Radwin 5000 HPMP, Руководство пользователя

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RADWIN 5000 HPMP User Manual Release 3.5.70 E ‐ 4
Considerations for Changing Antenna Parameters
Considerations for Changing Antenna
Parameters
Let:
max Available Tx Power denote the maximum Tx Power practically available from an ODU. (It
appears as Tx Power per Radio .)
maxRegEIRP denote the maximum EIRP available by regulation. It will be determined by
three factors:
• per band/regulation
• per channel bandwidth
• antenna gain
maxRegTxPower denote the maximum regulatory Tx Power for the equipment, also having
regard the above three points.
Then, the following relationship must be satisfied:
... (*)
The Tx Power (per radio) indicates the power of each radio inside the ODU and is used for Link
Budget Calculations. The Tx Power (System) shows the total transmission power of the ODU
and is used to calculate the EIRP according to regulations.
Dual 64QAM 3/4 117 243
Dual 64QAM 5/6 130 270
Notes
• To see the relationship between Tx Power (radio) and Tx Power (sys ‐
tem), note that so that if you double
the power in milliWatts (for two radios) then dBm will increase by
.
• The Max EIRP level will be automatically set according to the
selected band and regulation.
• The EIRP level is the sum of the System Tx Power and the Antenna
Gain minus the Cable Loss.
• The Max EIRP level will be automatically set according to the
selected band and regulation.
• The EIRP level is the sum of the System Tx Power and the Antenna
Gain minus the Cable Loss.
Table E ‐ 2: RADWIN 5000 HPMP Air rates (Continued)
Antenna Modulation FEC
Air ‐ Rate [Mbps]
20 MHz
CBW
40 MHz
CBW
maxAvailableTxPower min maxRegEIRP
AntennaGain CableLoss maxRegTxPower

+ –
(
)

dBm
10
milliWatt
10
log

=
10 2 3

10
log
