Radwin 2000 D+ - Page 120

RADWIN2000D+UserManual Release3.6.00 9‐1
Chapter9:HubSiteSynchronization
9.1WhatisHubSiteSynchronization(HSS)
Whenseveralradiosarecollocatedatacommonhubsite,interferencemayoccurfromone
unittoanother.RADWINODUssupportthecollocationofmorethantwounitsatacentral
site.LikeanyotherRFdeployment,thewirelessoperationishighlydependentonfactors
suchasavailablefrequencies,thephysical spacingbetweenradios,otherthirdparty
interferingradios,andwhetherotherRADWINradiosareinstalled.
9.2RADWINHSS
TheRADWINHSSmethodusescarriespulsessenttoeachODU,whichsynchronizetheir
transmissionwitheachother.Thepulsesynchronizationensuresthattransmissionoccursat
thesametimeforallcollocatedunits.Thisalsoresultsinallofthehubsiteunitsreceiving
dataatthesametime,eliminatingthepossibilityofinterferencethatcouldresultifsome
unitstransmitwhileotherunitsatthesamelocationreceive.
Figure 9‐1illustratesinterferencecausedbynon‐synchronizedcollocatedunits.
Note
HSSdoesnoteliminatetheneedforcarefulRFplanningtoensurethe
designwillworkasplanned.SeeSiteSurveyforinformationoninstallation
sitesurvey.