Adaptive suppression of wideband interferences in spread-spectrum communications using the Wigner-Hough transform

Author

Barbarossa, S. ; Scaglione, A. ; Spalletta, S. ; Votini, S.

Author_Institution

INFOCOM Dept., Rome Univ., Italy

Volume

5

fYear

1997

fDate

21-24 Apr 1997

Firstpage

3861

Abstract

The aim of this paper is to propose an adaptive method for suppressing wideband interferences in spread spectrum (SS) communications. The proposed method is based on the time-frequency representation of the received signal, from which the parameters of an adaptive time-varying interference excision filter are estimated. The approach is based on the generalized Wigner-Hough transform as an effective way to estimate the instantaneous frequency of parametric signals embedded in noise. The performance of the proposed approach are evaluated in the presence of chirp-like interferences plus noise

Keywords

Hough transforms; Wigner distribution; adaptive filters; chirp modulation; digital filters; frequency estimation; interference suppression; noise; signal representation; spread spectrum communication; time-frequency analysis; time-varying filters; Wigner-Hough transform; adaptive suppression; adaptive time-varying interference excision filter; chirp-like interference; instantaneous frequency; noise; parametric signals; performance; received signal; spread-spectrum communications; time-frequency representation; wideband interference; Adaptive filters; Additive white noise; Frequency estimation; Gaussian noise; Interference suppression; Multiaccess communication; Parameter estimation; Spread spectrum communication; Time frequency analysis; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.604738

Filename

604738