DocumentCode
428223
Title
Capacity of the isotropic fading multiple antenna downlink with magnitude feedback
Author
Srinivasa, Sudhir ; Jafar, Syed Ali
Author_Institution
California Univ., Irvine, CA, USA
Volume
3
fYear
2004
fDate
26-29 Sept. 2004
Firstpage
2001
Abstract
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.
Keywords
broadcast channels; cellular radio; channel capacity; fading channels; feedback; Gaussian codebooks; antenna selection; base station; cellular systems; channel vectors; isotropic fading multiple antenna downlink capacity; magnitude feedback; mobiles; opportunistic beamforming; perfect channel knowledge; scalar upperbound; single-cell downlink; vector broadcast channel; Antenna feeds; Base stations; Broadcasting; Channel state information; Downlink; Fading; Feedback; Receiving antennas; Transmitters; Transmitting antennas;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
ISSN
1090-3038
Print_ISBN
0-7803-8521-7
Type
conf
DOI
10.1109/VETECF.2004.1400389
Filename
1400389
Link To Document