Patent ID: 9155096
Filing Date: 2015-10-06
Classification: H04B,H04W

Abstract:
1. A communication apparatus for communicating with a communication partner apparatus, the communication apparatus comprising: a plurality of antennas; a weight processing unit for calculating, based on a signal group, a plurality of transmission weights for performing beam-forming and null-steering concerning transmission directivity of the plurality of antennas, and setting the calculated plurality of transmission weights respectively to a plurality of transmitted signals transmitted respectively by the plurality of antennas, the signal group being formed of a plurality of known signals transmitted by the communication partner apparatus and being received respectively by the plurality of antennas; and a delay amount acquiring unit for obtaining a delay amount of the signal group from the communication partner transmitting the signal group until the plurality of antennas receive the signal group, wherein in the case of setting the plurality of transmission weights calculated based on a first signal group which is the signal group, to the plurality of transmitted signals, when there exists a second signal group, the weight processing unit corrects the plurality of transmission weights using the delay amount concerning the second signal group and sets the corrected plurality of transmission weights to the plurality of transmitted signals, the second signal group being the signal group which is the known signal received by the plurality of antennas after the plurality of antennas receive the first signal group and which is transmitted with a transmission frequency band different from a transmission frequency band of the first signal group.