An Optimal Power Allocation Scheme in Downlink Multi-user NOMA Beamforming System with Imperfect CSI

被引：0
|
作者：
Liu, Xiaoguang [1 ,2 ]
Zhang, Jun [1 ,2 ]
Cai, Shu [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Jiangsu Key Lab Wireless Commun, Nanjing 210003, Jiangsu, Peoples R China
[2] Sci & Technol Commun Networks Lab, Shijiazhuang 050081, Hebei, Peoples R China
来源：
PROCEEDINGS OF 2018 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS (ICCS 2018) | 2018年
基金：
中国博士后科学基金;
关键词：
regularized zero forcing precoding; channel state information; non-orthogonal multiple access; sum rate; NONORTHOGONAL MULTIPLE-ACCESS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we consider downlink multi-user nonorthogonal 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.
引用
收藏
页码：99 / 103
页数：5
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