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      On the capacity of MIMO systems with amplitude-limited inputs

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      Author
      Elmoslimany, A.
      Duman, Tolga M.
      Date
      2014
      Source Title
      Proceedings of the International Black Sea Conference on Communications and Networking, IEEE 2014
      Publisher
      IEEE
      Pages
      97 - 101
      Language
      English
      Type
      Conference Paper
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      Abstract
      In this paper, we study the capacity of multiple-input multiple-output (MIMO) systems under the constraint that amplitude-limited inputs are employed. We compute the channel capacity for the special case of multiple-input singleo-utput (MISO) channels, while we are only able to provide upper and lower bounds on the capacity of the general MIMO case. The bounds are derived by considering an equivalent channel via singular value decomposition, and by enlarging and reducing the corresponding feasible region of the channel input vector, for the upper and lower bounds, respectively. We analytically characterize the asymptotic behavior of the derived capacity upper and lower bounds for high and low noise levels, and study the gap between them. We further provide several numerical examples illustrating their computation.
      Keywords
      Asymptotic behaviors
      Channel inputs
      Equivalent channels
      Feasible regions
      Low noise levels
      Multiple inputs
      Multiple-input-multiple-output systems
      Upper and lower bounds
      MIMO systems
      Permalink
      http://hdl.handle.net/11693/27297
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/BlackSeaCom.2014.6849013
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      • Department of Electrical and Electronics Engineering 3524
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