Power efficient resource allocation algorithm based on sequential quadratic programming in dense femtocell deployment

In dense deployment, Femtocells can be deployed in very close proximity in apartments. In OFDMA (Orthogonal Frequency Division Multiplexing Access) systems, this dense deployment may lead to severe co-tier interference between Femtocells when they are operating in the same sub-channels. In this paper, a power efficient resource allocation algorithm based on sequential quadratic programming (SQP) is proposed to mitigate co-tier interference in dense Femtocell deployment. This scheme aims at maximizing the throughput of Femtocells while limiting the co-tier interference among Femtocells, and guaranteeing the minimum Signal to Interference plus Noise Ratio (SINR) requirement of Femto User Equipments (Femto UEs). A two-tier OFDMA Femtocell simulator is established to demonstrate the system performance.