Title :
A Robust Capon Beamformer with New Uncertainty Constraint on Steering Vector
Author :
Yu, Zhu Liang ; Er, Meng Hwa
Author_Institution :
Center for Signal Process., Nanyang Technol. Univ.
Abstract :
A robust Capon beamformer (RCB) with a new constraint on the uncertainty of nominal array steering vector (ASV) is proposed in this paper. The new constraint is constructed by replacing the nominal ASV with a projected one onto the signal-plus-interference subspace. The proposed RCB achieves higher output signal-to-noise-plus-interference ratio (SINR) compared with the conventional RCBs. Theoretical analysis and simulation results show the effectiveness of the proposed method
Keywords :
array signal processing; interference suppression; nominal array steering vector; robust Capon beamformer; signal-plus-interference subspace; signal-to-noise-plus-interference ratio; uncertainty constraint; Adaptive arrays; Analytical models; Array signal processing; Covariance matrix; Eigenvalues and eigenfunctions; Interference suppression; Robustness; Sensor arrays; Signal to noise ratio; Uncertainty;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661147
