Multiuser MIMO downlink beamforming based on group maximum SINR filtering with per stream power allocation

Authors:
Yu-Han Yang;Shih-Chun Lin;Hsuan-Jung Su
Affiliations:
Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan;Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan;Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Multiuser MIMO downlink beamforming based on group maximum SINR filtering with per stream power allocation

ICC'09 Proceedings of the 2009 IEEE international conference on Communications

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Abstract

We propose an algorithm which iteratively computes the transmit-receive beamforming filters and the power allocation matrix to solve the multiuser multi-input multi-output (MIMO) downlink beamforming problem under signal-to-interference-plus-noise-ratio (SINR) constraints. The transmitter is a multi-antenna base-station broadcasting to users. Each user has multiple antennas at the receiver. The beamforming filter is a group maximum SINR filter which exploits intra-group cooperation, and the power allocated to each data stream is adjusted to enhance performance. Simulation results verify the superiority of the proposed algorithm over previous works.