2018/07/18 by Shi, Xue
#FOS: Electrical engineering #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · doi:10.48550/arxiv.1807.06716
This paper presents a new array response control scheme named complex-coefficient weight vector orthogonal decomposition ( \textrmC2\textrm-WORD ) and its application to pattern synthesis. The proposed \textrmC2\textrm-WORD algorithm is a modified version of the existing WORD approach. We extend WORD by allowing a complex-valued combining coefficient in \textrmC2\textrm-WORD , and find the optimal combining coefficient by maximizing white noise gain (WNG). Our algorithm offers a closed-from expression to precisely control the array response level of a given point starting from an arbitrarily-specified weight vector. In addition, it results less pattern variations on the uncontrolled angles. Elaborate analysis shows that the proposed \textrmC2\textrm-WORD scheme performs at least as good as the state-of-the-art \textrmA^\textrm2\textrmRC or WORD approach. By applying \textrmC2\textrm-WORD successively, we present a flexible and effective approach to pattern synthesis. Numerical examples are provided to demonstrate the flexibility and effectiveness of \textrmC2\textrm-WORD in array response control as well as pattern synthesis.