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

Abstract

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 zeroforcing 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.

Exploring Coordinated Multipoint Beamforming Strategies for 5G Cellular

“…This strategy is known as MET [12], [30], [31] and maximizes the SNR of the received signal, entirely ignoring the amount of interference caused to other users. We apply an SVD to the channel matrices to obtain H 11 = U 11 7) and ( 9) and ignoring the interference terms as such, i.e., treating them instead as ordinary white noise, we find a corresponding SNR maximizing equalizer solution in g 1 , g 2 for the given precoding vectors 2 :…”