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Capacity of the isotropic fading multiple antenna downlink with magnitude feedback

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2 Author(s)
Srinivasa, S. ; California Univ., Irvine, CA, USA ; Jafar, S.A.

We determine the capacity region of a single-cell isotropic fading multiple antenna downlink with perfect channel knowledge at the mobiles and only the knowledge of the magnitudes of the users' channel vectors at the base station. Using a scalar upperbound, we are able to prove the optimality of Gaussian codebooks on this vector broadcast channel. Numerical results are provided to compare magnitude feedback against opportunistic beamforming and antenna selection.

Published in:
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th  (Volume:3 )

Date of Conference: 26-29 Sept. 2004

Page(s):
2001 - 2005 Vol. 3
ISSN :
1090-3038
Print ISBN:
0-7803-8521-7
INSPEC Accession Number:
8436545
Digital Object Identifier :
10.1109/VETECF.2004.1400389
Product Type:
Conference Publications

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