Apparatus and method for eliminating inter cell interference in multiple input multiple output wireless communication system

A device for a user equipment to eliminate inter-cell interference in a multiple input multiple output (MIMO) wireless communication system, the device comprising:

• an optimum band determining unit, within the user equipment, configured to:
• identify bands not requested to be restricted from a neighboring cell, and
• determine one or more optimum bands among the identified bands according to a first period for updating the one or more optimum bands;
• a request set determining unit, within the user equipment, configured to determine band and precoding matrix index (PMI) to be requested to be restricted to the neighboring cell among the determined one or more optimum bands according to a second period for updating the band and the PMI;
• and
• a feedback transmitter, within the user equipment, configured to transmit feedback information comprising the band and PMI to be requested to be restricted to the neighboring cell to a serving base station,
• wherein a length of the second period for updating the band and the PMI is smaller than a length of the first period for updating the one or more optimum bands.