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Robust beamforming using a narrowband partially adaptive array

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2 Author(s)
Yang, H. ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Ingram, M.A.

Partial adaptivity speeds convergence and decreases complexity of adaptive interference cancellers, especially designs that use a fixed rank-reducing transformation. The best-performing fixed transformation exploits knowledge of the array response and assumes a given pointing direction. We consider the effects of random complex array errors on the performance of such a fixed transformation. The noise injection and iterative projection methods, used together, make the power space (PS) transformation insensitive to array errors; used singly, performance suffers, and with neither, PS fails unless the weight number matches the interference dimension. Narrowband PS designs are shown to be steerable using conventional steering vectors.

Published in:

Statistical Signal and Array Processing, 1998. Proceedings., Ninth IEEE SP Workshop on

Date of Conference:

14-16 Sept. 1998