Designs of Training Signals for Spatially Correlated Multi-User MIMO-OFDM

Author

Tran, Nguyen N. ; Nguyen, Ha H. ; Tuan, Hoang D. ; Dodds, David E.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Saskatchewan, Saskatoon, SK, Canada

fYear

2011

fDate

5-9 June 2011

Firstpage

1

Lastpage

6

Abstract

Optimal training design and channel estimation for spatially correlated multi-user multi-input multi-output with orthogonal frequency-division multiplexing (MIMO-OFDM) systems is still an open research topic of great interest. This paper applies tractable semi-definite programming to obtain the optimal training signal for the general case of spatial channel correlations for multi-user MIMO-OFDM. The optimal solution in closed-form expression is also derived for a special case of transmit correlations. Analytical and simulation results demonstrate the excellent performance of the proposed designs and their performance advantage over the equi-powered training designs.

Keywords

MIMO communication; OFDM modulation; channel estimation; channel estimation; multiinput multioutput systems; optimal training design; orthogonal frequency-division multiplexing systems; spatially correlated multiuser MIMO-OFDM; tractable semidefinite programming; training signals; Channel estimation; Correlation; OFDM; Receiving antennas; Signal to noise ratio; Training; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2011 IEEE International Conference on

Conference_Location

Kyoto

ISSN

1550-3607

Print_ISBN

978-1-61284-232-5

Electronic_ISBN

1550-3607

Type

conf

DOI

10.1109/icc.2011.5962970

Filename

5962970