FIELD: radio engineering, communication.
SUBSTANCE: invention discloses a method of transmitting and receiving uplink signals using an optimised rank 3 codebook. The optimised rank 3 codebook includes 6 precoding matrix groups, each of which has 1 variable having an amplitude of 1. Preferably, the optimised 4Tx rank 3 codebook has 12 precoding matrices, wherein two precoding matrices are selected from each the 6 precoding matrix groups considering chordal distance and the number of precoding matrix.
EFFECT: optimisation of data transmission.
14 cl, 16 dwg
