking matrix for irregular QC-LDPC codes. Simulations demonstrate that the codes constructed by masking with ACE optimization exhibit much improved waterfall performance and lower error floors.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Han, Guojun
Guan, Yong Liang
Kong, Lingjun
format Article
author Han, Guojun
Guan, Yong Liang
Kong, Lingjun
author_sort Han, Guojun
title Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
title_short Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
title_full Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
title_fullStr Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
title_full_unstemmed Construction of Irregular QC-LDPC Codes via Masking with ACE Optimization
title_sort construction of irregular qc-ldpc codes via masking with ace optimization
publishDate 2016
url https://hdl.handle.net/10356/81626
http://hdl.handle.net/10220/40894
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