A radio equipment separates a signal from a specific terminal among signals from
adaptive array antennas, based on a reception weight vector calculated by a reception
weight vector calculator. A reception response vector calculator draws out a reception
response vector of a propagation path of the signal from the specific terminal.
A correlation operation and Doppler frequency estimating circuit calculates a correlation
value between reception response vectors of corresponding slots of continuous frames,
and estimates a corresponding Doppler frequency based on a correspondence found
in advance. A transmission response vector estimator predicts a transmission response
vector, by performing an extrapolation process in accordance with the estimated
Doppler frequency.