FIELD: information technology.
SUBSTANCE: receiver system selects a precoding matrix which contains weight coefficients for forming eigen-beams for use and provides matrix rank and index values associatively related to the selected matrix in the transmitter system. After receiving the matrix index and rank values, the transmitter system determines whether the matrix associatively related to the matrix index presented by the receiver system can be used. If not, the transmitter system selects another matrix to determine weight coefficients for forming eigen-beams.
EFFECT: possibility of determining the preferred matrix index and rank value.
30 cl, 4 dwg
