On sum-rate maximization in downlink UAV-aided RSMA systems
The synergy of uncrewed aerial vehicles (UAVs) and the rate-splitting multiple access (RSMA) technique has thrived as a crucial enabler for multi-user broadband sixth-generation networks. This paper investigates a UAV-aided RSMA downlink communication system considering user mobility and the uniform...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | ICT Express |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405959523000280 |
| _version_ | 1797305207570300928 |
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| author | Duc-Thien Hua Quang Tuan Do Nhu-Ngoc Dao Sungrae Cho |
| author_facet | Duc-Thien Hua Quang Tuan Do Nhu-Ngoc Dao Sungrae Cho |
| author_sort | Duc-Thien Hua |
| collection | DOAJ |
| description | The synergy of uncrewed aerial vehicles (UAVs) and the rate-splitting multiple access (RSMA) technique has thrived as a crucial enabler for multi-user broadband sixth-generation networks. This paper investigates a UAV-aided RSMA downlink communication system considering user mobility and the uniform rectangular array antenna design. In particular, the sum-rate maximization problem is formulated where the UAV beamforming matrix, common rate allocation, and UAV trajectory design are jointly optimized. The deep deterministic policy gradient (DDPG) approach has been proposed to address the nonconcave objective function. In addition, the safe action shaping technique is incorporated into the algorithm to satisfy the variable constraints of the problem statement. The numerical simulation results demonstrated that the proposed approach outperformed other benchmark schemes in various settings of transmit powers and fading environment levels. |
| first_indexed | 2024-03-08T00:22:33Z |
| format | Article |
| id | doaj.art-0c0310b7563c43a58fc1ade02b861aa5 |
| institution | Directory Open Access Journal |
| issn | 2405-9595 |
| language | English |
| last_indexed | 2024-03-08T00:22:33Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | ICT Express |
| spelling | doaj.art-0c0310b7563c43a58fc1ade02b861aa52024-02-16T04:29:43ZengElsevierICT Express2405-95952024-02-011011521On sum-rate maximization in downlink UAV-aided RSMA systemsDuc-Thien Hua0Quang Tuan Do1Nhu-Ngoc Dao2Sungrae Cho3School of Computer Science and Engineering, Chung-Ang University, Seoul 06974, South KoreaSchool of Computer Science and Engineering, Chung-Ang University, Seoul 06974, South KoreaFaculty of Computer Science, Ho Chi Minh City Open University, Ho Chi Minh City 70000, Vietnam; Corresponding authors.School of Computer Science and Engineering, Chung-Ang University, Seoul 06974, South Korea; Corresponding authors.The synergy of uncrewed aerial vehicles (UAVs) and the rate-splitting multiple access (RSMA) technique has thrived as a crucial enabler for multi-user broadband sixth-generation networks. This paper investigates a UAV-aided RSMA downlink communication system considering user mobility and the uniform rectangular array antenna design. In particular, the sum-rate maximization problem is formulated where the UAV beamforming matrix, common rate allocation, and UAV trajectory design are jointly optimized. The deep deterministic policy gradient (DDPG) approach has been proposed to address the nonconcave objective function. In addition, the safe action shaping technique is incorporated into the algorithm to satisfy the variable constraints of the problem statement. The numerical simulation results demonstrated that the proposed approach outperformed other benchmark schemes in various settings of transmit powers and fading environment levels.http://www.sciencedirect.com/science/article/pii/S2405959523000280Rate-splitting multiple access (RSMA)Uncrewed aerial vehicle (UAV) trajectoryDeep reinforcement learningUser mobility |
| spellingShingle | Duc-Thien Hua Quang Tuan Do Nhu-Ngoc Dao Sungrae Cho On sum-rate maximization in downlink UAV-aided RSMA systems ICT Express Rate-splitting multiple access (RSMA) Uncrewed aerial vehicle (UAV) trajectory Deep reinforcement learning User mobility |
| title | On sum-rate maximization in downlink UAV-aided RSMA systems |
| title_full | On sum-rate maximization in downlink UAV-aided RSMA systems |
| title_fullStr | On sum-rate maximization in downlink UAV-aided RSMA systems |
| title_full_unstemmed | On sum-rate maximization in downlink UAV-aided RSMA systems |
| title_short | On sum-rate maximization in downlink UAV-aided RSMA systems |
| title_sort | on sum rate maximization in downlink uav aided rsma systems |
| topic | Rate-splitting multiple access (RSMA) Uncrewed aerial vehicle (UAV) trajectory Deep reinforcement learning User mobility |
| url | http://www.sciencedirect.com/science/article/pii/S2405959523000280 |
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