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Multiple-antenna signal constellations for fading channels

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3 Author(s)
D. Agrawal ; Bell Labs., Lucent Technol., Murray Hill, NJ, USA ; T. J. Richardson ; R. L. Urbanke

In this correspondence, we show that the problem of designing efficient multiple-antenna signal constellations for fading channels can be related to the problem of finding packings with large minimum distance in the complex Grassmannian space. We describe a numerical optimization procedure for finding good packings in the complex Grassmannian space and report the best signal constellations found by this procedure. These constellations improve significantly upon previously known results

Published in:

IEEE Transactions on Information Theory  (Volume:47 ,  Issue: 6 )