Interference mitigation in femtocell CDMA networks through time reuse partitioning

A two-tier network composed of conventional macrocellular networks and emerging multi-femtocell networks offers extended indoor coverage and higher data rates while off oading the traffic through high speed backhaul network. This network can also reduce the power useage signif cantly via available short range radio communication. As the femtocell shares the same frequency band with underlying macrocell, the cross tier interference needs to be mitigated. The inter-femtocell and cross tier interference near femtocell boundary may unacceptably degrade the system performance. In this paper, we propose to use time reuse portioning to mitigate downlink inter-femtocell interference as well as cross tier interference and the present results to show performance improvement by employing the time reuse partitioning in CDMA networks.