ADC FlexWave Prism System Reference Manual page 169

When setting the
observed:
The
DART Reverse Gain
n
DART to the BTS. If you want unity reverse path gain and the losses to the
BTS are 20 dB, then the Reverse Gain should be set to 20 dB.
If you want to match the URH noise floor to the BTS noise floor, then the
n
noise floors for both the URH and the BTS must be known. Use the
Reverse Gain
BTS has a noise floor of -114 dBm/30 kHz and the URH has a single Remote
noise floor of -124 dBm/30kHz, and there is 2 dB of loss from the Host
DART to the BTS, then the Reverse path gain should be set to 12 dB.
Simulcast changes the actual REV gain level by 20log(n) where n = the
n
number of simulcast links. For example, if REV gain is set to 10dB in a 2:1
simulcast configuration, the actual REV gain is only 4dB (10dB - 6dB). If REV
gain is set to 20dB in a 4:1 simulcast, the actual gain is 8dB (20dB - 12dB).
The Noise Floor of the URH goes up of 10*log10(n), where n = simulcast #.
For example, the single node Remote noise floor is -124 dBm/30kHz
(Before any Reverse path gain), then the noise floor for two remotes is -121
dBm, for 4 remotes it is -118 dBm/30kHz and for 8 remotes it is -115 dBm.
Dual PCS uplink splitting causes a 3 dB degradation in the noise figure.
n
26 6 Click and then
Apply
FlexWave Prism Host, Remote and EMS 5.1 System Reference
ADCP-77-073 • Issue 2 • 11/2009
DART Reverse Gain
setting can be used to overcome losses from the Host
to match these to optimize the reverse path. For example, if the
.
Close
Configure the Host DARTs
value, the following rules must be
© 2009 ADC Telecommunications, Inc.
CORNING EX1005, page 169
DART
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