Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks
Non-orthogonal multiple access (NOMA) technique, which is known to raise the performance of frequency spectrum constrained wireless communication networks, has obtained wide attention. In this paper, a NOMA-based resource allocation problem in the decode-and-forward relaying downlink network is cons...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8653277/ |
| _version_ | 1818412366912552960 |
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| author | Guangjun Liang Qi Zhu Jianfang Xin Youhong Feng Tianjiao Zhang |
| author_facet | Guangjun Liang Qi Zhu Jianfang Xin Youhong Feng Tianjiao Zhang |
| author_sort | Guangjun Liang |
| collection | DOAJ |
| description | Non-orthogonal multiple access (NOMA) technique, which is known to raise the performance of frequency spectrum constrained wireless communication networks, has obtained wide attention. In this paper, a NOMA-based resource allocation problem in the decode-and-forward relaying downlink network is considered. We aim to maximize the average user transmission rate, subject to the total system power constraint and users' quality of service requirement. A joint user-channel assignment and power allocation problem is formulated, which leads to an NP-hard problem requiring an exhaustive search. To tackle this problem, we adopt a decouple optimization method to separate the joint resource problem into two subproblems, a user-channel assignment problem, and a power allocation problem. After solving the two subproblems, a joint alternating optimization algorithm is proposed with low complexity. The simulation results show that the proposed joint optimal scheme can efficiently improve system performance in the limited channels of multiple users relaying networks. |
| first_indexed | 2024-12-14T10:46:10Z |
| format | Article |
| id | doaj.art-7ef2f3c29104497bba59f1a556128b7b |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-14T10:46:10Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-7ef2f3c29104497bba59f1a556128b7b2022-12-21T23:05:26ZengIEEEIEEE Access2169-35362019-01-017303613037210.1109/ACCESS.2019.29018668653277Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying NetworksGuangjun Liang0https://orcid.org/0000-0001-7069-3242Qi Zhu1Jianfang Xin2https://orcid.org/0000-0001-9893-0852Youhong Feng3Tianjiao Zhang4Jiangsu Key Laboratory of Wireless Communications, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, ChinaJiangsu Key Laboratory of Wireless Communications, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, ChinaJiangsu Key Laboratory of Wireless Communications, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, ChinaJiangsu Key Laboratory of Wireless Communications, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, ChinaJiangsu Key Laboratory of Wireless Communications, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, ChinaNon-orthogonal multiple access (NOMA) technique, which is known to raise the performance of frequency spectrum constrained wireless communication networks, has obtained wide attention. In this paper, a NOMA-based resource allocation problem in the decode-and-forward relaying downlink network is considered. We aim to maximize the average user transmission rate, subject to the total system power constraint and users' quality of service requirement. A joint user-channel assignment and power allocation problem is formulated, which leads to an NP-hard problem requiring an exhaustive search. To tackle this problem, we adopt a decouple optimization method to separate the joint resource problem into two subproblems, a user-channel assignment problem, and a power allocation problem. After solving the two subproblems, a joint alternating optimization algorithm is proposed with low complexity. The simulation results show that the proposed joint optimal scheme can efficiently improve system performance in the limited channels of multiple users relaying networks.https://ieeexplore.ieee.org/document/8653277/NOMAuser-channel assignmentpower allocationrelay |
| spellingShingle | Guangjun Liang Qi Zhu Jianfang Xin Youhong Feng Tianjiao Zhang Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks IEEE Access NOMA user-channel assignment power allocation relay |
| title | Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks |
| title_full | Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks |
| title_fullStr | Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks |
| title_full_unstemmed | Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks |
| title_short | Joint User-Channel Assignment and Power Allocation for Non-Orthogonal Multiple Access Relaying Networks |
| title_sort | joint user channel assignment and power allocation for non orthogonal multiple access relaying networks |
| topic | NOMA user-channel assignment power allocation relay |
| url | https://ieeexplore.ieee.org/document/8653277/ |
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