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Improvement in the DOA estimation of broadband signals using partially IIR beamformers

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2 Author(s)
Ghavami, M. ; Sony Comput. Sci. Labs. Inc., Tokyo, Japan ; Kohno, R.

An ideal broadband beamformer requires an increased number of taps for each filter, which in turn increases the complexity of the design. It is shown that for angles near the broadside of the antenna the beamforming is more accurate compared to the angles near the endfire, and it is advantageous to use recursive filters combined with a computed number of zeros for angles near the endfire. The proposed method is used for estimating the arrival angle of the incoming signals and displays uniform accuracy for all angles

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Communications, IEEE Transactions on  (Volume:50 ,  Issue: 6 )