Information feedback method based on the space-time-frequency domain, user equipment, and the base station

摘要

The present invention relates to an information feedback method based on the space-time-frequency domain, information feedback system, the user equipment, and to provide a base station. The user equipment, the quality of a downlink radio transmission in the downlink MIMO system is measured and evaluated, rank downlink radio transmission, precoding matrix index, information such as channel quality indicator is obtained, the spatial domain, frequency domain , and it utilizes the channel selection characteristic in the time domain, spatial, frequency, and in each region of the time, and processes the information on the downlink radio transmission, and using a feedback method, down through the uplink It transmits information about the link to the base station. The base station optimizes a transmitter based on information fed back from the user apparatus.