A terminal apparatus for use in a wireless communication system capable of performing spatial multiplex communication between a transmitter and the terminal apparatus by means of MIMO (Multiple Input Multiple Output), the terminal apparatus comprising: a first set of reception antennas (212a, 212b) and a second set of reception antennas (212c, 212d), the first set of reception antennas (212a, 212b) are cross-polarized with respect to the second set of reception antennas (212c, 212d); a channel estimation and precoding selection section that is configured to perform channel estimations of propagation path by use of reference signals, wherein the reference signals are received from the transmitter by the first set of reception antennas (212a, 212b) and the second set of reception antennas (212c, 212d), and wherein the reference signals are transmitted to the terminal apparatus from the transmitter with a first set of antennas (210a, 210b) and a second set of antennas (210c, 210d) and the first set of antennas (210a, 210b) are cross-polarized with respect to the second set of antennas (210c, 210d); wherein the channel estimation and precoding selecting section is further configured to select, in accordance with a result of the channel estimations, a first precoding matrix and a second precoding matrix, the first precoding matrix is applied by the transmitter to a signal which is to be transmitted from the first set of antennas (210a, 210b) and the second set of antennas (210c, 210d) of the transmitter, and the second precoding matrix is applied by the transmitter only to a signal which is to be transmitted from the second set of antennas of the transmitter, wherein the selection of the second precoding matrix is performed in order to minimize interference between polarized waves received by the first set of reception antennas (212a, 212b) and polarized waves received by the second set of reception antennas(212c, 212d); and wherein the channel estimation and precoding selecting section is further configured to notify the transmitter of control information including precoding matrix information indicating the first precoding matrix and the second precoding matrix. a first set of reception antennas (212a, 212b) and a second set of reception antennas (212c, 212d), the first set of reception antennas (212a, 212b) are cross-polarized with respect to the second set of reception antennas (212c, 212d); a channel estimation and precoding selection section that is configured to perform channel estimations of propagation path by use of reference signals, wherein the reference signals are received from the transmitter by the first set of reception antennas (212a, 212b) and the second set of reception antennas (212c, 212d), and wherein the reference signals are transmitted to the terminal apparatus from the transmitter with a first set of antennas (210a, 210b) and a second set of antennas (210c, 210d) and the first set of antennas (210a, 210b) are cross-polarized with respect to the second set of antennas (210c, 210d); wherein the channel estimation and precoding selecting section is further configured to select, in accordance with a result of the channel estimations, a first precoding matrix and a second precoding matrix, the first precoding matrix is applied by the transmitter to a signal which is to be transmitted from the first set of antennas (210a, 210b) and the second set of antennas (210c, 210d) of the transmitter, and the second precoding matrix is applied by the transmitter only to a signal which is to be transmitted from the second set of antennas of the transmitter, wherein the selection of the second precoding matrix is performed in order to minimize interference between polarized waves received by the first set of reception antennas (212a, 212b) and polarized waves received by the second set of reception antennas(212c, 212d); and wherein the channel estimation and precoding selecting section is further configured to notify the transmitter of control information including precoding matrix information indicating the first precoding matrix and the second precoding matrix.