HARQ scheme for sparse code multiple access based on network coding
To fulfill the stringent reliability and throughput demand of the beyond-5G and the forthcoming 6G, a novel network coding (NC) based hybrid automatic retransmission request (HARQ) for low-density parity check (LDPC) coded SCMA was proposed.Two incorrectly received packets from different time slots...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2022-09-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022174/ |
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| _version_ | 1841539965011361792 |
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| author | Ke LAI Jing LEI Wei LIU Lei WEN |
| author_facet | Ke LAI Jing LEI Wei LIU Lei WEN |
| author_sort | Ke LAI |
| collection | DOAJ |
| description | To fulfill the stringent reliability and throughput demand of the beyond-5G and the forthcoming 6G, a novel network coding (NC) based hybrid automatic retransmission request (HARQ) for low-density parity check (LDPC) coded SCMA was proposed.Two incorrectly received packets from different time slots were retransmitted by using NC principle under multi-user scenario.By doing so, the information came from two packets could be conveyed in one retransmission.Moreover, extra coding gain could be attained at the receiver.Furthermore, since the similarity between SCMA detector and LDPC decoder, and the one check node feature of NC decoder, a SCMA, LDPC and NC joint decoder based on message passing algorithm (MPA) was proposed.The proposed scheme could fully utilize the soft messages come from current and previous transmissions, and thus exploiting satisfied coding gain from NC.Simulation results show that the superiority of the proposed novel HARQ scheme for SCMA over the conventional HARQ on both throughput and reliability. |
| format | Article |
| id | doaj-art-3cc1491641e542d6a9bf4c0cc83536f9 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2022-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-3cc1491641e542d6a9bf4c0cc83536f92025-01-14T06:28:44ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2022-09-0143576959391457HARQ scheme for sparse code multiple access based on network codingKe LAIJing LEIWei LIULei WENTo fulfill the stringent reliability and throughput demand of the beyond-5G and the forthcoming 6G, a novel network coding (NC) based hybrid automatic retransmission request (HARQ) for low-density parity check (LDPC) coded SCMA was proposed.Two incorrectly received packets from different time slots were retransmitted by using NC principle under multi-user scenario.By doing so, the information came from two packets could be conveyed in one retransmission.Moreover, extra coding gain could be attained at the receiver.Furthermore, since the similarity between SCMA detector and LDPC decoder, and the one check node feature of NC decoder, a SCMA, LDPC and NC joint decoder based on message passing algorithm (MPA) was proposed.The proposed scheme could fully utilize the soft messages come from current and previous transmissions, and thus exploiting satisfied coding gain from NC.Simulation results show that the superiority of the proposed novel HARQ scheme for SCMA over the conventional HARQ on both throughput and reliability.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022174/sparse code multiple accesshybrid automatic retransmission requestnetwork codinglow-density parity checkthroughput |
| spellingShingle | Ke LAI Jing LEI Wei LIU Lei WEN HARQ scheme for sparse code multiple access based on network coding Tongxin xuebao sparse code multiple access hybrid automatic retransmission request network coding low-density parity check throughput |
| title | HARQ scheme for sparse code multiple access based on network coding |
| title_full | HARQ scheme for sparse code multiple access based on network coding |
| title_fullStr | HARQ scheme for sparse code multiple access based on network coding |
| title_full_unstemmed | HARQ scheme for sparse code multiple access based on network coding |
| title_short | HARQ scheme for sparse code multiple access based on network coding |
| title_sort | harq scheme for sparse code multiple access based on network coding |
| topic | sparse code multiple access hybrid automatic retransmission request network coding low-density parity check throughput |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022174/ |
| work_keys_str_mv | AT kelai harqschemeforsparsecodemultipleaccessbasedonnetworkcoding AT jinglei harqschemeforsparsecodemultipleaccessbasedonnetworkcoding AT weiliu harqschemeforsparsecodemultipleaccessbasedonnetworkcoding AT leiwen harqschemeforsparsecodemultipleaccessbasedonnetworkcoding |