Optimal Adaptive Antenna Arrays for Asynchronous Communication Systems

The communication is devoted to investigations initiated by the idea of the goal functions that take into consideration not only the requirements imposed on communication systems but also the conditions under which asynchronous systems operate. The feature of the goal functions is that they ensure keeping at a minimum the decrease of coverage area caused by nulling the antenna pattern in directions of interference sources. Structures of the related processors of adaptive antenna arrays are presented. On the basis of numerous calculations, a comparison of the effectiveness of the different goal functions was carried out and their performance ranking was revealed.