BASE STATION AND FEEDBACK INFORMATION CONTROL METHOD IN RADIO COMMUNICATION SYSTEM

摘要

A base station includes: a subset information generation section which selects M precoding matrices from among N precoding matrices and sets the M precoding matrices as a precoding matrix subset; a transmission section which transmits the precoding matrix subset to a radio communication device; and a reception section which receives feedback information from a radio communication device that is generated by the radio communication device, wherein the feedback information includes information about at least one precoding matrix which is selected from the precoding matrix subset based on reception quality at the radio communication device.