FIELD: radio engineering, communication.
SUBSTANCE: invention relates to wireless communication systems and is intended to improve user equipment (UE) channel state information (CSI) feedback due to that a precoder part of a CSI feedback report contains factorised precoder feedback. In one or more such embodiments, the factorised precoder feedback corresponds to at least two precoder matrices, including a recommended "conversion" precoder matrix and a recommended "tuning" precoder matrix. The recommended conversion precoder matrix restricts the number of channel dimensions considered by the recommended tuning precoder matrix and, in turn, the recommended tuning precoder matrix matches the recommended precoder matrix to an effective channel that is defined in part by said recommended conversion precoder matrix.
EFFECT: improving user equipment channel state information feedback.
42 cl, 7 dwg
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