RF-EMF exposure induced by distributed antenna system in the subway station

Abstract

We aim in the present paper to address the impact of installing indoor distributed antenna system (distAS) on the human exposure to radio-frequency electromagnetic field (RF-EMF). We note that distAS aims to extend coverage and improve wireless communication quality. We performed measurement campaigns in subway stations, where distAS are deployed. The impact of distAS on the exposure is studied by considering two scenarios where distAS are turned either on or off. The electric field strength is measured at different distances to the distAS, for all the frequency bands and operators. The results show that the DL exposure induced by distAS is very low and far away from the standard limits of ICNIRP.