User's Manual

High Power Wideband Radio Head (WRH-V) Overview
044-05251 Rev A 1-7
Fiber Optic Distribution Networks
Fiber optic networks are setup identically to data networks. WRH-Vs are connected in a star configuration as
illustrated in Figure 1-7. In this example, a Base Station Master Unit (BMU) is fed by a BTS via an RF cable. An
Optical Converter Module (OCM) could also be used depending on the system configuration. The BMU or OCM
contain three FONs and provide continuity to the FONs in the four WRHs. By using WDMs and Optical Splitters
(OSPs) in the WRHs, the distribution net can be built up with a combination of star and daisy-chain connections
using double or single fiber.
Figure 1-7 Fiber Optic Star Configuration
Multi-Operator Configurations
Multi-operator systems require the use of Point of Interconnect (POI) units and OCMs as illustrated in Figure
1-8. In this simple example, two operators have two sectors each. Each sector is connected to a POI and then
to a RCM. The RCM is interconnected with an OCM via coaxial cables. The combined DL and UL signals are
converted to optical signals in the OCM and then distributed to the WRHs-V.
Figure 1-8 Multi-operator System
BMU WRH
WRH
WRH
WRH
BTS
RF
Operator 1
Operator 2
Sector 1
Sector 1
Sector 2
Sector 2
OCM
OCM-POI
BTS-POI
BTS-POI
BTS-POI
BTS-POI
OCM-POI