Enhanced Performance of Heterogeneous Networks Through Full-Duplex Relaying

In this paper, the authors focus on the uplink of a heterogeneous network composed of a macrocell and an underlaid femtocell. They address the problem of the interference caused by the Macro User (MU) on the femtocell [Femto Base Station (FBS) and users]. The femtocell is composed of an user, a femto relay, which can be seen as another FBS or a dedicated relay, and an FBS. They assume a Full-Duplex Relay (FDR) node which is able to transmit and receive simultaneously while suffering from residual self-interference. They focus on the performance of the femtocell according to different positions of the MU user.