Energy Efficiency and Spectrum Efficiency in Underlay Device-to-Device Communications Enabled Cellular Networks

被引：0
|
作者：
Yan Cai [1 ,2 ]
Yiyang Ni [1 ,2 ,3 ]
Jun Zhang [1 ,2 ]
Su Zhao [1 ,4 ]
Hongbo Zhu [1 ,2 ]
机构：
[1] Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications
[2] Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Nanjing University of Posts and Telecommunications, Ministry of Education
[3] Jiangsu Second Normal University
[4] National Mobile Communications Research Laboratory, Southeast University
来源：
China Communications | 2019年 / 16卷 / 04期
基金：
中国国家自然科学基金;
关键词：
D2D communications; energy efficiency; spectrum efficiency; two-way amplify-and-forward relaying protocol;
D O I：
暂无
中图分类号：
TN929.5 [移动通信];
学科分类号：
080402 ; 080904 ; 0810 ; 081001 ;
摘要：
In this paper, we investigate the energy efficiency and spectrum efficiency, including one-hop device-to-device(D2D) communications mode and two-way amplify-and-forward(AF) relaying D2D communications mode in underlay D2D communications enabled cellular networks. An analysis of average energy efficiency and spectrum efficiency are developed and closed-form expressions are obtained for two types of D2D communications modes under the effect of Rayleigh fading channel, path loss, and co-channel interference. Analytical results are validated through numerical simulations. Based on the simulation, the effects of the interference, the distance between D2D pair and the position of relay node on the energy efficiency and spectrum efficiency of D2D communications are investigated. The optimal D2D transmission powers of these two modes to maximize the energy efficiency are also investigated.
引用
收藏
页码：16 / 34
页数：19
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