Multi-user scheduling method for MIMO (Multiple Input Multiple Output) system based on feedback compensation

The invention discloses a multi-user scheduling method for an MIMO (Multiple Input Multiple Output) system based on feedback compensation. The method mainly solves the problem that in the prior art delayed channel state information is simply utilized for user scheduling to cause reduction of a bit error rate. The method comprises the following implementation steps that 1 a base station sends a training sequence to a user, and the user estimates channel state information according to a received signal and the sent training sequence; 2 the user feeds the channel state information back to the base station through a feedback channel while feeding a coefficient of association between delayed channel state information and real channel state information in the feedback channel; and 3 the base station combines the received delayed channel state information and the coefficient of association between the two pieces of channel state information to a new scheduling coefficient and selects the corresponding user with the maximum scheduling coefficient to access the channel, so that data transmission is realized. According to the method, the better bit error rate performance can be obtained, and the method can be used for multi-user scheduling in the large-scale MIMO system.