Blind MIMO FIR channel identification based on second-order spectra correlations

Author

Bradaric, Ivan ; Petropulu, Athina P. ; Diamantaras, Konstantinos I.

Author_Institution

Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA

Volume

51

Issue

6

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

1668

Lastpage

1674

Abstract

We consider a problem of identifying a multiple-input multiple-output (MIMO) finite impulse response (FIR) system excited by colored inputs with known statistics. We propose a new, nonlinear optimization-based method that involves the power spectra and cross-spectra of the system output. The proposed algorithm is tested for the case of cyclostationary inputs (CDMA scenario) and stationary inputs (SDMA scenario). Simulation results indicate that the proposed scheme works well, even for large order systems, and is robust to noise and channel length mismatch.

Keywords

MIMO systems; channel estimation; code division multiple access; correlation methods; identification; optimisation; space division multiple access; spectral analysis; transient response; CDMA; FIR system; SDMA; blind MIMO FIR channel identification; blind channel estimation; channel length mismatch; colored inputs; cross-spectra; cyclostationary inputs; finite impulse response system; multiple-input multiple-output system; nonlinear optimization-based method; power spectra; robust noise systems; second-order spectra correlations; simulation results; stationary inputs; statistics; Finite impulse response filter; Frequency domain analysis; Higher order statistics; Information filtering; Information filters; MIMO; Multiaccess communication; Noise robustness; Optimization methods; Testing;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2003.811234

Filename

1200157