Energy Efficient Joint User Association and Power Allocation in a Two-Tier Heterogeneous Network

被引：0
|
作者：
Ye, Guanshan [1 ]
Zhang, Haijun [2 ,3 ,4 ]
Liu, Hao [1 ]
Cheng, Julian [1 ]
Leung, Victor C. M. [2 ]
机构：
[1] Univ British Columbia, Sch Engn, Kelowna, BC, Canada
[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC, Canada
[3] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing, Jiangsu, Peoples R China
[4] Univ Sci & Technol Beijing, Technol Res Ctr Convergence Networks & Ubiquitous, Beijing 100083, Peoples R China
来源：
2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) | 2016年
基金：
中国国家自然科学基金;
关键词：
SMALL-CELL NETWORKS; RESOURCE-ALLOCATION; SPECTRUM; OFDMA; TRANSMISSION;
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：
Energy-efficient design has emerged as a promising technique in heterogeneous networks. We study the energy efficiency problem of joint user association and power allocation in a two-tier heterogeneous network with small cells. The energy efficiency is maximized under certain prescribed quality-ofservice requirement and maximum power limit constraint. The original optimization problem is a nonconvex integer programming and is NP-hard. A continuous and convex relaxation method is employed to solve this problem. Then, an iterative joint user association and power allocation algorithm is proposed to maximize the energy efficiency. Simulation results show that the proposed algorithm has improved energy efficiency when compared with a reference scheme using fixed power allocation.
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页数：5
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