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Max-Min Beamforming for Multipath Exploitation.
- Source :
- IEEE Communications Letters; Sep2022, Vol. 26 Issue 9, p2116-2120, 5p
- Publication Year :
- 2022
-
Abstract
- This letter considers the robust spatial-filter design problem for multipath exploitation. The imprecise multipath return results in the output Signal-to-Interference-plus-Noise-Ratio (SINR) performance deterioration of traditional beamformers. We focus on enhancing the worst-case output SINR over the uncertain Direction-Of-Arrival (DOA) sector. To achieve robustness against covariance matrix errors caused by the desired signals contamination, we reconstruct the Interference-Noise Covariance Matrix (INCM) from Sample Covariance Matrix (SCM) based on the proposed residual noise components removal idea. Then, we cast the robust spatial-filter design problem as a max-min optimization problem, aiming at improving the worst-case output SINR. The filter vector is finally obtained via semi-definite relaxation followed by randomization synthesis. Simulation results demonstrate the effectiveness of the proposed algorithm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10897798
- Volume :
- 26
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- IEEE Communications Letters
- Publication Type :
- Academic Journal
- Accession number :
- 159041062
- Full Text :
- https://doi.org/10.1109/LCOMM.2022.3188754