Calculation of Propagation Channel Capacity for Wireless Communications Using Uniform Theory of Diffraction in Urban Areas

In recent years, the use of MIMO systems has been increased dramatically in telecommunication systems, because of their important advantages. In the 4GPP systems, the quality of service should be very high to provide video communications everywhere and every time. The MIMO technology can answer to this requirement. The performance of mobile communication systems is much related to the radio channel. Hence, the prediction of propagation characteristics between both antennas is important in wireless networks. In this paper, the radio channel is predicted between the transmitter and receiver by the use of Uniform Theory of Diffraction (UTD) and extract MIMO channel matrix. The UTD method helps that without the need for expensive measurements, the performance of MIMO systems are investigated. Moreover, the channel capacity is calculated using the channel matrix. To validate our proposed model, the simulation results are compared with the experimental data. There are good agreements between the measurements and the result obtained from the proposed model which justifies the theoretical work.