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Interference Mitigation in MIMO Systems by Subset Antenna Transmission

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Abstract

This paper investigates subset antenna transmission (SAT) for multiple-input multiple-output (MIMO) systems in the presence of strong dominant co-channel interferer. The capacity gain from SAT is investigated in the context of optimal antenna subset selection and power allocation. The SAT does not require channel state information of the co-channel interference, and achieves capacity gains by distributing the transmit power equally over a selected subset of the transmit antennas. The capacity gain of the SAT method is analyzed in terms of transmit power and eigenvalues of channel matrix, and its performance in V-BLAST MIMO systems with various signal constellations is evaluated by computer simulation.

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Authors and Affiliations

  1. Samsung Electro-Mechanics, Kyongi-do, 442-743, South Korea

    Kihong Kim

  2. School of ECE, Georgia Institute of Technology, Atlanta, GA, 30332-0250, USA

    Gordon L. Stüber

Authors
  1. Kihong Kim
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  2. Gordon L. Stüber
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Correspondence to Gordon L. Stüber.

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Kim, K., Stüber, G.L. Interference Mitigation in MIMO Systems by Subset Antenna Transmission. Wireless Pers Commun 40, 305–315 (2007). https://doi.org/10.1007/s11277-006-9192-9

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  • DOI: https://doi.org/10.1007/s11277-006-9192-9

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