RADIO RECEPTION APPARATUS AND RADIO RECEPTION METHOD

摘要

When performing weighted addition of a pilot signal and an in−phase sum of a pseudo pilot signal of a data portion for the n−th slot, a channel estimation circuit (104) controls the weighting coefficient according to the number of times the channel estimation is repeated. That is, when the repetition count is small, the pseudo pilot signal is added to the pilot signal so as to reduce the weight of the pseudo pilot signal for performing channel estimation and when the repetition count is large, the pseudo pilot signal is added to the pilot signal so as to increase the weight of the pseudo pilot signal for performing channel estimation. Thus, in the repeated channel estimation, it is possible to increase the accuracy of the channel estimation value in the initial stage and it is possible to perform a highly−accurate channel estimation with a small number of reflective channel estimation repetitions.