Patent ID: 11881916
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A precoding method, comprising:
determining a generalized inverse matrix Hm+ of a channel value matrix Hm of K users in an mth iteration in J iteration operations, wherein m=1, 2, . . . , and J, 1≤J≤M−K+1, J is an integer, and M is a quantity of antennas;
selecting, from a set S1m-1 based on Hm+, an antenna index nm and an update coefficient αm corresponding to nm, wherein S1m-1 is a set of columns that are unselected in antenna indexes of the M antennas until an (m−1)th iteration ends;
determining a weight matrix Wm based on Hm+ and αm; and
assigning a row that is in Wm and that corresponds to nm to a row that is in a final weight matrix Wopt and that corresponds to nm, wherein Wopt is to adjust transmit powers of at least J of the M antennas to a preset transmit power P after the J iteration operations end.