A method for performing wireless communication includes performing a precoding process beforehand on a plurality of symbols at a base station; performing space block coding on the plurality of symbols at the base station after the precoding process; sending signals from a plurality of antennas of the base station; performing space block decoding on the signals received by a plurality of antennas at a mobile station; performing antenna combination and a deprecoding process on the signals at the mobile station after the signals have undergone the space block decoding; and estimating the plurality of symbols at the mobile station from the signals that have undergone the deprecoding process.