User's Manual

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D-620616-0-20 Rev A CONFIDENTIAL
Estimating RF Coverage
be used to estimate the maximum coverage distance of an antenna connected to an
RAU, for a given frequency and type of in-building environment.
d = 10^((APL - 20log
10
(4πf/c))/PLS) (4)
For reference, Tables 6-7 through 6-8 show the distance covered by an antenna for
various in-building environments. The following assumptions were made:
• Path loss Equation (4)
• 6 dBm output per carrier at the RAU output
• 3 dBi antenna gain
• RSSI design goal = –85 dBm (typical for narrowband protocols, but not for
spread-spectrum protocols)
Table 6-7 Approximate Radiated Distance from Antenna
for 1800 MHz DCS Applications
Facility
Distance from Antenna
Meters Feet
Open Environment 75 246
Moderately Open Environment 58 191
Mildly Dense Environment 50 166
Moderately Dense Environment 42 137
Dense Environment 30 100
Table 6-8 Approximate Radiated Distance from Antenna
for 2.1 GHz UMTS Applications
Facility
Distance from Antenna
Meters Feet
Open Environment 69 226
Moderately Open Environment 54 176
Mildly Dense Environment 47 154
Moderately Dense Environment 39 128
Dense Environment 28 93