An Optimal Power Allocation Scheme in Downlink Multi-user NOMA Beamforming System with Imperfect CSI
In this paper, we consider downlink multi-user non-orthogonal multiple access beamforming system with imperfect channel state information. In this system, we employ regularized zero-forcing precoding to reduce inter-cluster interference since it has a good performance-complexity balance. By maximizi...
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| Vydáno v: | 2018 IEEE International Conference on Communication Systems (ICCS) s. 99 - 103 |
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01.12.2018
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| Abstract | In this paper, we consider downlink multi-user non-orthogonal multiple access beamforming system with imperfect channel state information. In this system, we employ regularized zero-forcing precoding to reduce inter-cluster interference since it has a good performance-complexity balance. By maximizing the total capacity of the system, under the premise of ensuring users' fairness, we propose an optimal power allocation scheme. Finally, we confirm the effectiveness of the proposed scheme by simulation results. It shows that the proposed scheme can increase the cell-edge users' capacity and maintain the fairness of users. |
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| AbstractList | In this paper, we consider downlink multi-user non-orthogonal multiple access beamforming system with imperfect channel state information. In this system, we employ regularized zero-forcing precoding to reduce inter-cluster interference since it has a good performance-complexity balance. By maximizing the total capacity of the system, under the premise of ensuring users' fairness, we propose an optimal power allocation scheme. Finally, we confirm the effectiveness of the proposed scheme by simulation results. It shows that the proposed scheme can increase the cell-edge users' capacity and maintain the fairness of users. |
| Author | Liu, Xiaoguang Cai, Shu Zhang, Jun |
| Author_xml | – sequence: 1 givenname: Xiaoguang surname: Liu fullname: Liu, Xiaoguang email: 1216012233@njupt.edu.cn organization: Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing, 210003, P.R.China – sequence: 2 givenname: Jun surname: Zhang fullname: Zhang, Jun email: zhangjun@njupt.edu.cn organization: Jiangsu Key Lab. of Wireless Commun., Nanjing Univ. of Posts & Telecommun., Nanjing, China – sequence: 3 givenname: Shu surname: Cai fullname: Cai, Shu email: caishu@njupt.edu.cn organization: Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing, 210003, P.R.China |
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| Snippet | In this paper, we consider downlink multi-user non-orthogonal multiple access beamforming system with imperfect channel state information. In this system, we... |
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| SubjectTerms | Array signal processing Channel estimation channel state information Downlink Interference NOMA non-orthogonal multiple access Precoding regularized zero forcing precoding Resource management sum rate |
| Title | An Optimal Power Allocation Scheme in Downlink Multi-user NOMA Beamforming System with Imperfect CSI |
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