METHOD OF FEEDING BACK CHANNEL INFORMATION AND RECEIVER FOR FEEDING BACK CHANNEL INFORMATION

摘要

A receiving device and a channel information feedback method for feeding back the channel information are provided to feed back channel information effectively in case that the receiving device such as a user terminal limits capacity used for feeding back channel information. A channel vector measuring unit(610) measures channel vectors corresponding to a plurality of receiving-antennas and receives a plurality of data streams. A candidate codebook vector selecting unit(620) selects candidate codebook vectors more than two of codebook vectors included in the code book and candidate codebook vectors in consideration of the quantization error based on the channel vector about a plurality of data streams.