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A new optimization technique for adaptive antenna arrays

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2 Author(s)
Ohnishi, K. ; General Electr. Aerosp. Div., Valley Forge, PA, USA ; Milton, R.T.

An adaptive nulling algorithm for adjusting the array weights under the soft constraint of the weight norm being very much less than 1 or equal to 1, based on the measured correlations between the array and element outputs, is described. The algorithm can be regarded as an extension of the constrained least-mean-square algorithm. It is derived from the same concept of signal and noise subspaces defined in the multiple signal classification (MUSIC) algorithm. One of the unique features of the present algorithm is that the number of the iterations required to adapt the array weights to form nulls is exactly equal to the number of interferers

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Antennas and Propagation, IEEE Transactions on  (Volume:41 ,  Issue: 5 )