Apparatus and method for providing efficient jetforming feedback

摘要

An apparatus for a jet former and a method are provided. The apparatus comprises a first beam-forming matrix device (103) configured to generate a first beam-forming matrix V from a channel H; an equivalence channel device (105) configured to generate an equivalent channel H based on the channel H and the first beamforming matrix V, where k is a number indicating a subcarrier index; a second beamforming matrix device (107) configured to acquire a second beamforming matrix V from the equivalent channel H; and a transmitter (109) configured to transmit the first beamforming matrix V and the second beamforming matrix Vsc.