User's Manual

Introduction to HX System System Architecture
MobileAccessHX Installation and Configuration Guide 3
1.1 System Architecture
MobileAccessHX provides a complete solution consisting of HX remote units at the remote
locations and head-end elements that are shared with any existing MA1000/MA2000 system that
is either installed or being installed at the site.
In the downlink, at the head-end, the BTS or BDA signal is conditioned by the RIU, ensuring a
constant RF level. The conditioned signal is then converted by the Base Unit to an optical signal
for transport over single or multi-mode fiber to the HX remote units, which are located at the
remote locations. In the uplink, the process is reversed.
The MobileAccessHX Remote Unit consists of a compact enclosure that houses the RF module
(supporting up to four services), power elements, and the required interfaces. At the remote
end, the optical signal is reconverted to RF, amplified, filtered and distributed over the
broadband antenna infrastructure through a single antenna port.
The HX unit is remotely managed from the SC-450 Controller installed at the head-end. The SC-
450 connection to the HX is indirect – via the (host) Base Unit to which the HX is connected. SC-
450 provides a central point for management of MobileAccessHX, MA2000 and MA1000 systems.
Figure 1-2. System Architecture
MobileAccess
HX
architecture
including existing MA2000 / MA1000,
with a common head-end.