Alc; Mimo Topology - Axell Wireless MBF-40 Series Product Description And User's Manual

1.2 ALC

The repeater has a constant gain in both uplink and downlink paths. The repeater has a
defined maximum output level. If the input signal amplified by the gain set exceeds the
set output limit, an ALC (Automatic Level Control) loop is activated. This ALC ensures
that the amplifier does not add distortion to the radio signal. Below are examples of the
ALC function for one and two carriers.
Output power, dBm
+36,5
+35
+33,8

1.3 MIMO Topology

MIMO configuration is supported by specific MBF-40 models. The physical casing of
these models supports two antenna ports and includes two (internal) optic conversion
modules (see section 1.7.3.4).
MBF-40 MIMO topology requires an OMU II unit that supports at least two sectors. Two
dedicated optic Fibers are routed from the OMU II towards the MBF-40.
Where relevant, MIMO specific installation instructions are provided in the manual.
© Axell Wireless Ltd
-24 -16
Figure 1-2: ALC
Figure 1-3: MIMO OMU II-MBF-40 Remote Application
Doc. No. 00071UM Rev. 3.2
AXELL MBF-40 AMERICAS REPEATER
PRODUCT DESCRIPTION AND USER'S MANUAL
ALC one carrier
ALC two carriers
Gain: 60 dB
Input signal, dBm
3