Pilot-Based Channel Estimation in Spatially Correlated MIMO Systems

Author

Dadkhah, M.R. ; Doost-hosseini, A.M. ; Sharifian, A.R. ; Ahmadi, B.

Author_Institution

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan

fYear

2008

Firstpage

1

Lastpage

4

Abstract

In this paper, the problem of channel estimation in spatially correlated multi-input multi-output (MIMO) channel is investigated. We consider minimum mean square error (MMSE) criterion which requires accurate knowledge about second order statistics of the channel and noise. In our method, the output of the least square estimator is exploited to estimate the channel correlation matrix and noise variance using the same training sequences. Advantages of this method over methods that ignore correlation among sub-channels will be demonstrated in the sense of mean square of estimation error and bit-error rate.

Keywords

MIMO communication; channel estimation; correlation methods; error statistics; least mean squares methods; matrix algebra; sequences; MMSE; bit-error rate; channel correlation matrix; minimum mean square error estimation; multi input multi output channel; pilot-based channel estimation; second order statistics; spatially correlated MIMO system; Channel estimation; Error analysis; Estimation error; Least squares approximation; MIMO; Matrix decomposition; Mean square error methods; Parameter estimation; Scattering; Transmitters; Channel correlation matrix; MIMO channels; Mean Square Error; Training sequances;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technologies: From Theory to Applications, 2008. ICTTA 2008. 3rd International Conference on

Conference_Location

Damascus

Print_ISBN

978-1-4244-1751-3

Electronic_ISBN

978-1-4244-1752-0

Type

conf

DOI

10.1109/ICTTA.2008.4530223

Filename

4530223