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Forming a beam (directional gain) and, sometimes, shifting the beam direction.

3 votes
2 answers
103 views

Proving that a product of matrices invertible

Positive Definite (PD) covariance matrix of size $M\times M$ and $C$ a full rank $M \times N$ matrix, I want to prove that $C^* R_x^{-1} C$ is invertible to derive the Linearly Constrained Minimum Variance Beamforming
Oriol B's user avatar
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