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
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.
引用
收藏
页码:171 / 178
页数:7
相关论文
共 24 条
  • [21] Boyer J., Falconer D., Yanikomeroglu H., Multihop diversity in wireless relaying channels, IEEE Trans. Commun., 52, 9, pp. 1820-1830, (2004)
  • [22] Wildemeersch M., Quek T.Q.S., Kountouris M., Successive interference cancellation in heterogeneous networks, IEEE Trans. Commun., 62, 12, pp. 4440-4453, (2014)
  • [23] Boyd S., Vandenberghe L., Convex Optimization, (2004)
  • [24] Aniruddha C., Sankalita B., Biswajit G., Energy efficient relay placement in dual hop 802.15.4 networks, Wireless Personal Communications, 75, 4, pp. 1947-1967, (2014)