DIRECTIONALITY CONTROL SYSTEM, CONTROLLER, COOPERATIVE STATION DEVICE, RECEIVING STATION DEVICE, AND METHOD OF CONTROLLING DIRECTIONALITY

摘要

A directionality control system which is provided with a first receiving station device for receiving an interference signal and a desired signal, a cooperative station device disposed at a place different from that of the first receiving station device and which receives a signal by means of an antenna, and a controller for controlling the directionality of the antenna of the first receiving station device. The controller regards the antenna of the first receiving station device and that of the cooperative station device together as one array antenna and subjects a received signal received by means of the antenna of the first receiving station device and a received signal received by means of the antenna of the cooperative station device to weighted addition to compose a directionality pattern having a null in the incoming direction of the interference signal by the array antenna.