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

Authors:
Li Tan;Gang Su;Guangxi Zhu;Peng Shang
Affiliations:
Department of Electronics & Information Engineering, Huazhong University of Science & Technology, Wuhan, P.R.China 430074;Department of Electronics & Information Engineering, Huazhong University of Science & Technology, Wuhan, P.R.China 430074;Department of Electronics & Information Engineering, Huazhong University of Science & Technology, Wuhan, P.R.China 430074;Department of Electronics & Information Engineering, Huazhong University of Science & Technology, Wuhan, P.R.China 430074
Venue:
ISNN 2009 Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III
Year:
2009

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Abstract

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 multi-user random beamforming can increase the throughput of multi-user MIMO system significantly, and the simulation results show the validity.