Patent ID: 7746948

Claim:
A wireless communication apparatus configured to synthesize signals received from a plurality of antennas to separate the signals into synthesis signals of a plurality of logical channels, the wireless communication apparatus comprising: a first phase corrector configured to correct a phase of a reception signal by estimating an amount of phase correction by a frequency offset of each reception signal from the plurality of antennas; a synthesizer configured to synthesize reception signals after phase correction by the first phase corrector to separate the reception signals into synthesis signals of the plurality of logical channels; and a second phase corrector configured to correct a phase of a synthesis signal by estimating a second amount of phase correction by a residual frequency offset after the phase correction by the first phase corrector based on the synthesis signal synthesized by the synthesizer, wherein in a multicarrier transmission, the second phase corrector determines the second amount of phase correction of each subcarrier by unifying the frequency offset and a phase shift by a timing offset and performs phase correction, and wherein the second phase corrector puts a phase difference indicative of the frequency offset or the timing offset into a vector on an IQ plane, obtains an average value with the magnitude of the vector being a weight, and estimates the second amount of phase correction by the frequency offset or the timing offset.