Eigenanalysis interference cancellers with robust capabilities
Resource
Signal Processing 58 (2): 193-202
Journal
Signal Processing
Journal Volume
58
Journal Issue
2
Pages
193-202
Date Issued
1997
Date
1997
Author(s)
Lee, Cheng-Chou
Abstract
The maximum rejection of interference in the presence of steering angle error for adaptive array processing is considered. It has been shown that eigenanalysis interference cancellers (EICs) possess the advantage of providing maximal suppression of undesired interference with fast convergence over conventional adaptive beamformers. However, the performance of EICs is also very sensitive to steering angle error when the number of signal sources is overestimated. We present an artificial source injection technique to make EICs have robust capabilities against steering angle error. Modifications for enhancing the proposed technique are also presented. It is shown that the proposed technique can alleviate the drawback like the loss of degrees of freedom when using existing EICs. Simulation examples are provided for illustrating the effectiveness of the proposed technique. © 1997 Elsevier Science B.V.
Subjects
Adaptive control systems; Computer simulation; Convergence of numerical methods; Eigenvalues and eigenfunctions; Robustness (control systems); Eigenanalysis interference cancellers (EIC); Steering angle error; Interference suppression
SDGs
Type
journal article
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