FEEDBACK AND DATA TRANSFER SPEED ADAPTATION FOR MIMO TRANSFER IN DUPLEX COMMUNICATION SYSTEM WITH TIME DIVISION DUPLEX (TDD)

摘要

FIELD: information technologies.;SUBSTANCE: in one structure a transmitter sends the first reference signal into a receiver. The receiver selects a matrix of preliminary coding on the basis of the first reference signal and in compliance with selection criteria. The receiver assesses noise and mutual interference in the receiver and identifies a channel quality indicator (CQI) or information of a modulation and coding scheme (MCS) on the basis of a preliminary coding matrix and assessment of noise and level of mutual interference. The receiver transmits information of CQI or MCS and the second reference signal into a transmitter. The transmitter selects a matrix of preliminary coding on the basis of the second reference signal and in compliance with the same selection criterion used by the receiver. The transmitter than sends a MIMO-transfer into the receiver on the basis of CQI or MCS information received from the receiver, and a preliminary coding matrix selected by the transmitter.;EFFECT: reduced volume of service information.;28 cl, 8 dwg