Independent null steering by decoupling complex weights

Abstract

In this paper, we propose a structure for independent null steering by decoupling complex weights. It has the advantage of independent steering of (N - 1) nulls for a linear array having N elements and the complex weights are decoupled such that each weight corresponds to a particular null. For this purpose, the position of each zero of the array factor on the unit circle in the complex plane is controlled by the corresponding weight in the structure. It means that if a single jammer changes its position, only a single corresponding complex weight has to be recalculated, which reduces computational complexity. © IEICE 2011.