User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
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14.5
Configuring XPIC (CLI)
Note
:
This option is only relevant for IP-20C and IP-20C-HP units.
This section explains how to configure XPIC and includes the following topics:
•
•
Configuring the Radio Carriers for XPIC (CLI)
•
•
Performing Antenna Alignment for XPIC (CLI)
14.5.1
XPIC Overview (CLI)
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 ensures that both carriers will be operational, after the
failure is cleared.
To configure and enable XPIC, first configure the carriers and then perform
antenna alignment, as described below.
For 2+2 XPIC using an external switch operating in LAG mode, Mate Management
Access enables users to manage both units via in-band management. See
Management Access (IP Forwarding) (CLI)
14.5.2
Configuring the Radio Carriers for XPIC (CLI)
To configure the radio carriers:
1 Configure the carriers on both ends of the link to the desired frequency
channel. Both carriers must be configured to the same frequency channel.
2 Assign XPIC (CCDP operational mode) support-enabled script to both RMCs on
both ends of the link. Each RMC must be assigned the same script. See
Configuring the Radio (MRMC) Script(s) (CLI)
Note:
XPIC support is indicated by an X in the script name. For example,
mdN_A2828X_111_1205 is an XPIC-enabled script.
mdN_A2828N_130_100 is not an XPIC-enabled script. For a list of XPIC
support-enabled scripts, refer to the most recent Release Notes for
FibeAir IP-20 All-Outdoor Products.
3 Create an XPIC group. See
14.5.3
Creating an XPIC Group (CLI)
To create an XPIC group, enter the following commands:
root> radio-groups
radio-groups>
radio-groups> xpic set admin enable