Subspace Method Based Precoding for Spatial Multiplexing with Limited Feedback 


Vol. 30,  No. 10, pp. 906-911, Oct.  2005


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  Abstract

In this paper, for spatial multiplexing with limited feedback, we propose subspace method based precoding in which the active bases are selected at the receiver from a finite number of basis sets known at both receiving and transmitting ends, conveyed to the transmitter using limited feedback, and assembled into a precoding matrix at the transmitter. The selected bases are conveyed to the transmitter using feedback information on both the index of the selected basis set, which defines the most appropriate set of coordinates for describing a multiple-input multiple-output (MIMO) channel, and the principal bases maximizing the capacity in the selected basis set. We show that the proposed subspace method based precoding provides a capacity similar to that of the closed-loop MIMO even with limited feedback.

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  Cite this article

[IEEE Style]

C. Mun and J. Seo, "Subspace Method Based Precoding for Spatial Multiplexing with Limited Feedback," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 906-911, 2005. DOI: .

[ACM Style]

Cheol Mun and Jeong-Tae Seo. 2005. Subspace Method Based Precoding for Spatial Multiplexing with Limited Feedback. The Journal of Korean Institute of Communications and Information Sciences, 30, 10, (2005), 906-911. DOI: .

[KICS Style]

Cheol Mun and Jeong-Tae Seo, "Subspace Method Based Precoding for Spatial Multiplexing with Limited Feedback," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 906-911, 10. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880