Beamformer Design with Feedback Rate Constraints : Criteria and Constructions

Abstract

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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Conference paper
Keywords
Multiple antennas, MIMO systems, beamforming, quantizer, feedback
Citation

K. K. Mukkavilli, A. Sabharwal, E. Erkip and B. Aazhang, "Beamformer Design with Feedback Rate Constraints : Criteria and Constructions," 2003.

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