DocumentCode
3276221
Title
Adaptive Antenna Scaling for Multi-User MIMO Downlink Zero-Forcing Transmissions with Finite Rate Feedback
Author
Park, Ki-Hong ; Ko, Young-Chai ; Yang, Hong-Chuan ; Kim, James S.
Author_Institution
Korea Univ., Seoul
fYear
2008
fDate
March 31 2008-April 3 2008
Firstpage
661
Lastpage
665
Abstract
In this paper, we introduce a new zero-forcing beamforming (ZFBF) transmission scheme for multi-user MIMO Gaussian channel with finite rate feedback. With this transmission scheme, the base station adaptively utilizes transmit antennas according to the channel status and the number of active users to control the multiuser interference. We show through selected numerical results that our proposed scheme can achieve remarkable sum-rate improvement compared to other schemes with fixed transmit antennas.
Keywords
MIMO communication; adaptive antenna arrays; adaptive antenna scaling; channel status; finite rate feedback; multiple input multiple output; multiuser MIMO Gaussian channel; multiuser MIMO downlink; multiuser interference; zero-forcing beamforming transmission; Adaptive arrays; Antenna feeds; Array signal processing; Base stations; Downlink; Feedback; Gaussian channels; Interference; MIMO; Transmitting antennas;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
Conference_Location
Las Vegas, NV
ISSN
1525-3511
Print_ISBN
978-1-4244-1997-5
Type
conf
DOI
10.1109/WCNC.2008.122
Filename
4489153
Link To Document