METHOD OF TRANSMTTING SIGNAL IN BASE STATION AND METHOD OF TRANSMITTING FEEDBACK INFORMATION IN TERMINAL

摘要

A method for transmitting signals in a base station and a method for transmitting feedback information in a mobile terminal are provided to decrease the amount of feedback information, transmitted to a base station from a mobile terminal, by previously allocating some precoding matrixes or Tx antennas to each frequency group. A base station segments an allocated frequency band into a plurality of frequency groups. The base station allocates one or more precoding matrixes among a plurality of precoding matrixes to each of the divided frequency groups. The base station receives feedback information from a mobile terminal. The base station transmits signals using the frequency of a frequency group corresponding to the received feedback information and the precoding matrixes allocated to the corresponding frequency group.