DocumentCode :
3237559
Title :
Maximum SINR transmit beamforming for multiuser MIMO systems with limited feedback
Author :
Xi, Songnan ; Zoltowski, Michael D.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN
fYear :
2009
fDate :
March 30 2009-April 1 2009
Firstpage :
1
Lastpage :
5
Abstract :
The Lloyd´s vector quantization method is adopted to design a codebook for multiuser transmit beamforming vectors over multiple-input multiple-output (MIMO) channels which only allow limited feedback. The beamformer code-book is designed to maximize the post-processing signal-to-interference-plus-noise ratio (SINR), and the resulting codebook is called maximum SINR (MSINR) codebook. The MSINR cooperative beamforming algorithm proposed in our previous work under the assumption that the instant channel information of all users is perfectly known to each user as well as the receiver is modified to obtain the code for a given set of channel samples, which is the key step in the Lloyd´s method. The obtained codebook, as revealed by the numerical results, is robust to a wide range of deviation of the actual transmit SNR from that associated with a codebook..
Keywords :
MIMO communication; multiuser channels; numerical analysis; vector quantisation; wireless channels; Lloyd vector quantization method; beamformer codebook; limited feedback; maximum SINR transmit beamforming; multiple-input multiple-output channels; multiuser MIMO systems; numerical results; post-processing signal-to-interference-plus-noise ratio; AWGN; Algorithm design and analysis; Array signal processing; Base stations; Books; Feedback; Iterative algorithms; MIMO; Rayleigh channels; Signal to noise ratio; Limited Feedback; Lloyd´s method; MIMO; Multiuser; Transmit Beamforming;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sarnoff Symposium, 2009. SARNOFF '09. IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-3381-0
Electronic_ISBN :
978-1-4244-3382-7
Type :
conf
DOI :
10.1109/SARNOF.2009.4850345
Filename :
4850345
Link To Document :
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