Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA
To improved the spectrum efficiency of multibeam satellite system and meet the requirement of multi-access, a robust beamforming and power allocation scheme based on non-orthogonal multiple access (NOMA) was proposed.Under the condition that the imperfect channel state information was known, fi rstl...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Post&Telecom Press Co.,LTD
2021-12-01
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| Series: | 天地一体化信息网络 |
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| Online Access: | http://www.j-sigin.com.cn/zh/article/doi/10.11959/j.issn.2096-8930.2021043/ |
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| _version_ | 1841533940380205056 |
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| author | Pengcheng KAN Zining WANG Huaicong KONG Jian OUYANG Min LIN |
| author_facet | Pengcheng KAN Zining WANG Huaicong KONG Jian OUYANG Min LIN |
| author_sort | Pengcheng KAN |
| collection | DOAJ |
| description | To improved the spectrum efficiency of multibeam satellite system and meet the requirement of multi-access, a robust beamforming and power allocation scheme based on non-orthogonal multiple access (NOMA) was proposed.Under the condition that the imperfect channel state information was known, fi rstly, a power minimization problem subject to probability constraints of users’ quality of service requirement and earth stations’ interference-to-noise ratio was formulated.In order to address the non-convex problem, we then adopted Bernstein inequality to converted the probability constraints into deterministic forms and decomposed the original problem into beamforming sub-problem and power allocation sub-problem, and the robust design was conducted by alternating optimization.Simulation results showed that the proposed scheme has better robustness and eff ectiveness compared with other existing schemes. |
| format | Article |
| id | doaj-art-dce36b26c26c481c90da498c9642001c |
| institution | Kabale University |
| issn | 2096-8930 |
| language | zho |
| publishDate | 2021-12-01 |
| publisher | Post&Telecom Press Co.,LTD |
| record_format | Article |
| series | 天地一体化信息网络 |
| spelling | doaj-art-dce36b26c26c481c90da498c9642001c2025-01-15T02:48:45ZzhoPost&Telecom Press Co.,LTD天地一体化信息网络2096-89302021-12-012535959528629Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMAPengcheng KANZining WANGHuaicong KONGJian OUYANGMin LINTo improved the spectrum efficiency of multibeam satellite system and meet the requirement of multi-access, a robust beamforming and power allocation scheme based on non-orthogonal multiple access (NOMA) was proposed.Under the condition that the imperfect channel state information was known, fi rstly, a power minimization problem subject to probability constraints of users’ quality of service requirement and earth stations’ interference-to-noise ratio was formulated.In order to address the non-convex problem, we then adopted Bernstein inequality to converted the probability constraints into deterministic forms and decomposed the original problem into beamforming sub-problem and power allocation sub-problem, and the robust design was conducted by alternating optimization.Simulation results showed that the proposed scheme has better robustness and eff ectiveness compared with other existing schemes.http://www.j-sigin.com.cn/zh/article/doi/10.11959/j.issn.2096-8930.2021043/multibeam satellite systemnon-orthogonal multiple accessprobability constraintpower allocationbeamforming |
| spellingShingle | Pengcheng KAN Zining WANG Huaicong KONG Jian OUYANG Min LIN Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA 天地一体化信息网络 multibeam satellite system non-orthogonal multiple access probability constraint power allocation beamforming |
| title | Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA |
| title_full | Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA |
| title_fullStr | Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA |
| title_full_unstemmed | Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA |
| title_short | Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA |
| title_sort | robust beamforming algorithm for multibeam satellite communication based on downlink noma |
| topic | multibeam satellite system non-orthogonal multiple access probability constraint power allocation beamforming |
| url | http://www.j-sigin.com.cn/zh/article/doi/10.11959/j.issn.2096-8930.2021043/ |
| work_keys_str_mv | AT pengchengkan robustbeamformingalgorithmformultibeamsatellitecommunicationbasedondownlinknoma AT ziningwang robustbeamformingalgorithmformultibeamsatellitecommunicationbasedondownlinknoma AT huaicongkong robustbeamformingalgorithmformultibeamsatellitecommunicationbasedondownlinknoma AT jianouyang robustbeamformingalgorithmformultibeamsatellitecommunicationbasedondownlinknoma AT minlin robustbeamformingalgorithmformultibeamsatellitecommunicationbasedondownlinknoma |