System level simulation of LTE MBSFN networks with high mobility users

Abstract

In this paper, the performance of Multicast-Broadcast Single-Frequency Networks (MBSFN) that are exposed to inter-carrier interference is investigated. LTE-MBSFN is considered as one important approach to support vehicular safety services through point-to-multipoint transmissions. However in networks with high mobility users, user movement and multi-path propagation cause Doppler spreading and excess delay of the received signal. Our focus lies on the implementation and verification of abstraction models for inter-carrier interference (ICI) in this context. We model ICI as additional Gaussian noise that is added at the receiver. The increment in noise power is determined by the user velocity, affecting the Doppler spread of the signal. The proposed abstraction can be applied to investigate the efficiency of the MBSFN networks with respect to user speed and operational frequency of the transmitted signals.