Multi-user MIMO signal detection model

The invention provides a multi-user MIMO (Multiple Input Multiple Output) signal detection model, which is used for detecting sending signals of a plurality of user terminals received by a base station, and comprises a data acquisition module used for acquiring a channel matrix between the plurality of user terminals and the base station, a receiving signal of the base station, noise power and a paired Markov random field, the random field comprises graph nodes respectively arranged for each user terminal, and the graph nodes are connected with one another; the initialization module is used for processing according to the channel matrix, the received signal and the noise power by using a neural network, and determining an initial feature vector of each graph node; the graph attention network module is used for processing according to the initial feature vector of each graph node and the initial feature vectors, channel matrixes and noise power of all neighbor graph nodes connected with the graph node by utili