Blind indentifiability of a band-limited nonminimum phase system from its output autocorrelation

Author

Chen, Yuanjie ; Nikias, Chrysostomos L.

Author_Institution

Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA

Volume

4

fYear

1993

fDate

27-30 April 1993

Firstpage

444

Abstract

The authors address the problem of blind identification of a band-limited nonminimum-phase channel from its output autocorrelation when the input is a discrete-time white noise sequence. It has been well established in the literature that when the input to a linear-time-invariant (LTI) channel (system) is a continuous-time white noise, the identification of the phase of the channel from its output autocorrelation is impossible. To make the channel identification from its output autocorrelation unique, it is necessary to know a priori the whole phase response of the channel. It is shown that when the input is a discrete-time white noise sequence, what is needed to make the channel identification from its output autocorrelation unique is reduced to the phase response in the frequency range of -1/2T>

Keywords

correlation methods; identification; telecommunication channels; white noise; band-limited nonminimum-phase channel; blind identification; discrete-time white noise sequence; output autocorrelation; phase response;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on

Conference_Location

Minneapolis, MN, USA

ISSN

1520-6149

Print_ISBN

0-7803-7402-9

Type

conf

DOI

10.1109/ICASSP.1993.319690

Filename

319690