Open AccessPerformance analysis and optimisation of wireless powered decode‐and‐forward considering circuit power consumption
Author(s) -
Hu Yifan,
Cao Ning,
Chen Yunfei,
Mao Minghe,
Li Rui
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5228
Subject(s) - computer science , power consumption , wireless , power (physics) , idle , energy consumption , diversity gain , circuit switching , energy harvesting , topology (electrical circuits) , electronic engineering , telecommunications , electrical engineering , channel (broadcasting) , mimo , engineering , physics , quantum mechanics , operating system
Idle nodes are used in cooperative communications to achieve diversity gain or coverage extension. Energy harvesting (EH) allows cooperative communications to be less dependent on batteries. In this study, the performance of EH decode‐and‐forward relaying is analysed in terms of achievable rate for non‐ideal relaying nodes whose circuit power cannot be neglected. Two time switching protocols, continuous time switching and discrete time switching, are studied. The analytical expressions for the achievable rate are derived and optimised. Numerical results show the validity of the analytical expressions and determine the influence of the circuit power consumption.