Semi-blind multi-user MIMO channel estimation based on Capon and MUSIC techniques

Author

ShahbazPanahi, Shahram ; Gershman, Alex B. ; Giannakis, Georgios B.

Author_Institution

Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada

Volume

4

fYear

2005

fDate

18-23 March 2005

Abstract

We consider the problem of simultaneous estimation of the channel state information (CSI) of several transmitters that use orthogonal space-time block codes to communicate with a single receiver. Based on the generalizations of the Capon and MUSIC techniques, we propose two novel algorithms to estimate multi-user MIMO channels. These algorithms estimate the subspace spanned by the user channels blindly and use only a few training blocks to extract the users´ CSI from this subspace.

Keywords

MIMO systems; block codes; channel coding; channel estimation; multiuser channels; radio links; radio receivers; radio transmitters; signal classification; space-time codes; CSI; Capon; MIMO channel estimation; MUSIC; channel state information; orthogonal space-time block codes; receiver; semi-blind multi-user channel estimation; simultaneous estimation; subspace estimation; transmitters; Bandwidth; Block codes; Channel estimation; Channel state information; Decoding; Interference suppression; MIMO; Multiple signal classification; State estimation; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8874-7

Type

conf

DOI

10.1109/ICASSP.2005.1416123

Filename

1416123