An Enhanced Spectrum Resource Allocation Algorithm for Femtocells

Efficient spectrum resource allocation in wireless networks is important for improving the system throughput and guaranteeing the user-percieved Quality-of-Service (QoS). In this paper, we propose an enhanced algorithm for spectrum resource allocation in femtocells. First, the bandwidth of each user is determined by the user´s demand and the channel state. Second, graph theory is enhanced and used to improve spectrum efficiency. Our simulation results show that the proposed algorithm improves the system throughput significantly and also guarantees the fairness toward the users.