FIELD: wireless communication equipment.
SUBSTANCE: method for indicating precoder parameters from a wireless communication device to a network node in a wireless communication system. Method comprises: determining at least one rotation multiplier associated with a plurality of orthogonal beams; selecting a subset of beams from a plurality of orthogonal beams; and transmitting to a network node a selected beam subset and at least one rotation multiplier, wherein the selected beam subset and at least one rotation multiplier are part of the precoder parameters. To this end, a wireless communication device is also provided.
EFFECT: providing a codebook for efficient multi-beam transmission, which enables to obtain high performance characteristics of MU-MIMO.
34 cl, 18 dwg
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