A New Efficient Group-wise Spatial Multiplexing Design for Closed-Loop MIMO Systems 


Vol. 35,  No. 4, pp. 322-331, Apr.  2010


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  Abstract

This paper introduces a new efficient design scheme for spatial multiplexing (SM) systems over closed loop multiple-input multiple-output (MIMO) wireless channels. Extending the orthogonalized spatial multiplexing (OSM) scheme which was developed recently for transmitting two data streams, we propose a new SM scheme where a larger number of data streams can be supported. To achieve this goal, we partition the data streams into several subblocks and execute the block-diagonalization process at the receiver. The proposed scheme still guarantees single-symbol maximum likelihood (ML) detection with small feedback information. Simulation results verify that the proposed scheme achieves a huge performance gain at a bit error rate (BER) of 10?⁴ over conventional closed-loop schemes based on minimum mean-square error (MSE) or bit error rate (BER) criterion. We also show that an additional 2.5㏈ gain can be obtained by optimizing the group selection with extra feedback information.

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  Cite this article

[IEEE Style]

S. Moon, H. Lee, Y. Kim, I. Lee, "A New Efficient Group-wise Spatial Multiplexing Design for Closed-Loop MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 322-331, 2010. DOI: .

[ACM Style]

Sung-Hyun Moon, Heunchul Lee, Young-Tae Kim, and Inkyu Lee. 2010. A New Efficient Group-wise Spatial Multiplexing Design for Closed-Loop MIMO Systems. The Journal of Korean Institute of Communications and Information Sciences, 35, 4, (2010), 322-331. DOI: .

[KICS Style]

Sung-Hyun Moon, Heunchul Lee, Young-Tae Kim, Inkyu Lee, "A New Efficient Group-wise Spatial Multiplexing Design for Closed-Loop MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 322-331, 4. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880