Hi there, Community friends!
This time, I will share with you the cause why the Cross-Polarization Interference Cancellation. Hope you like!
Cross-polarization interference cancellation (XPIC) technology is used with co-channel dual-polarization (CCDP) to double the microwave link capacity over the same channel.
CCDP transmission uses a horizontally polarized wave and a vertically polarized wave on a single channel to transmit two channels of signals. Ideally, for CCDP transmission, there should be no interference between the two orthogonal signals, even though they are of the same frequency. In actual practice, despite the orthogonal nature of the two signals, interference between the signals inevitably occurs due to cross-polarization discrimination (XPD) of the antenna and channel degradation. To eliminate this interference, XPIC technology is used to receive signals horizontally and vertically. The signals in the two directions are then processed and the original signals are recovered from interfered signals. Figure 1 shows the functional block diagram of a scenario where XPIC is used with CCDP.
Figure 1 CCDP channel configuration (with XPIC technology)
That's all, I welcome everyone to leave a message and exchange in the comment area!
