Uplink MU-MIMO system detection method based on quantitative information

The invention discloses an uplink MU-MIMO system detection method based on quantitative information. The method comprises the following steps: 1) a user feeds back channel state information to a base station; the information is quantified in order to reduce the complexity and the feedback overhead; 2) an analog-to-digital converter is taken as a receiver, and a received signal has a quantification error; 3) under the premise of knowing the quantification precision of the analog-to-digital converter and the quantification precision of the channel state information, the receiver maximizes the signal-to-interference ratio of each user by virtue of signal processing, and therefore, multi-user detection can be realized; 4) single-user detection is performed by use of a zero-forcing algorithm; the method takes the influence of actual system quantification on the MU-MIMO receiver into account, and the system performance is improved by use of the signal processing method.