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6-15
D-620003-0-20 Rev J
CONFIDENTIAL
Estimating RF Coverage
Table 6-13 gives the value of the first term of Equation (3) (that is, (20log(4
π
f/c)) for
various frequency bands.
For reference, Tables 6-14 through 6-20 show the distance covered by an antenna for
various in-building environments. The following assumptions were made:
• Path loss Equation (3)
• 6 dBm output per carrier at the RAU output
• 3 dBi antenna gain
• RSSI = –85 dBm (typical for narrowband protocols, but not for spread-spec-
trum protocols)
Table 6-13
Frequency Bands and the Value of the first Term in Equation (3)
Band (MHz)
Mid-Band
Frequency
(MHz)
20log(4
π
f/c)
Uplink
Downlink
800 MHz Cellular
824–849
869–894
859
31.1
800 MHz iDEN
806–824
851–869
837.5
30.9
900 MHz GSM
890–915
935–960
925
31.8
900 MHz EGSM
880–915
925–960
920
31.7
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
a
a. Due to the wide frequency spread between the Uplink and Downlink bands, the mid-band frequency
of the Downlink band was chosen for 1.7/2.1 GHz AWS.
39.0
Table 6-14
Approximate Radiated Distance from Antenna
for 800 MHz Cellular Applications
Environment Type
Distance from Antenna
Meters
Feet
Open Environment
73
241
Moderately Open Environment
63
205
Mildly Dense Environment
55
181
Moderately Dense Environment
47
154
Dense Environment
39
129
