Impact of overload factor on uplink SCMA system
Sparse code multiple access (SCMA) is regarded as a promising multiple access technology for 5G because of its excellent performance.One of the major challenges that 5G networks are facing is the massive connectivity in terms of both data volume and the number of devices,thus SCMA must be capable of...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2018-06-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2018115/ |
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| _version_ | 1841530389983657984 |
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| author | Hongyang ZHANG Changliang ZHENG Yu LU Huaping LIU |
| author_facet | Hongyang ZHANG Changliang ZHENG Yu LU Huaping LIU |
| author_sort | Hongyang ZHANG |
| collection | DOAJ |
| description | Sparse code multiple access (SCMA) is regarded as a promising multiple access technology for 5G because of its excellent performance.One of the major challenges that 5G networks are facing is the massive connectivity in terms of both data volume and the number of devices,thus SCMA must be capable of coping with transmission overload.Analyzing the performance of the uplink SCMA system in overloading scenarios was focused on.At first,the influence of the overloading factor on the detection and decoding complexities and error performances of the uplink SCMA system were analyzed.Then,by establishing the relationship between the overloading factor and the average sum-rate,the impact of the overloading factor on the transmission rate of the uplink SCMA system was analyzed.Extensive numerical results are provided to verify the accuracy and insights derivable from the analytical results. |
| format | Article |
| id | doaj-art-9b7071a1852041dfbba9d3efce85860d |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2018-06-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-9b7071a1852041dfbba9d3efce85860d2025-01-15T03:04:39ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012018-06-0134647159595407Impact of overload factor on uplink SCMA systemHongyang ZHANGChangliang ZHENGYu LUHuaping LIUSparse code multiple access (SCMA) is regarded as a promising multiple access technology for 5G because of its excellent performance.One of the major challenges that 5G networks are facing is the massive connectivity in terms of both data volume and the number of devices,thus SCMA must be capable of coping with transmission overload.Analyzing the performance of the uplink SCMA system in overloading scenarios was focused on.At first,the influence of the overloading factor on the detection and decoding complexities and error performances of the uplink SCMA system were analyzed.Then,by establishing the relationship between the overloading factor and the average sum-rate,the impact of the overloading factor on the transmission rate of the uplink SCMA system was analyzed.Extensive numerical results are provided to verify the accuracy and insights derivable from the analytical results.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2018115/5Gsparse code multiple accessmessage passing algorithmoverloading factor |
| spellingShingle | Hongyang ZHANG Changliang ZHENG Yu LU Huaping LIU Impact of overload factor on uplink SCMA system Dianxin kexue 5G sparse code multiple access message passing algorithm overloading factor |
| title | Impact of overload factor on uplink SCMA system |
| title_full | Impact of overload factor on uplink SCMA system |
| title_fullStr | Impact of overload factor on uplink SCMA system |
| title_full_unstemmed | Impact of overload factor on uplink SCMA system |
| title_short | Impact of overload factor on uplink SCMA system |
| title_sort | impact of overload factor on uplink scma system |
| topic | 5G sparse code multiple access message passing algorithm overloading factor |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2018115/ |
| work_keys_str_mv | AT hongyangzhang impactofoverloadfactoronuplinkscmasystem AT changliangzheng impactofoverloadfactoronuplinkscmasystem AT yulu impactofoverloadfactoronuplinkscmasystem AT huapingliu impactofoverloadfactoronuplinkscmasystem |