An upper bound for limited rate feedback MIMO capacity

  • Authors:
  • Gökhan M. Güvensen;A. Özgür Yilmaz

  • Affiliations:
  • Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, Turkey;Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, Turkey

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2009

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Abstract

We develop a technique to upper bound the point-to-point MIMO limited rate feedback (LRF) capacity under a wide class of vector quantization schemes. The upper bound turns out to be tight and can also be used to obtain an absolute upper bound by using a bounding distribution for Grassmannian beamforming. The bounding technique can be applied to other problems requiring the exact evaluation of the expected value of matrix determinant.