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Title:
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Beamformer Design with Feedback Rate Constraints : Criteria and Constructions |
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Author:
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Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Erkip, Elza; Aazhang, Behnaam
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Type:
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Conference Paper |
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Keywords:
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Multiple antennas; MIMO systems; beamforming; quantizer; feedback |
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Citation:
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K. K. Mukkavilli, A. Sabharwal, E. Erkip and B. Aazhang,"Beamformer Design with Feedback Rate Constraints : Criteria and Constructions," in IEEE Symposium on Information Theory, |
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Abstract:
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In this work, we provide a geometrical framework for the analysis and design of beamformer codebooks with finite number of beamformer vectors. We present a design criterion for good beamfomer codebooks and show the equivalence of the beamformer design problem to two other known problems. First, the beamformer design problem can be directly posed as a problem of packing
2
dimensional subspaces in a
2t
dimensional Grassmannian manifold,
t
being the number of transmit antennas. And second, under certain conditions, the beamformer design problem is equivalent to the construction of unitary space time constellations. |
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Date Published:
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2003-07-20 |
