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MIMO systems with full and reduced hardware complexity

MIMO-Systeme mit voller oder reduzierter Komplexität

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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.

Abstract

MIMO(multipler input — multipler output)-Systeme versprechen enorme Steigerungen der Übertragungskapazität digitaler Mobilfunksysteme, ohne mehr Spektrum zu brauchen. Der vorliegende Artikel gibt zunächst einen Überblick über die Verwendung von MIMO für Diversität oder Raummultiplex und die Verwendung von Information über den Kanalzustand. Der Artikel beschreibt dann die Verwendung von Antennenauswahl zur Reduktion der Hardwarekomplexität. Es wird gezeigt, dass ihre Leistungsfähigkeit für Raummultiplex beinahe so hoch ist wie die von Systemen mit voller Komplexität, solange nur die Zahl der Frequenzumsetzerzüge mindestens so groß ist wie die Zahl der verwendeten Datenströme.

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Authors and Affiliations

  1. Mitsubishi Electric Research Labs, Cambridge, MA, USA

    A. Molisch Prof. Dipl.-Ing. Dr. techn.

  2. Department of Electroscience, Lund University, Sweden

    A. Molisch Prof. Dipl.-Ing. Dr. techn.

Authors
  1. A. Molisch Prof. Dipl.-Ing. Dr. techn.
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Correspondence to A. Molisch Prof. Dipl.-Ing. Dr. techn..

Additional information

Dedicated to Prof. Dr. Ernst Bonek, on the occasion of his retirement.

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Molisch, A. MIMO systems with full and reduced hardware complexity. Elektrotech. Inftech. 122, 85–90 (2005). https://doi.org/10.1007/BF03054041

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  • DOI: https://doi.org/10.1007/BF03054041

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