Spectral-efficiency optimization for NOMA-based amplify-and-forward cooperative relaying systems with beamforming and power allocation
In this paper, we propose a novel spectrum-efficiency (SE) optimization scheme for amplify-and-forward (AF) cooperative relaying systems based on non-orthogonal multiple-access (NOMA). In this network, a weighted-sum-minimum mean-squared-error (WSMMSE) method is utilized to transform the original no...
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| Published in | Wireless networks Vol. 27; no. 6; pp. 4123 - 4132 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
New York
Springer US
01.08.2021
Springer Nature B.V |
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| Online Access | Get full text |
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| Abstract | In this paper, we propose a novel spectrum-efficiency (SE) optimization scheme for amplify-and-forward (AF) cooperative relaying systems based on non-orthogonal multiple-access (NOMA). In this network, a weighted-sum-minimum mean-squared-error (WSMMSE) method is utilized to transform the original non-convex optimization problem into a tractable optimization problem. Then, the relay beamforming-matrix (BM) and the power-allocation (PA) coefficients are alternately optimized by use of the iterative beamforming method and the Lagrange-multiplier (LM) method subject to the quality-of-service requirements. Monte Carlo simulation results verify that our proposed new scheme can attain better performance than the optimal PA-NOMA technique and the conventional orthogonal multiple-access (OMA) technique. |
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| AbstractList | In this paper, we propose a novel spectrum-efficiency (SE) optimization scheme for amplify-and-forward (AF) cooperative relaying systems based on non-orthogonal multiple-access (NOMA). In this network, a weighted-sum-minimum mean-squared-error (WSMMSE) method is utilized to transform the original non-convex optimization problem into a tractable optimization problem. Then, the relay beamforming-matrix (BM) and the power-allocation (PA) coefficients are alternately optimized by use of the iterative beamforming method and the Lagrange-multiplier (LM) method subject to the quality-of-service requirements. Monte Carlo simulation results verify that our proposed new scheme can attain better performance than the optimal PA-NOMA technique and the conventional orthogonal multiple-access (OMA) technique. |
| Author | Wu, Hsiao-Chun Wang, Qian Yan, Xiao Yang, Kai Qin, Kaiyu |
| Author_xml | – sequence: 1 givenname: Kai surname: Yang fullname: Yang, Kai organization: School of Aeronautics and Astronautics, University of Electronic Science and Technology of China – sequence: 2 givenname: Xiao orcidid: 0000-0003-4108-9665 surname: Yan fullname: Yan, Xiao email: yanxiao@uestc.edu.cn organization: School of Aeronautics and Astronautics, University of Electronic Science and Technology of China – sequence: 3 givenname: Qian surname: Wang fullname: Wang, Qian organization: School of Aeronautics and Astronautics, University of Electronic Science and Technology of China – sequence: 4 givenname: Hsiao-Chun surname: Wu fullname: Wu, Hsiao-Chun organization: School of Electrical Engineering and Computer Science, Louisiana State University – sequence: 5 givenname: Kaiyu surname: Qin fullname: Qin, Kaiyu organization: School of Aeronautics and Astronautics, University of Electronic Science and Technology of China |
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| Cites_doi | 10.1017/CBO9780511804441 10.1109/LCOMM.2020.3020962 10.1109/TWC.2018.2842725 10.1007/s11276-018-1807-z 10.1007/s11036-019-01407-3 10.1109/LWC.2019.2900013 10.1109/TCOMM.2019.2945781 10.1109/OJCOMS.2021.3075081 10.1109/TWC.2020.3036444 10.1109/TVT.2018.2881314 10.1109/TVT.2017.2657741 10.1109/LCOMM.2018.2878729 10.1109/TCOMM.2020.2990994 10.1109/TVT.2020.3004889 10.1109/TCOMM.2018.2858811 10.1109/LCOMM.2016.2611500 10.1109/LCOMM.2018.2790379 10.1109/MCOM.2017.1500657CM 10.1109/LWC.2017.2708117 10.1109/TVT.2020.2972617 10.1080/10556789908805766 10.1109/JSAC.2017.2725519 10.1109/COMST.2016.2621116 10.1109/TSP.2012.2189388 10.1109/TVT.2019.2949129 10.1109/IWCMC48107.2020.9148086 10.1109/SPAWC.2018.8445898 10.1109/GLOCOM.2017.8254178 10.1109/ICC.2019.8761923 |
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| Keywords | Spectrum-efficiency (SE) Weighted-sum-minimum mean-squared-error (WSMMSE) Power allocation (PA) Relay beamforming-matrix (BM) Non-orthogonal multiple-access (NOMA) |
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| Snippet | In this paper, we propose a novel spectrum-efficiency (SE) optimization scheme for amplify-and-forward (AF) cooperative relaying systems based on... |
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| SubjectTerms | Beamforming Communications Engineering Computer Communication Networks Convexity Electrical Engineering Engineering IT in Business Monte Carlo simulation Networks Nonorthogonal multiple access Optimization Original Paper Relaying Wireless networks |
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| Title | Spectral-efficiency optimization for NOMA-based amplify-and-forward cooperative relaying systems with beamforming and power allocation |
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