Energy efficient power allocation for D2D communications in fading channels
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.
