Optimized frequency allocation for interference mitigation in femtocellular networks

The recent introduction of femtocells enabled high data rates and better coverage indoors without the need for upgrading the network infrastructure or site establishment. However, Femtocells may suffer from major interference problems due to their dense and ad hoc deployment. In this paper, we propose a frequency assignment optimal scheme for downlink femtocell networks. The algorithm is based on optimization search rather than greedy or heuristic methods. Simulation results show that the proposed scheme outperformed two representative algorithms used for comparison.