康桂霞,
1.河北师范大学职业技术学院 石家庄 050024
2.北京邮电大学信息与通信工程学院 北京 100876
3.无锡北邮感知技术产业研究院 无锡 214000
基金项目:国家重大专项(2017ZX03001022)
详细信息
作者简介:张双：女，1989年生，博士生，研究方向为异构网络、非正交多址接入技术、绿色蜂窝网络
康桂霞：女，1972年生，博士生导师，研究方向为移动物联通信、大数据人工智能技术
通讯作者:康桂霞 gxkang@bupt.edu.cn
中图分类号:TN929.5计量
文章访问数:641
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被引次数:0
出版历程
收稿日期:2019-07-02
修回日期:2020-04-13
网络出版日期:2020-08-31
刊出日期:2020-11-16
Energy Efficient Power Allocation with NOMA in Downlink Heterogeneous Networks
Shuang ZHANG,Guixia KANG,
1. College of Career Technology, Hebei Normal University, Shijiazhuang 050024, China
2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
3. Wuxi BUPT Sensory Technology and Industry Institute, Wuxi 214000, China
Funds:The National Science and Technology Major Project of China (2017ZX03001022)
摘要
摘要:该文针对应用非正交多址接入(NOMA)技术的异构蜂窝网络，在考虑层间层内干扰的情况下，提出一种能效最大化的功率分配算法。该算法主要包括两部分，一部分为子信道内用户功率分配因子的求解，主要利用差分优化的方法，迭代求解。另一部分为子信道间的功率分配，主要利用凹凸程序法将原有的非凸问题简化为可解的凸问题，最后利用拉格朗日求解法得出功率最优解。仿真结果表明该算法有良好的迭代性，且新算法表明利用NOMA技术得到的系统能效较利用正交技术得到的系统能效提高了至少44%以上。
关键词:非正交多址接入/
异构蜂窝网络/
能效/
功率分配
Abstract:This paper proposes a power allocation scheme for energy efficiency maximization in a downlink Non-Orthogonal Multiple Access (NOMA)-based Heterogeneous Network (HetNets) with considering the out-of-cell interference and in-cell interference. The scheme contains mainly two parts. One is the power allocation between the users at the same sub-channel, where Difference of Convex (DC) functions -programming is exploited to solve the problem. Another is the power allocation between the sub-channels, in which ConCave–Convex Procedure (CCCP) method and Lagrangian multiplier method are combined to solve the problem. The simulation results show that the fast convergence property, and demonstrate that the EE obtained by the proposed algorithms based on NOMA is at least 44% higher than that obtained by the conventional orthogonal multiple access scheme.
Key words:Non-Orthogonal Multiple Access (NOMA)/
Heterogeneous Networks (HetNets)/
Energy efficiency/
Power allocation
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