Multi-cell and multi-user detection in uplink for MIMO systems

In MIMO system, the inter-antenna interference and intra-cell interference are usually mitigated by local processing of own base station, however, inter-cell interference (ICI) is hard to be reduced effectively by the works of single cell. This paper proposes a multi-cell and multi-user detection algorithm to combat the ICI in uplink. The proposed algorithm can be implemented with the helps of multiuser detector and backhaul, as the former one is used to detect different signals from different cells and the latter one is used for sharing data information between neighboring cells. Simulation results show that the performances of proposed algorithm have great improvements in comparison to single-cell single-user detection, and have desirable gains comparing with single-cell multi-user detection.