User's Manual Part 1

Estimating RF Coverage
InterReach Fusion Wideband Installation, Operation, and Reference Manual Page 87
D-620616-0-20 Rev H • TECP-77-044 Issue 7 • May 2013 © 2013 TE Connectivity Ltd.
ExampleDesignEstimateforan1900MHzCDMAApplication
1 Designgoals:
• ȋͳͻʹͲα
ͳͻͲͲȌ
• 
• ͺ
• ȂͺͷȋͻͷΨȌǢ

• Ǥ
2 PowerPerCarrier:Dzdz͸ͷ
ǤͳͻͲͲ
͸Ǥͷ
ǤǤ
3 Buildinginformation:
• ͳ͸ͻǡʹͻͲǤȋͳͲͲǡͲͲͲǤǤȌǢͳͶͺǡ͸ͶͲǤ
ȋͳǡ͸ͲͲǡͲͲͲǤǤȌǤ
• ǡǤ
• ǦǡǤ
• ǡͺͲΨʹͲΨǤ
4 LinkBudget:ǡȂͺͷǤ͵
ǦǤǡ
ͻͶǤͷȋ͸ǤͷΪ͵ΪͺͷȌͻͷΨ
ǤItisimportanttonotethatadesigngoalsuchas–85dBmisusuallyderivedtakinginto
accountmultipathfadingandlogǦnormalshadowingcharacteristics.Thus,thisdesigngoalwill
onlybemet“onaverage”over95%oftheareabeingcovered.Atanygivenpoint,afademay
bringthesignallevelunderneaththedesigngoal.
Ǥ
ǡ
Dz
dzͺͻǤ
Table75. ApproximateRadiatedDistancefromAntennafor2.5GHzWiMAXApplications
Facility
Distance from Antenna
Meters Feet
Open Environment 59 194
Moderately Open Environment 47 152
Mildly Dense Environment 41 134
Moderately Dense Environment 35 112
Dense Environment 25 83