Effect of Polarization Loss on Channel Capacity

This paper will discuss polarization mismatch, the wave’s polarization transmitted by the transmitting antenna changes within the radio channel. When the radio waves reach the receiving antenna, the polarization does not match the antenna’s polarization. It will reduce the received power level and the system’s channel capacity. This study examined the effect of polarization loss on SISO, SIMO, and MISO channels. This aims to determine how much influence it has on system performance, especially receiving power and channel capacity. Based on the results of measurements and simulations, it was found that the mismatch between the polarization of the incident wave and the polarization of the receiving antenna causes a decrease in the system’s receiving power and channel capacity. When a polarization loss occurs, the received power decreases by approximately 25.14 dBm for linear polarization and 12.69 dBm for circular polarization, and it also reduces channel capacity.