User's Manual Part 1

Designing a Fusion Wideband Solution
Page 84 InterReach Fusion Wideband Installation, Operation, and Reference Manual
© 2013 TE Connectivity Ltd D-620616-0-20 Rev H • TECP-77-044 Issue 7 • May 2013
RAUCoverageDistance
Use“Equation1”onpage82and“Equation2—PathLossEquation”onpage83,respectively,to
estimatethedistancefromtheantennatowheretheRFsignaldec
reasestotheminimum
acceptablelevelatthewirelessdevice.
Equation3
Equation2canbesimplifiedtoEquation3,withd
0
settoonemeterandpathlossslope(PLS)
definedas10
n
:
PL(d)=20log
10
(4/c)+PLS·log
10
(d)
Table67givesthevalueofthefirsttermofEquation3(thatis,(20log
10
(4f/c))forvarious
frequencybands.
Table68showsestimatedPLSforvariousenvironmentsthathavedifferent“clu
tter”(thatis,
objectsthatattenuatetheRFsignals
,suchaswalls,partitions,stairwells,equipmentracks,andso
forth).
Table67
. FrequencyBandsandtheValueoftheFirstTerminEquation3
Frequency Band (MHz) Mid-Band
Frequency 
(MHz)
20log10(4/c)
Uplink Downlink
800 MHz SMR 806-824 851-869 838 30.9
850 MHz Cellular 824-849 869-894 859 31.1
1800 MHz DCS 1710-1785 1805-1880 1795 37.5
1900 MHz PCS 1850-1910 1930-1990 1920 38.1
2.1 GHz UMTS 1920–1980 2110–2170 2045 38.7
1.7/2.1 GHz AWS 1710-1755 2110-2155 2132.5* 39.0
2.5 GHz WiMAX 2496-2690 2496-2690 2595 40.7
* Due to the wide frequency spread between the Up
link and Downlink bands,
the mid-band frequency of the Downlink band was chosen for 1.7/2.1 GHz
AWS.
Table68. EstimatedPathLossSlopeforDifferentIn‐BuildingEnvironments
Environment Type Example PLS for 
850/900 MHz
PLS for 
1800/1900/
2100/2500 MHz
Open Environment
very few RF obstructions
Parking Garage, Convention Center 33.7 30.1
Moderately Open Environment
low-to-medium amount of RF obstructions
Warehouse, Airport, Manufacturing 35 32
Mildly Dense Environment
medium-to-high amount of RF obstructio
ns
Retail, Office Space with approximately
80%
cubicles and 20% hard walled offices
36.1 33.1
Moderately Dense Environment
medium-to-high amount of RF obstructio
ns
Office Space with approximately 50% cubicles and
50%
hard walled offices
37.6 34.8
Dense Environment
large amount of RF obstructions
Hospital, Office Space with approximately 20%
cubicles
and 80% hard walled offices
39.4 38.1