Open AccessEnergy‐efficient power allocation for two‐hop relay networks
Author(s) -
Li Yong,
Zheng Zhengguang
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.2539
Subject(s) - relay , hop (telecommunications) , computer science , power (physics) , efficient energy use , energy (signal processing) , computer network , telecommunications , electrical engineering , engineering , mathematics , physics , quantum mechanics , statistics
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.