Multiple input / multiple-output communication method and teller / output communication system using the same.

The multiple-input multiple-output communication system. Multiple-input multiple-output communication system user (user) terminal to the selected beamforming (beam-forming) vector the first channel quality information, the first CQI reception unit and a data stream, wherein the receiving feedback from the user terminal a (Channel Quality Information, CQI) associated with the (data consider the transmission rank (rank transmission) related to the number of the stream) and includes parts of the second CQI generator for generating a first channel quality information, a second channel quality information correcting. A MIMO channel quality information, CQI, zero-forcing, PU2RC