FEEDBACK METHOD, APPARATUS AND SYSTEM FOR CHANNEL INFORMATION

摘要

Disclosed in the present invention are a feedback method, apparatus and system for feeding back channel information. The method comprises: determining a feedback mode for channel information; feeding back the channel information to a base station in the feedback mode, and the feedback mode for channel information at least includes feeding back the information related to the conversion domain vector S of an original channel vector X. By the present invention, the problem of high overhead for feeding back channel information in related technologies is solved, and a most advisable or an optimal feedback mode can be selected for feeding back channel information according to specific channel characteristics, thus reducing feedback overhead.