User's Manual

1 Introduction

1.1 About ADC Optical Fiber Repeater (OR)

ADC optical fiber repeater provides Up-link (RVS) and Down-link (FWD) cell

coverage extension. It serves as a sophisticated remote bi-directional

booster, sensing and re-amplifying the RF transmission in FWD (from the

base-station to the mobile users), and in RVS (from the mobile-users to the

base-station), concurrently. Coverage extension results in increasing traffic

through the base station, thus improving utilization of the Base Transceiver

Station (BTS) resources.

The WiMax system is an interactive, environment-sensitive network.

Optimization of this network involves above all - coverage control. Repeaters

in the WIMAX network are therefore highly interactive with the donor cell and

the neighboring cells, and require flexible tuning and control. Their

effectiveness depends highly on these and additional features.

The Repeater Transferred-Noise, as appearing at the input to the shared-

donor Base Station receiver, has a detrimental effect on the cell capacity, as

shown in Figure

1-1.

Figure

1-1 Capacity loss vs. repeater noise

A new added feature enables monitoring and control of each site from the

other site, i.e. the Remote unit can be controlled from the Host unit and vice-

versa.