METHOD AND DEVICE FOR FEEDING BACK CHANNEL INFORMATION AND ACQUIRING CHANNEL MATRIX

摘要

A method and a device for feeding back channel information and acquiring channel matrix are provided. The method for feeding back channel information includes: the channel matrix of the first link is selected to be regarded as a reference matrix, and said first link consists of a first antenna in the base station side and a second antenna in the terminal side and the spatial propagation channel between them; a ratio of the mismatch parameters for representing the relationship between the channel matrix of the second link and the reference matrix is acquired, and said second link includes: at least one link consisting of the first antenna and at least one antenna excepting the second antenna in the terminal side and the corresponding spatial propagation channel, and at least one link consisting of the second antenna and at least one antenna excepting the first antenna in the base station side and the corresponding spatial propagation channel; the ratio of the reference matrix and the mismatch parameter is fed back to the base station. The embodiment of the present invention can save the overhead for feeding back channel information.