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Partially adaptive beamformer design subject to worst-case performance constraints

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2 Author(s)
Qian, F. ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA ; Van Veen, B.D.

Proposes two methods for designing partially adaptive beamformers that satisfy a performance specification over a set of likely interference scenarios. Both methods choose the adaptation space in a sequential fashion; the dimension is increased one by one until the performance specification is attained. In the multilevel point design method, each dimension of the adaptation space is chosen to give optimum performance at a single interference scenario. The constrained minimization design method chooses each dimension of the adaptation space to exactly satisfy the performance specification at a single interference scenario while approximately minimizing the average interference output power over neighboring scenarios. Simulations indicate that both methods result in better performance than existing methods while using fewer degrees of freedom

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Signal Processing, IEEE Transactions on  (Volume:42 ,  Issue: 5 )