ON ADAPTIVE BEAMFORMING FOR COHERENT INTERFERENCE SUPPRESSION VIA VIRTUAL ANTENNA ARRAY | Zendy

Wenxing Li | Zendy; Yi-Peng LI | Zendy; Wenhua Yu | Zendy

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ON ADAPTIVE BEAMFORMING FOR COHERENT INTERFERENCE SUPPRESSION VIA VIRTUAL ANTENNA ARRAY

Author(s) -

Wenxing Li,

Yi-Peng LI,

Wenhua Yu

Publication year - 2012

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier12010802

Subject(s) - beamforming , adaptive beamformer , interference (communication) , antenna array , antenna (radio) , computer science , electronic engineering , smart antenna , acoustics , telecommunications , physics , engineering , dipole antenna , channel (broadcasting)

In this paper, we propose Modifled Interpolated Spatial Smoothing (MISS) algorithm that solves the problem when the inhibition gain generated by Interpolated Spatial Smoothing (ISS) algorithm is not su-ciently 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 signiflcantly improved.

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