A device and method for use in a MIMO wireless communication system are provided. The device used in the MIMO wireless communication system includes a matching unit configured to determine a matching degree of channel estimation information of a communication device to be scheduled with one or more reference vectors included in a reference vector group, where the reference vector group depends on an antenna array configuration of the MIMO wireless communication system; and a channel characteristic determining unit configured to determine correlation information of the one or more reference vectors with the matching degree satisfying a predetermined condition as one or more parameters reflecting channel characteristic(s) associated with the communication device. By applying the device and method according to the disclosure, it is possible to avoid interference among strong-space-correlated users, and thereby improve the efficiency of processing such as scheduling, noise reduction and so on.