Energy-efficient deployment of distributed antenna systems with radio-over-fiber links

Distributed antenna systems (DAS) are known to improve coverage and performance of wireless communications in indoor environments. In this paper, we propose a mechanism to find the position of distributed antennas in order to optimize the network capacity for a given deployment scenario, considering non-uniform users presence probability. We also consider power consumption measurements of 802.11 access points and smartphones in order to quantify the energy efficiency of a DAS using radio-over-fiber (RoF) technologies. Our results show that there exists an optimal number of distributed antennas for a given topology of the indoor environment.