Method for feedback and receive channel information method, receiver and transmitter thereof in wireless communication system

PURPOSE: A method, a receiver, and a transmitter for reception and feedbacks of channel information in a wireless communication system are provided to send feedback on channel quality indicator (CSI) or precoding matrix index (PMI) information and an average noise plus intercell interference instead of a post signal to interference plus noise ratio (SINR) as a channel state information (CQI). CONSTITUTION: An estimator (250) sends feedback on channel information and CQI information to a transmitter and receives a signal from the transmitter which predicts a post SINR for each of two or more receivers based on the feedback on CQI information when there is a multi-user multiple-input and multiple-output (MU-MIMO) scheduling. A post-decoder decodes the received signal to recover a set of data symbols. The channel information comprises at least one of a channel matrix and two PMIs. [Reference numerals] (130) Layer mapper; (140) Precoder; (145) Scheduler; (250) Estimator; (260) Post-decoder; (AA,BB) Average SINR