Results of development of tropospheric communications system

Some limitations of evaluating dual-polarized MIMO channel capacity

“…However, the cross-polarization discrimination (XPD) of the radio wave is not considered to resolve the capacity problem in the previous investigations. For a radio wave transmitted with a given polarization, the ratio of the power received with the expected polarization to the power received with the orthogonal polarization is called cross-polarization discrimination (XPD), which is given by   10 10 log…”

“…However, the resulting bandwidth limitations due to the final isolation by polarization have not been sufficiently studied. In works [4][5][6][7][8][9][10][11][12] attention is paid to the polarization decoupling, however, only if there is a 22 configuration using the MIMO. Studies of the possibility of using an increase in the number of antennas of MIMO systems with polarization-orthogonal antennas have not been sufficiently conducted.…”