Jointed LDPC codes design for half-duplex relay channels
In order to increase the coding gain of decode-and-forward half-duplex relay channel, a jointed LDPC coding structure and its corresponding optimization scheme was proposed. Novel structure made the subcodes of both source and relay nodes as parts of the overall code. Using the messages from the sou...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2013-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.03.017/ |
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| _version_ | 1841539819356815360 |
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| author | Zi-qiang CHEN Shan OUYANG Hai-lin XIAO Yue-lei XIE |
| author_facet | Zi-qiang CHEN Shan OUYANG Hai-lin XIAO Yue-lei XIE |
| author_sort | Zi-qiang CHEN |
| collection | DOAJ |
| description | In order to increase the coding gain of decode-and-forward half-duplex relay channel, a jointed LDPC coding structure and its corresponding optimization scheme was proposed. Novel structure made the subcodes of both source and relay nodes as parts of the overall code. Using the messages from the source and the relay, the destination could decode the information of the source and relay nodes simultaneously. To analyze the asymptotic coding gain of jointed LDPC codes, the iterative decoding convergence condition was derived in AWGN channel. Combining the iterative decoding convergence condition and the degree distribution constraint, the optimization problem of the jointed LDPC code degree distribution was presented. The simulation results show that jointed LDPC codes outperform both BE-LDPC codes and SP codes. |
| format | Article |
| id | doaj-art-8a637ba7c8554630b226cc4b5b6eb9b0 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2013-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-8a637ba7c8554630b226cc4b5b6eb9b02025-01-14T06:34:53ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2013-03-013413414059670992Jointed LDPC codes design for half-duplex relay channelsZi-qiang CHENShan OUYANGHai-lin XIAOYue-lei XIEIn order to increase the coding gain of decode-and-forward half-duplex relay channel, a jointed LDPC coding structure and its corresponding optimization scheme was proposed. Novel structure made the subcodes of both source and relay nodes as parts of the overall code. Using the messages from the source and the relay, the destination could decode the information of the source and relay nodes simultaneously. To analyze the asymptotic coding gain of jointed LDPC codes, the iterative decoding convergence condition was derived in AWGN channel. Combining the iterative decoding convergence condition and the degree distribution constraint, the optimization problem of the jointed LDPC code degree distribution was presented. The simulation results show that jointed LDPC codes outperform both BE-LDPC codes and SP codes.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.03.017/LDPC codesdecode-and-forwardrelay channeldensity evolution |
| spellingShingle | Zi-qiang CHEN Shan OUYANG Hai-lin XIAO Yue-lei XIE Jointed LDPC codes design for half-duplex relay channels Tongxin xuebao LDPC codes decode-and-forward relay channel density evolution |
| title | Jointed LDPC codes design for half-duplex relay channels |
| title_full | Jointed LDPC codes design for half-duplex relay channels |
| title_fullStr | Jointed LDPC codes design for half-duplex relay channels |
| title_full_unstemmed | Jointed LDPC codes design for half-duplex relay channels |
| title_short | Jointed LDPC codes design for half-duplex relay channels |
| title_sort | jointed ldpc codes design for half duplex relay channels |
| topic | LDPC codes decode-and-forward relay channel density evolution |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.03.017/ |
| work_keys_str_mv | AT ziqiangchen jointedldpccodesdesignforhalfduplexrelaychannels AT shanouyang jointedldpccodesdesignforhalfduplexrelaychannels AT hailinxiao jointedldpccodesdesignforhalfduplexrelaychannels AT yueleixie jointedldpccodesdesignforhalfduplexrelaychannels |