A Soft Output Enhancement Technique for Spatially Multiplexed MIMO Systems 


Vol. 33,  No. 9, pp. 734-742, Sep.  2008


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  Abstract

In spatially multiplexed MIMO systems that enable high data rate transmission over wireless communication channels, the spatial demultiplexing at the receiver is a challenging task, and various demultiplexing methods have been developed. Among the previous methods, maximum likelihood detection with QR decomposition and M-algorithm (QRM-MLD), sphere decoding (SD), QOC, and MOC schemes have been reported to achieve a (near) maximum likelihood (ML) hard decision performance. In general, however, the reliability of soft output of these schemes is not satisfactory. In this paper, we propose a method which enhances the reliability of soft output. By computer simulations, we demonstrate the improved performance by the proposed method.

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  Cite this article

[IEEE Style]

J. Kim, T. Im, J. Kim, J. Yi, Y. S. Cho, "A Soft Output Enhancement Technique for Spatially Multiplexed MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 734-742, 2008. DOI: .

[ACM Style]

Jin-Min Kim, Tae-Ho Im, Jae-Kwon Kim, Joo-Hyun Yi, and Yong Soo Cho. 2008. A Soft Output Enhancement Technique for Spatially Multiplexed MIMO Systems. The Journal of Korean Institute of Communications and Information Sciences, 33, 9, (2008), 734-742. DOI: .

[KICS Style]

Jin-Min Kim, Tae-Ho Im, Jae-Kwon Kim, Joo-Hyun Yi, Yong Soo Cho, "A Soft Output Enhancement Technique for Spatially Multiplexed MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 734-742, 9. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880