An Inter-Cell Interference Suppression Scheme based on Cooperative Transmission
Liu Hai-tao · 2012
An inter-cell interference(ICI) suppression scheme based on cooperation transmission for LTE(Long Term Evolution) uplink SC-FDMA(Single Carrier Frequency Division Multiple Access) systems is proposed.By letting a user be a relay of the other one,the two users at the edge of neighboring cells cooperate in decode-and-forward mode.Under this structure,the two users could fulfill cooperative transmission from UE to base-station in three time slots.The simulation results show that the proposed scheme could suppress the ICI effectively,and exploit spatial diversity gain to improve the link reliability of cell-edge users.Moreover,with B-STBC(Block-Space-Time Block Code) the transmission signal could keep the characteristic of low PAPR(Peak to Average Power Ratio).