Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks
This paper considers a non-orthogonal multiple access (NOMA) downlink network, where a hybrid of NOMA and beamforming designs is developed to enhance the channel capacity. We aim to improve the system performance in terms of rate fairness and power consumption. Hence, a multi-objective problem with...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/1/58 |
| _version_ | 1797543632512745472 |
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| author | Kha-Hung Nguyen Hieu V. Nguyen Mai T. P. Le Tuan X. Cao Oh-Soon Shin |
| author_facet | Kha-Hung Nguyen Hieu V. Nguyen Mai T. P. Le Tuan X. Cao Oh-Soon Shin |
| author_sort | Kha-Hung Nguyen |
| collection | DOAJ |
| description | This paper considers a non-orthogonal multiple access (NOMA) downlink network, where a hybrid of NOMA and beamforming designs is developed to enhance the channel capacity. We aim to improve the system performance in terms of rate fairness and power consumption. Hence, a multi-objective problem with a joint optimization of user equipment pairing, power control, and quality-of-service requirements is addressed. To efficiently solve the problem, we propose two low-complexity algorithms based on the inner-approximation method, with the first algorithm using the relaxation method and the second one using graph theory. Numerical results are provided to demonstrate the effectiveness of the two proposed algorithms in comparison with the exhaustive search and existing methods. |
| first_indexed | 2024-03-10T13:48:23Z |
| format | Article |
| id | doaj.art-61bac51a9a1e42f19e2c79dce6ec92b3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T13:48:23Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-61bac51a9a1e42f19e2c79dce6ec92b32023-11-21T02:26:01ZengMDPI AGEnergies1996-10732020-12-011415810.3390/en14010058Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink NetworksKha-Hung Nguyen0Hieu V. Nguyen1Mai T. P. Le2Tuan X. Cao3Oh-Soon Shin4School of Electronic Engineering and Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, KoreaSchool of Electronic Engineering and Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, KoreaFaculty of Electronics and Telecommunication Engineering, The University of Danang-University of Science and Technology, Danang 550000, VietnamDepartment of Office Administration, The University of Danang, Danang 550000, VietnamSchool of Electronic Engineering and Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, KoreaThis paper considers a non-orthogonal multiple access (NOMA) downlink network, where a hybrid of NOMA and beamforming designs is developed to enhance the channel capacity. We aim to improve the system performance in terms of rate fairness and power consumption. Hence, a multi-objective problem with a joint optimization of user equipment pairing, power control, and quality-of-service requirements is addressed. To efficiently solve the problem, we propose two low-complexity algorithms based on the inner-approximation method, with the first algorithm using the relaxation method and the second one using graph theory. Numerical results are provided to demonstrate the effectiveness of the two proposed algorithms in comparison with the exhaustive search and existing methods.https://www.mdpi.com/1996-1073/14/1/58bipartite graphinner approximationnon-orthogonal multiple accesspower consumptionrate fairness |
| spellingShingle | Kha-Hung Nguyen Hieu V. Nguyen Mai T. P. Le Tuan X. Cao Oh-Soon Shin Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks Energies bipartite graph inner approximation non-orthogonal multiple access power consumption rate fairness |
| title | Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks |
| title_full | Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks |
| title_fullStr | Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks |
| title_full_unstemmed | Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks |
| title_short | Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks |
| title_sort | rate fairness and power consumption optimization for noma assisted downlink networks |
| topic | bipartite graph inner approximation non-orthogonal multiple access power consumption rate fairness |
| url | https://www.mdpi.com/1996-1073/14/1/58 |
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