[STDS-802-16] Clarification regarding SS power level control
Power level control for the OFDM PHY is defined in section 8.3.9.1:
" For an SS not supporting subchannelization, the transmitter shall
support a monotonic power level control of 30 dB minimum. For an SS
supporting subchannelization, the transmitter shall support a monotonic
power level control of 50 dB minimum. The minimum step size shall be no
more than 1 dB. The relative accuracy of the power control mechanism is
+/-50% of the step size in dB, but no more than 4 dB. As an example, for
a step size of 5 dB the relative accuracy is 2.5 dB. For a BS, the
transmitter shall support a monotonic power level control of 10 dB
minimum."
Looking at the SS (subchannelization) for example, it is possible to go
from Min power to Max power either in 5 steps of 8 dB or in a single step
of 50dB. In the first option the accumulated offset can reach 5*4dB
(20dB) wheras in the second option the tolerance is limited to 4dB.
Does anyone have a more clear interpretation of this text?
Eyal Verbin