MIMO systems with full and reduced hardware complexity |
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Authors: | A. Molisch Prof. Dipl.-Ing. Dr. techn. |
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Affiliation: | 1. Mitsubishi Electric Research Labs, Cambridge, MA, USA 2. Department of Electroscience, Lund University, Sweden
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Abstract: | MIMO (multiple-input-multiple-output) systems propose enormous gains in the capacity of wireless systems without requiring more spectral resources. This paper first gives an overview of the use of MIMO for diversity and spatial multiplexing, and the use of channel state information in MIMO systems. It then explores the use of antenna selection as a means for the reduction of the hardware complexity. It is shown that the performance in a spatial-multiplexing application is almost as good as that of full-complexity systems as long as the number of RF chains is at least as large as the number of data streams. |
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