Patent ID: 7764931
Filing Date: 2010-07-27
Classification: H04B,H04L,H04W

Abstract:
1. A method of transmitting feedback information representing channel quality in a receiver in a Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system, the method comprising: measuring channel qualities of signals transmitted on a plurality of subbands through a plurality of transmitter antennas by a transmitter; selecting a predetermined number of subbands having highest transmission performance based on the measured channel qualities and preceding information; selecting at least one subband group having a maximum sum rate from among the selected subbands having the highest transmission performance based on precoding information associated with the at least one subband group; and transmitting feedback information to the transmitter, the feedback information including channel quality information about the at least one subband group and the associated preceding information.