Patent ID: 7043275
Filing Date: 2006-05-09
Classification: H04B

Abstract:
1. A radio communication apparatus comprising: a plurality of directional antennas; a delay profile estimation section configured to estimate a delay profile representing arrival times of a desired wave and delay waves and received powers for each of received signals from said antennas; an arrival angle range estimation section configured to estimate an arrival angle range of said desired wave from the delay profiles of the received signals estimated by said delay profile estimation section; a transmission antenna selection section configured to select at least one of the antennas which is to be used for transmission, on the basis of the arrival angle range estimated by said arrival angle range estimation section; a transmission section configured to transmit transmission signals using said at least one antenna selected by said transmission antenna selection section; and a reception antenna selection section configured to select at least one of the antennas which is to be used for reception, on the basis of the arrival angle range estimated by said arrival angle range estimation section.