Title :
A new optimization technique for adaptive antenna arrays
Author :
Ohnishi, K. ; Milton, R.T.
Author_Institution :
General Electr. Aerosp. Div., Valley Forge, PA, USA
fDate :
5/1/1993 12:00:00 AM
Abstract :
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
Keywords :
antenna phased arrays; antenna radiation patterns; interference suppression; least squares approximations; optimisation; LMS algorithm; MUSIC algorithm; adaptive antenna arrays; adaptive nulling algorithm; array weights; constrained least-mean-square algorithm; multiple signal classification; optimization technique; Adaptive arrays; Antenna arrays; Constraint optimization; Hardware; Helium; Interference constraints; Least squares approximation; Multiple signal classification; Radio communication; Signal to noise ratio;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
