The acquisition section 111 outputs the PDSCH muting pattern, CRS multiplexing pattern or PDSCH multiplexing starting position information that is the information for demodulation to the user data demodulation section 113. The measurement section 112 specifies CSI-RS resources into which the CSI-RS is multiplexed on the resource block, and performs channel estimation using the CSI-RS.

The user data demodulation section 113 demodulates the user data received via the transmission/reception section 103. At this point, the user data demodulation section 113 demodulates the user data using the user-specific DM-RS. In the first method to fourth method, the user data demodulation section 113 uses the pattern information (PDSCH muting pattern, CRS multiplexing pattern) from the acquisition section 111, and eliminates the muting resources or CRS multiplexing positions from the target for demodulation processing to demodulate the user data. Further, in the fifth method and sixth method, the user data demodulation section 113 uses the PDSCH multiplexing starting position from the acquisition section 111, and demodulates the user data from the multiplexing starting position.

Thus, in the radio communication system according to the invention, in applying CoMP transmission, the information for demodulation of a data signal in a mobile terminal apparatus is transmitted to the mobile terminal apparatus that performs CoMP reception, the mobile terminal apparatus demodulates the CoMP-received data signal using the information for demodulation, and therefore, particularly in the case of applying JP-CoMP, it is possible to cause the mobile terminal apparatus to correctly demodulate the data signal.

Described next is a radio communication method according to the invention.