Performance Evaluation of MIMO Channel Capacity Based on Polarization Loss Factor

This article will discuss the performance of MIMO channel capacity due to polarization mismatch in the receiver. The polarization of the electromagnetic wave sent by the transmitting antenna will change on the wireless channel, which is called depolarization. When the electromagnetic wave reaches the receiving antenna, the polarization does not match the antenna’s polarization, resulting in a polarization loss factor. The polarization loss factor will reduce the received power level. It will also affect the channel capacity of the system. In MIMO antennas, the depolarization effect does not only occur in one element or one channel. This significantly reduces the received power based on the number of MIMO elements. The more antenna elements, the more the polarization loss factor affects the system’s channel capacity. Therefore, it is necessary to know the effect of the polarization loss factor on the received power intensity at the receiver and the ability of the MIMO channel.