Blind identifiability of certain classes of multipath channels from second-order statistics using antenna arrays

Author

Reddy, Vellenki U. ; Papadias, Constantinos B. ; Paulraj, Arogyaswami J.

Author_Institution

Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India

Volume

4

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

138

Lastpage

141

Abstract

Recently, Ding (see IEEE Signal Processing Lett., vol.3, p.150-2, May 1996) has pointed out several classes of multipath channels that are not blindly identifiable from fractionally spaced samples and second-order cyclic spectra. In this letter, we consider the blind identification problem using multiple antennas and show that the multipath channels will not give rise to any common roots among the subchannels formed from the antennas and, hence, they can be identified from second-order statistics. In our development, we will point out the role of band-limitedness of the channels in characterizing different classes.

Keywords

antenna arrays; array signal processing; identification; multipath channels; statistical analysis; antenna array; band-limited channels; blind identification; fractionally spaced samples; multipath channels; multiple antennas; second-order cyclic spectra; second-order statistics; Additive noise; Antenna arrays; Baseband; Filters; Frequency; Multipath channels; Sampling methods; Sensor arrays; Statistics; Transmitters;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/97.575558

Filename

575558