User's Manual

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D-620616-0-20 Rev B CONFIDENTIAL
Estimating RF Coverage
6.5.3 Examples of Design Estimates
Example Design Estimate for an 1900 MHz CDMA Application
1. Design goals:
• PCS (1920 MHz = average of the lowest uplink and the highest downlink fre-
quency in 1900 MHz PCS band)
•CDMA provider
• 8 CDMA carriers in the system
• –85 dBm design goal (to 95% of the building) — the minimum received power
at the wireless device
• Base station with simplex RF connections
2. Power Per Carrier: The tables in Section 6.3, “Maximum Output Power per Car-
rier,” on page 6-4 provide maximum power per carrier information. The 1900
MHz CDMA table indicates that Fusion Wideband can support eight carriers with
a recommended maximum power per carrier of 6.5 dBm. The input power should
be set to the desired output power minus the system gain.
3. Building information:
• 16 floor building with 9,290 sq. meters (100,000 sq. ft.) per floor; total
148,640 sq. meters (1,600,000 sq. ft.).
Table 6-17 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
Table 6-18 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