Robust Adaptive Beamformers Using Diagonal Loading
نویسندگان
چکیده
Diagonal loading imparts Robustness to the adaptive beamformer against signal mismatch due to low sample support. It helps to achieve desired sidelobe level and to improve Signal to Interference plus Noise Ratio (SINR). In this paper, variants of Minimum Variance Distortionless Response-Sample Matrix Inversion (MVDR-SMI) beamformer with diagonal loading are analyzed. A novel hybrid algorithm, MVDR-SMI beamformer with Colored Adaptive Diagonal Loading is also proposed in this paper. The simulation experiments show improvement in directivity and SINR compared to other existing MVDR-SMI beamformers with diagonal loading.
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تاریخ انتشار 2011