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2012-02-26
On Adaptive Beamforming for Coherent Interference Suppression via Virtual Antenna Array
By
Progress In Electromagnetics Research, Vol. 125, 165-184, 2012
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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