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PIER PIER B PIER C PIER M PIER Letters
2012-02-26
On Adaptive Beamforming for Coherent Interference Suppression via Virtual Antenna Array
By
Wenxing Li,

    Dr. Wenxing Li

    College of Information and Communications Engineering

    Harbin Engineering University

    China

    Homepage

Yi-Peng Li,

    Dr. Yi-Peng Li

    College of Information and Communication Engineering

    Harbin Engineering University

    China

    Homepage

Wen-Hua Yu

    Dr. Wen-Hua Yu

    Electromagnet Commun Lab

    USA

    Homepage

Progress In Electromagnetics Research, Vol. 125, 165-184, 2012
doi:10.2528/PIER12010802
Abstract
In this paper, we propose Modified Interpolated Spatial Smoothing (MISS) algorithm that solves the problem when the inhibition gain generated by Interpolated Spatial Smoothing (ISS) algorithm is not sufficiently high in virtual antenna adaptive beam forming to suppress coherent interference. Using the subspace projection concept, this paper establishes an interference subspace spanned by the interference steering vectors of the virtual antenna array, and then the interference direction information can be imported into the transformation matrix by projecting the transformation matrix into the subspace, which will make the interference components in virtual smoothing covariance matrix enhanced as it is demonstrated by theoretical analysis. Employing the Minimum Variance Distortionless Response (MVDR) beam forming method, the interference inhibition gain and Signal to Interference and Noise Ratio (SINR) performance can be significantly improved.
Citation
Wenxing Li, Yi-Peng Li, and Wen-Hua Yu, "On Adaptive Beamforming for Coherent Interference Suppression via Virtual Antenna Array," Progress In Electromagnetics Research, Vol. 125, 165-184, 2012.
doi:10.2528/PIER12010802
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