Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling
In this letter, a novel scheduling scheme for decoding irregular low-density parity-check (LDPC) code, based on the column weight of variable nodes in the code graph, is introduced. In this scheme, the irregular LDPC code is decoded using the shuffled belief-propagation (BP) algorithm by selecti...
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sg-ntu-dr.10356-813602020-03-07T13:57:24Z Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling Aslam, Chaudhry Adnan Guan, Yong Liang Cai, Kui School of Electrical and Electronic Engineering Belief-propagation Rayleigh fading LDPC codes Shuffled decoding Column-weight Decoding schedule AWGN In this letter, a novel scheduling scheme for decoding irregular low-density parity-check (LDPC) code, based on the column weight of variable nodes in the code graph, is introduced. In this scheme, the irregular LDPC code is decoded using the shuffled belief-propagation (BP) algorithm by selecting the variable nodes in descending order of their column weight. Via numerical simulation, it is shown that the proposed highto- low column-weight based decoding schedule can noticeably increase the convergence speed at medium to high signal-to-noise ratio (SNR) over AWGN and Rayleigh fading channels without introducing additional complexity or error rate degradation. Furthermore, it is found that the improvement in decoding convergence is proportional to the maximum column-weight in the code graph. Accepted version 2015-12-30T01:34:30Z 2019-12-06T14:29:14Z 2015-12-30T01:34:30Z 2019-12-06T14:29:14Z 2015 Journal Article Aslam, C. A., Guan, Y. L., & Cai, K. (2015). Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling. IEEE Communications Letters, 19(8), 1283-1286. 1089-7798 https://hdl.handle.net/10356/81360 http://hdl.handle.net/10220/39236 10.1109/LCOMM.2015.2444381 en IEEE Communications Letters © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/LCOMM.2015.2444381]. 4 p. application/pdf |
| institution |
Nanyang Technological University |
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NTU Library |
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Singapore |
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| language |
English |
| topic |
Belief-propagation Rayleigh fading LDPC codes Shuffled decoding Column-weight Decoding schedule AWGN |
| spellingShingle |
Belief-propagation Rayleigh fading LDPC codes Shuffled decoding Column-weight Decoding schedule AWGN Aslam, Chaudhry Adnan Guan, Yong Liang Cai, Kui Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| description |
In this letter, a novel scheduling scheme for decoding
irregular low-density parity-check (LDPC) code, based on the
column weight of variable nodes in the code graph, is introduced.
In this scheme, the irregular LDPC code is decoded using
the shuffled belief-propagation (BP) algorithm by selecting the
variable nodes in descending order of their column weight.
Via numerical simulation, it is shown that the proposed highto-
low column-weight based decoding schedule can noticeably
increase the convergence speed at medium to high signal-to-noise
ratio (SNR) over AWGN and Rayleigh fading channels without
introducing additional complexity or error rate degradation.
Furthermore, it is found that the improvement in decoding
convergence is proportional to the maximum column-weight in
the code graph. |
| author2 |
School of Electrical and Electronic Engineering |
| author_facet |
School of Electrical and Electronic Engineering Aslam, Chaudhry Adnan Guan, Yong Liang Cai, Kui |
| format |
Article |
| author |
Aslam, Chaudhry Adnan Guan, Yong Liang Cai, Kui |
| author_sort |
Aslam, Chaudhry Adnan |
| title |
Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| title_short |
Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| title_full |
Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| title_fullStr |
Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| title_full_unstemmed |
Improving the Belief-Propagation Convergence of Irregular LDPC Codes Using Column-Weight Based Scheduling |
| title_sort |
improving the belief-propagation convergence of irregular ldpc codes using column-weight based scheduling |
| publishDate |
2015 |
| url |
https://hdl.handle.net/10356/81360 http://hdl.handle.net/10220/39236 |
| _version_ |
1681046072823119872 |