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Minimum variance distortionless response (MVDR) beamforming is known to degrade due to effects of imprecise knowledge about the steering vector and finite sample size. However, the theoretical reasons for these have not been well investigated yet. In this paper, we propose a new mathematical model about beamforming. In the new model, beamforming is posed as ill-conditioned linear equations. The new...
Minimum variance distortionless response (MVDR) beamformer are known to degrade due to the effects of imprecise knowledge about the steering vector and finite sample size. The diagonal loading method is a simple and efficient method that improves the robustness of beamformers. However, determining an ideal diagonal loading factor (DLF) is not a trivial problem, one that still has not been adequately...
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