Patent ID: 8542785
Filing Date: 2013-09-24
Classification: H04B,H04W

Abstract:
1. A communication apparatus comprising: a reception array antenna including N, wherein N is a natural number array antenna elements; a reception-beam forming unit that generates a reception beam signal using a reception signal from each of the array antenna elements according to digital beam formation processing, the reception beam signal forming M reception beams in different beam areas, wherein M is a natural number; and a reception filter bank that generates frequency split reception beam signals obtained by frequency-splitting the reception beam signal, wherein the communication apparatus comprises an interference-source detecting unit that is configured to store, for each reception beam, an interference candidate beam area as a beam area that is estimated based on an initial reception beam characteristic set in advance and the interference candidate beam area interferes with the reception beam, to calculate, based on the frequency split reception beam signals, a reception spectrum for each reception beam, and to calculate, based on the reception spectrum for each reception beam and a reception spectrum of a reception beam directed to the interference candidate beam area, for each combination of the reception beam and a respective frequency allocated to the reception beam, an interference source area as a beam area which is an interference source, and the reception-beam forming unit controls, for each combination of the reception beam and the respective frequency, the reception beam signal to perform null formation in a direction of the interference source area.