Optimization of multiple access mode for large-scale constellation networking communication
In the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the previous multiple access technology can no longer...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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EDP Sciences
2023-08-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2023/04/jnwpu2023414p644/jnwpu2023414p644.html |
| _version_ | 1797343866780647424 |
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| author | GUO Xiaoxu XU Zhaobin XU Kedi ZHU Yaowei JIN Zhonghe |
| author_facet | GUO Xiaoxu XU Zhaobin XU Kedi ZHU Yaowei JIN Zhonghe |
| author_sort | GUO Xiaoxu |
| collection | DOAJ |
| description | In the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the previous multiple access technology can no longer meet the network capacity requirements of large-scale constellations. In order to meet the requirements of massive connections of satellite nodes in large-scale constellation for new networking communication methods, this paper establishes a sparse spread spectrum inter-satellite communication system with sparse code multiple access (SCMA) as the core. At the same time, the channel characteristics of large-scale constellation are analyzed and the corresponding inter satellite channel model is established in MATLAB. Based on this channel model, the performance of the system is simulated. The simulation results show that under the same signal energy to noise ratio, the sparse spread spectrum inter-satellite communication system established in this paper has better BER characteristics compared with orthogonal frequency division multiple access (OFDMA) and code division multiple access (CDMA). In addition, the threshold signal energy to noise ratio of the system is more than 2 dB better than that of CDMA technology, and the utilization rate of time-frequency resources is 50% higher than that of OFDMA technology. |
| first_indexed | 2024-03-08T10:54:02Z |
| format | Article |
| id | doaj.art-2d838f106e89415f9d93e8be4b848034 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-08T10:54:02Z |
| publishDate | 2023-08-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-2d838f106e89415f9d93e8be4b8480342024-01-26T16:39:23ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252023-08-0141464465310.1051/jnwpu/20234140644jnwpu2023414p644Optimization of multiple access mode for large-scale constellation networking communicationGUO XiaoxuXU ZhaobinXU KediZHU YaoweiJIN ZhongheIn the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the previous multiple access technology can no longer meet the network capacity requirements of large-scale constellations. In order to meet the requirements of massive connections of satellite nodes in large-scale constellation for new networking communication methods, this paper establishes a sparse spread spectrum inter-satellite communication system with sparse code multiple access (SCMA) as the core. At the same time, the channel characteristics of large-scale constellation are analyzed and the corresponding inter satellite channel model is established in MATLAB. Based on this channel model, the performance of the system is simulated. The simulation results show that under the same signal energy to noise ratio, the sparse spread spectrum inter-satellite communication system established in this paper has better BER characteristics compared with orthogonal frequency division multiple access (OFDMA) and code division multiple access (CDMA). In addition, the threshold signal energy to noise ratio of the system is more than 2 dB better than that of CDMA technology, and the utilization rate of time-frequency resources is 50% higher than that of OFDMA technology.https://www.jnwpu.org/articles/jnwpu/full_html/2023/04/jnwpu2023414p644/jnwpu2023414p644.html星座组网信道模型星间链路网络容量稀疏扩频 |
| spellingShingle | GUO Xiaoxu XU Zhaobin XU Kedi ZHU Yaowei JIN Zhonghe Optimization of multiple access mode for large-scale constellation networking communication Xibei Gongye Daxue Xuebao 星座组网 信道模型 星间链路 网络容量 稀疏扩频 |
| title | Optimization of multiple access mode for large-scale constellation networking communication |
| title_full | Optimization of multiple access mode for large-scale constellation networking communication |
| title_fullStr | Optimization of multiple access mode for large-scale constellation networking communication |
| title_full_unstemmed | Optimization of multiple access mode for large-scale constellation networking communication |
| title_short | Optimization of multiple access mode for large-scale constellation networking communication |
| title_sort | optimization of multiple access mode for large scale constellation networking communication |
| topic | 星座组网 信道模型 星间链路 网络容量 稀疏扩频 |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2023/04/jnwpu2023414p644/jnwpu2023414p644.html |
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