A method for receiving channel state information (CSI) feedback by a base station supporting multiple transmit antennas from a mobile station; the base station therefore; a method for transmitting CSI feedback by a mobile station to a base station supporting multiple transmit antennas; and the mobile station therefore are discussed. The method for receiving CSI feedback by a base station includes according to one embodiment configuring, by the base station via radio resource control (RRC) signaling, one or more channel state information-reference signal (CSI-RS) configurations and one or more null resource element (RE) configurations; transmitting CSI-RSs; and receiving the CSI feedback measured based on the CSI-RSs and the one or more null RE configurations. The one or more CSI-RS configurations are used for a channel quality measurement of the CSI feedback. The one or more null RE configurations are used for an interference measurement of the CSI feedback.