Designing Protograph-Based Quasi-Cyclic Spatially Coupled LDPC Codes With Large Girth
Designing Protograph-Based Quasi-Cyclic Spatially Coupled LDPC Codes With Large Girth
复制标题
设计基于原图的大周长准循环空间耦合 LDPC 码
DOI:
10.1109/tcomm.2020.3001029
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发表时间:
2020-06
影响因子:
8.3
通讯作者:
Qiu Jie
中科院分区:
文献类型:
--
作者:
Mo Shiyuan;Chen Li;Costello Daniel J. Jr.;Mitchell David G. M.;Smar;ache Roxana;Qiu Jie
Spatially coupled (SC) low-density parity-check (LDPC) codes can achieve capacity approaching performance with low message recovery latency when using sliding window (SW) decoding. An SC-LDPC code constructed from a protograph can be generated by first coupling a chain of block protographs and then lifting the coupled protograph using permutation matrices. In this paper, we introduce a systematic design to eliminate 4-cycles in a coupled protograph. Further using a quasi-cyclic (QC) lifting, we introduce a procedure for constructing QC-SC-LDPC codes of girth at least eight. This can be interpreted as a multi-stage graph lifting process that yields a greater flexibility in designing QC-SC-LDPC codes with a large girth than previous approaches. Simulation results show the design leads to improved decoding performance, particularly in the error floor, compared to random constructions. Finally, we determine the minimum coupling width required to eliminate 4-cycles in a coupled protograph.
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DOI:
10.1109/lcomm.2019.2955450
发表时间:
2020-02
期刊:
IEEE Communications Letters
影响因子:
--
作者:
Sima Naseri;A. Banihashemi
通讯作者:
Sima Naseri;A. Banihashemi
DOI:
10.1109/itw.2016.7606831
发表时间:
2016-09
期刊:
2016 IEEE Information Theory Workshop (ITW)
影响因子:
--
作者:
David G. M. Mitchell;A. E. Pusane;M. Lentmaier;D. Costello
通讯作者:
David G. M. Mitchell;A. E. Pusane;M. Lentmaier;D. Costello
影响因子:
8.3
作者:
Kechao Huang;David G. M. Mitchell;Lai Wei;Xiao Ma;D. Costello
通讯作者:
Kechao Huang;David G. M. Mitchell;Lai Wei;Xiao Ma;D. Costello
DOI:
10.1109/tit.2014.2342735
发表时间:
2011-12
期刊:
2011 IEEE Information Theory Workshop
影响因子:
--
作者:
David G. M. Mitchell;R. Smarandache;D. Costello
通讯作者:
David G. M. Mitchell;R. Smarandache;D. Costello
影响因子:
2.5
作者:
Aravind R. Iyengar;M. Papaleo;P. Siegel;J. Wolf;A. Vanelli‐Coralli;G. Corazza
通讯作者:
Aravind R. Iyengar;M. Papaleo;P. Siegel;J. Wolf;A. Vanelli‐Coralli;G. Corazza