Generalized eigenvector problem for Hermitian Toeplitz matrices and its application to beamforming

Authors:
Lei Zhang;Wei Liu;Bo Peng
Affiliations:
Communications Research Group, Department of Electronic and Electrical Engineering, University of Sheffield, UK;Communications Research Group, Department of Electronic and Electrical Engineering, University of Sheffield, UK;Communications Research Group, Department of Electronic and Electrical Engineering, University of Sheffield, UK
Venue:
Signal Processing
Year:
2012

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Abstract

The generalized eigenvector problem (GEP) for Hermitian Toeplitz matrices is studied and some properties related to its eigenvectors and the associated eigenfilters are derived. Zero locations of the eigenfilters are also investigated and all of the results are applied to the maximum SINR (signal-to-interference-plus-noise ratio) beamforming problem based on ULAs (uniform linear arrays), since maximizing output SINR can be formulated as a generalized eigenvector problem where the matrix pair consisting of the desired signal correlation matrix and interference plus noise correlation matrix. Theoretical analysis based on a three-element ULA is provided, supported by simulations.