Resolving ambiguities in subspace-based blind receiver for MIMO channels

Author

Visuri, S. ; Koivunen, Visa

Author_Institution

Signal Process. Lab., Helsinki Univ. of Technol., Finland

Volume

1

fYear

2002

fDate

3-6 Nov. 2002

Firstpage

589

Abstract

The problem of subspace based blind channel estimation in FIR-MIMO systems is addressed in this paper. In such blind MIMO methods, some ambiguities always remain. They may be expressed in a form of full rank mixing matrix. In this paper, a two-stage receiver algorithm solving these ambiguities is proposed. The FIR-MIMO model is identified first followed by equalization stage. The ambiguity remaining after the equalizer is modeled as an instantaneous MIMO system. This system is solved using independent component analysis (ICA) using the assumption that transmitted sequences is statistically independent and non-Gaussian.

Keywords

FIR filters; MIMO systems; blind equalisers; channel estimation; independent component analysis; FIR-MIMO channel identification; FIR-MIMO systems; ICA; ambiguities; channel estimation; equalization stage; finite impulse response; independent component analysis; instantaneous MIMO; mixing matrix; multiple input multiple output; nonGaussian; pseudoinversion; subspace-based blind receiver; two-stage receiver algorithm; Blind equalizers; Finite impulse response filter; Independent component analysis; Laboratories; MIMO; Receiving antennas; Signal processing; Signal processing algorithms; Signal resolution; System identification;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7576-9

Type

conf

DOI

10.1109/ACSSC.2002.1197249

Filename

1197249