Spectral efficiency of channel for wireless communication systems with MIMO technology

Communication channel model based on the real characteristics of the base station equipment with the MIMO technology and subscriber user equipment is presented in the article. The capacity and accuracy of channel estimation, communication are investigated using MatLab package. The communication channel is modeled by N base station antennas and a subscriber unit antenna. The input data for analysis of the spectral efficiency of the communication channel are levels of distortion of base station equipment and a subscriber unit, the number of antennas at the base station, the correlation coefficient between the neighboring antennas, signal/noise ratio, the duration of the pilot signal, the simulation time and the time step and transmit power. Distortions in the receiving and transmitting equipment are recorded for each antenna using the additive noise power, which it is proportional to the signal power in the antenna. It has been shown that the quality of the equipment affects the maximum achievable spectral efficiency of the channel, but by increasing the number of antennas of the base station equipment requirements for the quality of the base station can be reduced, since the influence of distortion in the base station equipment is reduced to zero.