Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network
Non-orthogonal multiple access (NOMA) has been extensively studied to improve the performance of the Terrestrial-Satellite Integrated Network (TSIN) on account of the shortage of frequency band resources. In this paper, the terrestrial network and satellite network synergistically provide complete c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/18/6199 |
| _version_ | 1797517220192976896 |
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| author | Yanjun Yan Huihui Xu Ning Zhang Guangjie Han Mingliu Liu |
| author_facet | Yanjun Yan Huihui Xu Ning Zhang Guangjie Han Mingliu Liu |
| author_sort | Yanjun Yan |
| collection | DOAJ |
| description | Non-orthogonal multiple access (NOMA) has been extensively studied to improve the performance of the Terrestrial-Satellite Integrated Network (TSIN) on account of the shortage of frequency band resources. In this paper, the terrestrial network and satellite network synergistically provide complete coverage for ground users, and based on the architecture, we first formulate a constrained optimization problem to maximize the sum rate of the TSIN under the limited spectrum resources. As the terrestrial networks and the satellite network will cause interference to each other, we first investigate the capacity performance of the terrestrial networks and the satellite networks separately, in which the optimal power control factor expression is derived. Then, by constructing the relationship model between user elevation angle, beam angle and distance, we develop a dynamic group pairing schemes to ensure the effective pairing of NOMA users. Based on the user pairing, to obtain the optimal resource allocation, a joint optimization algorithm of power allocation, beam channel and base station channel resource is proposed. Finally, simulation results are provided to evaluate the user paring scheme as well as the total system performance, in comparison with the existing works. |
| first_indexed | 2024-03-10T07:13:42Z |
| format | Article |
| id | doaj.art-a7fa089f628343b18719cef2fc07330c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T07:13:42Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a7fa089f628343b18719cef2fc07330c2023-11-22T15:13:13ZengMDPI AGSensors1424-82202021-09-012118619910.3390/s21186199Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated NetworkYanjun Yan0Huihui Xu1Ning Zhang2Guangjie Han3Mingliu Liu4The 91892 Troops, Sanya 572000, ChinaSchool of Weaponry Engineering, Naval University of Engineering, Wuhan 430072, ChinaSchool of Weaponry Engineering, Naval University of Engineering, Wuhan 430072, ChinaDepartment of Information and Communication Systems, Hohai University, Changzhou 213000, ChinaElectronic Information School, Wuhan University, Wuhan 430072, ChinaNon-orthogonal multiple access (NOMA) has been extensively studied to improve the performance of the Terrestrial-Satellite Integrated Network (TSIN) on account of the shortage of frequency band resources. In this paper, the terrestrial network and satellite network synergistically provide complete coverage for ground users, and based on the architecture, we first formulate a constrained optimization problem to maximize the sum rate of the TSIN under the limited spectrum resources. As the terrestrial networks and the satellite network will cause interference to each other, we first investigate the capacity performance of the terrestrial networks and the satellite networks separately, in which the optimal power control factor expression is derived. Then, by constructing the relationship model between user elevation angle, beam angle and distance, we develop a dynamic group pairing schemes to ensure the effective pairing of NOMA users. Based on the user pairing, to obtain the optimal resource allocation, a joint optimization algorithm of power allocation, beam channel and base station channel resource is proposed. Finally, simulation results are provided to evaluate the user paring scheme as well as the total system performance, in comparison with the existing works.https://www.mdpi.com/1424-8220/21/18/6199terrestrial-satellite integrated networksnon orthogonal multiple accesssatellite networkstochastic geometryuplink |
| spellingShingle | Yanjun Yan Huihui Xu Ning Zhang Guangjie Han Mingliu Liu Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network Sensors terrestrial-satellite integrated networks non orthogonal multiple access satellite network stochastic geometry uplink |
| title | Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network |
| title_full | Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network |
| title_fullStr | Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network |
| title_full_unstemmed | Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network |
| title_short | Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network |
| title_sort | dynamic divide grouping non orthogonal multiple access in terrestrial satellite integrated network |
| topic | terrestrial-satellite integrated networks non orthogonal multiple access satellite network stochastic geometry uplink |
| url | https://www.mdpi.com/1424-8220/21/18/6199 |
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