Cambium Networks PTP 820 Series, User Manual, Page: 255 / 1149

Chapter 3: Configuration Guide Configuring XPIC
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Configuring XPIC
Cross Polarization Interference Canceller (XPIC) is a feature that enables two radio carriers to use the same
frequency with a polarity separation between them. Since they will never be completely orthogonal, some signal
cancelation is required.
In addition, XPIC includes an automatic recovery mechanism that ensures that if one carrier fails, or a false signal is
received, the mate carrier will not be affected. This mechanism also assures that when the failure is cleared, both
carriers will be operational.
This section includes:
•
Prerequisites for XPIC
•
Configuring the Carriers
•
Creating an XPIC Group
•
Performing Antenna Alignment for XPIC
•
Deleting an XPIC Group
Related topics :
•
Displaying XPI PMs
Prerequisites for XPIC
•
For PTP 820F, XPIC requires a Multicore RFU-D.
•
For PTP 820G, Each radio interface must be connected to the same type of RFU.
•
For PTP 820G, XPIC requires a hardware model with two radio interfaces.
•
Each radio carrier must be assigned the same script. The script must be an XPIC script. The letter X (XPIC) or N
(Non-XPIC) in the script name indicates whether or not the script supports XPIC. For example:
o
The script mdN_A2828X_102_1205 supports XPIC.
o
The script mdN_A2828N_123-1005 does not support XPIC.
Note
For a list of XPIC support-enabled scripts, refer to the most recent PTP 820G Release Notes.
Configuring the Carriers
To configure the radio carriers: