Alvarion BreezeNET B System Manual page 104

Chapter 4 - Operations
power level in order to support relatively short links and to minimize the
interference with the operation of neighboring systems, or for compliance with
local regulatory requirements.
In some cases the maximum transmit power of the RB should be limited to
ensure compliance with applicable regulations or due to other reasons.
Different power levels may be used for different modulation levels to optimize
performance taking into account the different modulation schemes as well as
possible regulatory restrictions.
4.2.6.2.8.1 Transmit Power
The Transmit Power parameters are defined separately for different modulation
levels. Note that the supported modulation levels depend on the Min modulation
Level and Max Modulation Level defined for the applicable Sub Band.
In the BU, the Transmit Power parameter defines the fixed transmit power level
and is not a part of the ATPC algorithm.
In the RB, The Initial Transmit Power parameter defines the fixed transmit power
level when the ATPC algorithm is disabled. If the ATPC Option is enabled the
value configured for this parameter serves for setting the initial value to be used
by the ATPC algorithm after either power up or loosing synchronization with the
BU.
The minimum value for the Transmit Power Parameters is -10 dBm. (The ATPC
may reduce the actual transmit power of the SU to lower values). The maximum
value of the Transmit Power Parameter depends on several unit properties and
parameters:
The modulation level
The Maximum Allowed Tx Power as defined for the applicable Sub Band.
The Maximum EIRP as defined for the applicable Sub Band, together with the
value of the Antenna Gain. In certain countries the Maximum EIRP of some
equipment types cannot exceed a certain value. In these cases the Transmit
Power cannot exceed the value of (Maximum EIRP – Antenna Gain).
Maximum Tx Power parameter (in RB only)
For information on how to view the Sub Bands supported by the unit and the
supported parameters' values and options, refer to section
The unit calculates the maximum allowed Transmit Power according to the unit
properties and parameters listed above, and displays the allowed range when a
Transmit Power parameter is selected.
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4.2.2.4
BreezeNET B System Manual