Open AccessEnergy efficient power allocation for D2D communications in fading channels
Author(s) -
Zuo Jiakuo,
Yang Longxiang
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.3875
Subject(s) - fading , computer science , transmitter power output , power (physics) , outage probability , constraint (computer aided design) , mathematical optimization , lagrange multiplier , efficient energy use , energy (signal processing) , electronic engineering , computer network , mathematics , channel (broadcasting) , engineering , electrical engineering , statistics , transmitter , physics , geometry , quantum mechanics
In this Letter, the authors consider device‐to‐device (D2D) communications over block fading channels. Both D2D user and cellular user (CU) have an outage probability constrain. The power is optimised for maximisation of the averaged energy efficiency (EE) of D2D communications under outage probability constraints and average transmit power constraint. Based on Dinkelbach algorithm and Lagrange dual method, an efficient power allocation algorithm is proposed to solve the above problem. Simulation results demonstrate the improvements in terms of EE by using the proposed power allocation scheme.