FIELD: radio engineering, communication.
SUBSTANCE: method includes: determining of rank, used for specifying the number of transmission layers; definition of first pre-coding matrix in a variety of codebooks corresponding to the rank; determining the first PMI and the second PMI, used to indicate the first precoding matrix; and sending the first PMI and second PMI (used to indicate the first pre-encoding matrix) to the base station.
EFFECT: improving of system performance by eliminating repetition of precoding matrices after thinning.
40 cl, 18 dwg, 19 tbl
