Co-Channel Interference in Future Femtocell Networks

In this short paper, we present an analysis for co- channel interference between femtocell (FC) downlink transmissions in a purely homogeneous femtocell type network. We assume no direct coordination between FCs since, as of Release 12, no low-latency links are provided for intra-cell communication. Our simulations utilize VoIP traffic models to understand the interference impact of QoS oriented traffic as network densities increase. The preliminary results demonstrate the reduced performance of FCs under this co-channel model when resource allocations depend on existing sensing and traditional usage of sensing information.