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


Vol. 35,  No. 3, pp. 260-268, Mar.  2010


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  Abstract

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 multiple-input 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 non-iterative 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.

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  Cite this article

[IEEE Style]

H. Lee, K. Lee, I. Lee, "Regularized Channel Inversion for Multiple-Antenna Users in Multiuser MIMO Downlink," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 3, pp. 260-268, 2010. DOI: .

[ACM Style]

Heunchul Lee, Kwangwon Lee, and Inkyu Lee. 2010. Regularized Channel Inversion for Multiple-Antenna Users in Multiuser MIMO Downlink. The Journal of Korean Institute of Communications and Information Sciences, 35, 3, (2010), 260-268. DOI: .

[KICS Style]

Heunchul Lee, Kwangwon Lee, Inkyu Lee, "Regularized Channel Inversion for Multiple-Antenna Users in Multiuser MIMO Downlink," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 3, pp. 260-268, 3. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880