User's Manual

Version
1.3
Date
November 18, 2016
Page
21/ 61
Title
USER MANUAL
Prepared by
Reviewed by
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©2016 GS Instech Co., Ltd. All rights reserved.
5. System Block Configuration
5.1. Block Diagram
Figure 7. GST-IC-ELITE-1943 Block Diagram Configuration
The repeater improves service in the Sprint Network of CDMA Class 1 & LTE Band 25.
User may select frequency band according to the site peculiarities.
After receiving a weak signal from Donor antenna, the repeater improves and sends securely isolated
signal out to service antenna under lack of isolation between Donor and Service Antenna using
the ICS (Interference-Cancellation-System) engine.
The Repeater is consists of a ICM (Down and up converters with Digital Signal Processing (DSP) module),
Cavity filters and power amplifier. In Downlink Path, a weak RF signal is received from Donor Antenna.
being converted from RF to IF signal, It is transferred to the DSP&ICS block, where after digitalizing by
DA converter, signal is filtered by DSP. After filtering digital signal is converted into analog RF signal
via modulator and then transmitted to amplifier. Desirable signal is amplified and outputted through
Service Antenna. Uplink path works vice versa.