Energy efficiency optimization and comparison for one-way and two-way decode-and-forward relay systems

被引：0
作者：
Yang J. [1 ]
Cao X. [1 ]
Chen R. [1 ]
Zhu D. [1 ]
机构：
[1] Department of Communication Engineering, Nanjing Institute of Technology, Nanjing
来源：
Yang, Jie (yangjie@njit.edu.cn) | 1600年 / Engineering and Technology Publishing卷 / 11期
关键词：
Decode-and-forward; Energy efficiency; One-way relay transmission; Two-way relay transmission;
D O I：
10.12720/jcm.11.2.171-178
中图分类号：
学科分类号：
摘要：
Energy-efficient communication techniques play great roles in applications where devices are powered by batteries. Relaying is viewed as an energy saving technique because it can reduce the transmit power by breaking one long range transmission into several short range transmissions. Two-Way Relaying Transmission (TWRT) is expected to consume less transmit power than One-Way Relaying Transmission (OWRT). In this paper, we study the Energy Efficiencies (EEs) of One-Way Decode-and-Forward (OWDF) and Two-Way Decode-and-Forward (TWDF) systems with delay constraint. The maximum EEs of both systems are derived by jointly optimizing the transmission duration and the transmit power allocation. Analytical and simulation results show the impacts of packet size, time deadline and the channel gain to EE. © 2016 Journal of Communications.
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页码：171 / 178
页数：7
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