Title :
Energy-efficient power allocation for two-hop relay networks
Author :
Yong Li ; Zhengguang Zheng
Author_Institution :
Dept. of Embedded Software & Syst., Beijing Univ. of Technol., Beijing, China
Abstract :
A joint relay selection and power allocation scheme to maximise energy efficiency with restriction on the minimum spectral efficiency requirement for an amplify-and-forward two-hop relay network is presented. A closed-form solution of the low-complexity power allocation for such a system has been derived, which is easy to implement and has the potential to find wide application in green communications. Some numerical examples are provided to validate the analysis.
Keywords :
amplify and forward communication; relay networks (telecommunication); resource allocation; amplify-and-forward two-hop relay network; energy efficient power allocation; green communications; spectral efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.2539
