Optimal Sum-Rate Maximization in a NOMA System with Channel Estimation Error

被引：0
|
作者：
Zamani, Mohammad Reza [1 ]
Eslami, Mohsen [1 ]
Khorramizadeh, Mostafa [2 ]
机构：
[1] Shiraz Univ Technol Shiraz, Dept Elect & Elect Engn, Shiraz, Iran
[2] Shiraz Univ Technol, Dept Math, Shiraz, Iran
来源：
26TH IRANIAN CONFERENCE ON ELECTRICAL ENGINEERING (ICEE 2018) | 2018年
关键词：
Non-Orthogonal Multiple Access (NOMA); Channel Estimation Error; Sum -Rate Maximization. KKT Conditions; NONORTHOGONAL MULTIPLE-ACCESS; POWER ALLOCATION; CHALLENGES;
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：
Non-Orthogonal Multiple Access (NOMA) has recently been conceived as a new technology for 5G cellular communication which has the potential to provide higher throughput than conventional orthogonal multiple access. In this paper, we deal with sum -rate maximization of a downlink NOMA based system in the presence of channel estimation error which is a more practical scenario, with user's QoS and total BS power constraints. By analyzing KKT conditions, a closed form solution for optimal power allocation aiming to maximize sum -rate is derived. Simulation results depict that in terms of sum -rate, NOMA system outperforms conventional orthogonal multiple access (OMA) systems and the gain of NOMA increases with users.
引用
收藏
页码：720 / 724
页数：5
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