An adaptive frequency allocation scheme for OFDMA femtocell networks

Due to high data rate requirement for indoor communication, femtocells have been proposed as a potential solution to increase not only indoor radio coverage but also system capacity. However, there is co-channel interference that affects the system throughput seriously due to high density of femtocells in urban environment. In this paper, an adaptive frequency allocation (AFA) for LTE network is proposed to mitigate interference. Performance evaluation is given to justify our proposed method on improving overall system throughput compared with co-channel frequency allocation (co-channel FA) and orthogonal frequency allocation (OFA).