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

Yan Cai; Yiyang Ni; Jun Zhang; Su Zhao; Hongbo Zhu

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

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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.

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来源
《中国通信：英文版》 |2019年第4期|16-34|共19页
作者
Yan Cai; Yiyang Ni; Jun Zhang; Su Zhao; Hongbo Zhu;
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作者单位

Jiangsu Key Laboratory of Wireless Communications;

Nanjing University of Posts and Telecommunications;

Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks;

Nanjing University of Posts and Telecommunications;

Ministry of Education;

Jiangsu Second Normal University;

National Mobile Communications Research Laboratory;

Southeast University;

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原文格式 PDF
正文语种 chi
中图分类无线电电子学、电信技术;
关键词
D2D; communications; energyefficiency; spectrum; efficiency; two-way; amplify-and-forward; relaying; protocol;

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

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