An efficient interference canceler

Author

Yongbo, Zhao ; Huarui, Liu ; Shouhong, Zhang

Author_Institution

Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China

fYear

2001

fDate

2001

Firstpage

698

Lastpage

702

Abstract

This paper deals with adaptive interference cancellation in the presence of array imperfections and beam pointing error. A new interference canceler with robust capabilities is proposed. This interference canceler first obtains the modified interference subspace (MIS) by employing the covariance differencing technique, then it obtains the projection vector of the steering vector of the desired signal onto the orthogonal complementary space of the MIS as the weight vector. Compared to the eigenanalysis interference canceler (EIC), the proposed interference canceler is not only robust to the array complex gain errors, but also to beam pointing error. The performance of this interference canceler is examined via simulations

Keywords

adaptive signal processing; array signal processing; covariance matrices; eigenvalues and eigenfunctions; interference suppression; adaptive interference cancellation; array complex gain errors; array imperfections; beam pointing error; covariance differencing technique; covariance matrix; efficient interference canceler; eigenanalysis interference canceler; interference canceler performance; modified interference subspace; orthogonal complementary space; projection vector; simulations; steering vector; uniform linear array; Adaptive arrays; Covariance matrix; Eigenvalues and eigenfunctions; Interference cancellation; Interference constraints; Robustness; Sensor arrays; Sensor phenomena and characterization; Signal to noise ratio; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2001 CIE International Conference on, Proceedings

Conference_Location

Beijing

Print_ISBN

0-7803-7000-7

Type

conf

DOI

10.1109/ICR.2001.984812

Filename

984812