Energy efficient transmission optimization for distributed-antenna smart grid networks

In this paper, a distributed-antenna electric power communication network is considered with multiple distributed antennas as access, points serving multiple terminals. We investigate the energy efficiency (EE) of the network. In order to promote the network EE with guaranteed quality of service of terminals. We first derive the approximate EE expression of the distributed network. Accordingly, we then propose an access point selection algorithm based on the distance between terminals to stations in order to maximize the network EE while not affecting the overall networks spectral efficiency too much. Numerical results show that the network EE of the proposed algorithm outperforms the conventional method with all antennas selected. It is observed that trivially increasing the number of antennas access points always guarantee a high EE. Simulation results verify the effectiveness of the proposed method.