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Regularized Channel Inversion for Multiple-Antenna users in Multiuser MIMO Downlink

9 years 4 months ago
Regularized Channel Inversion for Multiple-Antenna users in Multiuser MIMO Downlink
— Channel inversion is one of the simplest techniques for multiuser downlink systems with single-antenna users. In this paper, we extend the regularized channel inversion technique developed for the single-antenna user case to multiuser multipleinput multiple-output (MIMO) channels with multiple-antenna users. We first employ the multiuser preprocessing to project the multiuser signals near the null space of the unintended users based on the MMSE criterion, and then the single-user preprocessing is applied to the decomposed MIMO interference channels. In order to reduce the complexity, we focus on noniterative solutions for the multiuser transmit beamforming and use a linear receiver based on an MMSE criterion. Simulation results show that the proposed scheme outperforms existing joint iterative algorithms in most multiuser configurations.
Heunchul Lee, Kwangwon Lee, Bertrand M. Hochwald,
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Heunchul Lee, Kwangwon Lee, Bertrand M. Hochwald, Inkyu Lee
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