FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio communication. The method in the first device for messaging of feedback information to the second device for action on a content of the pre-coding matrix which is used by the second device for pre-coding of information which is transmitted through the channel with multiple inputs and multiple outputs (MIMO) to the first device, and the method comprises the stages during which: a feedback signal is formed which consists of a set of parts representing a matrix structure of pre-coder consisting of a set of parts which is related to the information on state of the channel for the MIMO channel; and to the second device, at least, two different parts of the feedback signal are transmitted which consist of multiple parts with two corresponding various levels of detailing of time and/or frequency transmission.
EFFECT: improvement of orthogonalization of channels at MIMO transmission with keeping of reasonable expenses of service information, especially at pre-coding on the basis of code books.
59 cl, 13 dwg
