Title :
An efficient interference canceler
Author :
Yongbo, Zhao ; Huarui, Liu ; Shouhong, Zhang
Author_Institution :
Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China
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;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984812
