Multiuser multiple-input multiple-output (MU-MIMO) has been much attracted much attention for improving the spectral efficiency within a limited frequency band. However, it is not possible to communicate with the users that exceed the number of base station (BS) antennas in the MU-MIMO transmission. We have proposed a method by using non orthogonal multiple access (NOMA) and Zero Forcing (ZF) at the BS and Minimum Mean Square Error (MMSE) at user terminals (UTs). Furthermore, user selection algorithm for the proposed system by utilizing channel capacity equation of ZF algorithm has been proposed. By the proposed system, it was shown that the proposed method realizes the transmission with four users with only two antennas at the BS. In this paper, the effectiveness of proposed method is evaluated when considering a large number of multiple users in order to show validity of proposed system in more realistic environment.