COMMUNICATION SYSTEM AND METHOD, BASE STATION, AND USER TERMINAL

摘要

Provided a method in a mobile communication system comprising a base station adapted to create a precoding matrix for applying to data to be transmitted to a user terminal by using a channel estimate determined from a Reference Signal (RS) transmitted from the user terminal to the base station, the user terminal being adapted to transmit to the base station a Channel State Information (CSI) report. Determining based on the CSI report values of an interference plus noise covariance matrix. Estimating based on this value and a base station created precoding matrix a SINR value which is then used to determine amodulation and coding scheme (MCS) and transmitting the precoded data by using the MCS from the base station to the UEs.