User's Manual

Table Of Contents

Overview Wideband Radio Head

044-05251 Rev A 1-11

Fiber Optic Distribution Networks

Fiber optic networks are setup identically to data networks. WRHs are connected is a star

configuration as illustrated in Figure 1-6. 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 Wave Division Multiplexers (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 1-10 Fiber Optic Star Configuration

Multi-Operator Configurations

Multi-operator systems require the use of Point of Interconnects (POIs), RF Combining

Modules (RCMs) and OCMs as illustrated in Figure 1-7. 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 ARs. Additional information

is provided in the Fiber Optic Equipment Operation and Maintenance Manual.

Figure 1-11 Multi-operator System

BMU WRH

WRH

BTS

erator 1

erator 2

Sector 1

Sector 2

OCM

RCM

POI