A Multiple Weighting Matrices Selection Scheme Based on Orthogonal Random Beamforming for MIMO Downlink System

摘要

In this paper, a multiple weighting matrices selection scheme based on orthogonal random beamforming is discussed to increase the throughput of the multi-user MIMO systems. Multiple weighting matrices are performed and computed during the mini-slots. And the base station selects the best matrix based on the partial channel state information and performs the orthogonal random beamforming during the time slot. The proposed scheme over multiuser random beamforming can increase the throughput of multi-user MIMO system significantly, and the simulation results show the validity.