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Chapter 9: Hub Site
Synchronization
9.1 Scope of this Chapter
This chapter describes what is hub site synchronization, why it is needed, and an overview of
the various ways it is implemented in a RADWIN radio system.
9.2 What is Hub Site Synchronization (HSS)?
When several radio units are co‐located at a common site, interference may occur from one
unit to another. This interference, if it occurs, happens when at a given moment in time one
unit is transmitting, but the other is receiving: the receiving unit may detect the transmitting
signals of its immediate neighbor instead of (or in addition to) signals from where it should.
Figure
9‐1 illustrates interference caused by non‐synchronized co‐located units: If Unit1 is
receiving at a given moment from Unit1A, and at that same moment Unit2 is transmitting to
Unit2A, Unit1 might receive signals directly from Unit2.
RADWIN 2000+ Series User Manual
Release 4.2.40
9‐1
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