Patent ID: 8428540

Claim:
A communication apparatus that starts communication after scanning a plurality of reception channels and cancels a noise signal caused by a radio wave noise source from a reception signal received in the communication, the communication apparatus comprising: a parameter storing unit that stores parameters for noise cancellation determined in advance for each of the reception channels in a parameter table in association with the reception channels, the parameters being values of I and Q set in advance to optimize noise cancellation in the respective reception channels; a parameter readout unit that reads out values of I and Q corresponding to a reception channel on which reception is about to be started from the parameter table; a first antenna that picks up a reception signal including a noise signal from the radio wave noise source; a second antenna for noise capture that picks up a noise signal from the radio wave noise source; an adjusting unit that adjusts the noise signal picked up by the second antenna using the values of I and Q read out by the parameter readout unit; and a noise canceling unit that cancels a noise from the reception signal picked up by the first antenna using the noise signal adjusted by the adjusting unit.