Resource Allocation with Interference Mitigation in OFDMA Femtocells for Co-Channel Deploymenta
Femtocells have been considered as a promising technology to provide better indoor coverage and spatial reuse gains. However, the co-channel deployment of macro-cells and femtocells is still facing challenges arising from potentially severe inter-cell interference. In this paper, the authors investigate the uplink resource allocation problem of femtocells in co-channel deployment with macro-cells. They first model the uplink power and sub-channel allocation in femtocells as a non-cooperative game, where inter-cell interference is taken into account in maximizing the femtocell capacity and uplink femto-to-macro interference is alleviated by charging each femto user a price proportional to the interference that it causes to the macro-cell.