Patent ID: 6898250

Claim:
A wireless communication system including a plurality of transmitting antennas and a plurality of receiving antennas through which signals are transmitted and received, the wireless communication system comprising: a transmitter that restores a first feedback information from a predetermined feedback signal, weights an information signal with the first feedback information, and converts the weighted information signal to a first radio frequency signal in order to transmit the first radio frequency signal; and a receiver that receives the first radio frequency signal to estimate a state of a channel through which the first radio frequency signal is transmitted, calculates a first weight of a first dimensionality corresponding to a number of the plurality of transmitting antennas from the estimated channel state, approximates the first weight to a second weight having a second dimensionality the second dimensionality being lower than the first dimensionality, to extract a second feedback information, and converts the second feedback information into a second radio frequency signal to send the second radio frequency signal to the transmitter.