User's Manual

Table Of Contents
Introduction CMA-331-AEN Page 29
Draft
1.5.1 MIMO Configurations
MIMO topologies provide more density by using two independent RF paths for the same service, where the independent paths
are implemented by dedicated modules along the path.
MIMO configuration is implemented by routing the two RF bands over dedicated RF paths at both the entry point (in the
Headend Unit) and at the exit point (at the Remote Unit). Note that the Optical Interface Unit is wideband and the services are
combined in a single OIM for routing to the same Remote End Unit. At the Remote End Unit, the services are distributed by two
dedicated modules.
Note: MIMO configuration can also be implemented by two separate Remote End Units.
Figure 1-8. Example of MIMO Configuration
1.5.2 Single Service Group Example
In this example, all four services (A,B,C,D) are routed to all (up to 72) remote locations. In the illustrated topology, a single HEU
conditions the services and feeds them to two OIU systems for conversion to optic signals. Each OIU supports up to 36 RAU
(Remote Access Units).
Figure 1-9. Single Service Group Configuration