Radwin 2000 C PLUS

RADWIN2000CPlusUserManual Release3.5.70 10‐1
Chapter10:
HubSite Synchronization
WhatisHubSiteSynchronization?
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wire lessoperationishighlydependentonfactors
suchasavailablefrequencies,thephysicalspacingbetweenradios,otherinterferingradios,
andwhetherRADWIN2000,RADWIN2000CPlusorRADWIN5000unitsareinstalled.
TheRADWINHubSiteSynchronization(HSS)methodusesacableconnectedfromtheMas ter
ODUtoallcollocatedODUs;thiscable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 10‐1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instal‐
lationsitesurvey.
• HSSsupportforRADWIN2000CPlusHBSsismodeldependent