A reception apparatus obtains a first channel estimated value from a reference signal of each layer and a known reference signal that are received and multiplies the first channel estimated value by an orthogonal signal sequence in each layer. Subsequently, the reception apparatus synthesizes a signal in each layer and, from the orthogonal signal sequence and the synthesized signal, calculates an adaptive array antenna weight. Next, the reception apparatus carries out antenna synthesis of the data signal and the reference signal by using the above weight for each layer and obtains a second channel estimated value from the reference signal subjected to the synthesis. Then, the reception apparatus carries out MIMO demodulation from a result of the channel estimation for each layer described above.