Performance of uplink joint reception CoMP with antenna selection for reducing complexity in LTE-A systems

Coordinated Multi-point (CoMP) transmission and reception is considered as a promising technique to combat inter-cell interference, enhance throughput, improve mobility, reduce handover interruption time, and also to increase spectrum efficiency. In this paper, we investigate and analyze the performance of uplink intra-site joint reception CoMP (JR-CoMP) for LTE-Advanced (LTE-A) systems. Both single user-MIMO (SU-MIMO) CoMP and multiple user-MIMO (MU-MIMO) CoMP show significant gains in terms of cell average and cell-edge throughput performances. However, the complexity of JR-CoMP is a big concern for realistic systems. In this paper, we propose a novel and low-complexity JR-CoMP scheme which combines effective antenna selection (and is denoted as JR-CoMP-AS). Compared with original JR-CoMP, the proposed JR-CoMP-AS can significantly reduce the computational complexity with acceptable performance loss. Simulation results demonstrate and validate the advantage of the proposed JR-CoMP-AS scheme.