Patent ID: 8064502

Claim:
A wireless communication apparatus, comprising: a plurality of transmit antennas and receive antennas; a transmit branch for each transmit antenna as well as a receive branch for each receive antenna; a calibration processor configured to multiply receive signals in each receive branch by antenna calibration coefficients, in order to correct phase and amplitude imbalances existing among the receive branches; a transmit beamforming matrix estimator configured to estimate a transmit beamforming matrix by using the respective receive signals that were multiplied by the antenna calibration coefficients by the calibration processor; and an estimator configured to estimate the noise power, likelihood information, and channel waveform equalization values for each receive branch or other estimated values, and in addition, to derive a final estimated value that takes the multiplication by correction coefficients into account when averaging the estimated values for each receive branch or when computing a weighted average according to likelihood.