Zero-forcing based multiuser beamforming for coordinated Multi-Point transmission

Coordinated Multi-Point transmission and reception (CoMP) technique is a new promising scheme which has been adopted in LTE-Advanced. CoMP is mostly required to reduce the inter-cell interference (ICI). It also increases the cell edge user throughput and improves the coverage. For downlink CoMP, most research work mainly focuses on joint processing/transmission (CoMP-JP) mode. The Joint Processing technique for CoMP can maximize system performance, which is achieved mainly with zero-forcing beamforming algorithms. In this paper, we study the performance of multiuser beamforming for differently in various CoMP scenarios. The simulation results indicate that the proposed scheme offers much higher performance gain compared with the CoMP-JP mode.