I have a vector signal analyzer which is measuring an OFDM signal with a bandwidth of 20MHz.
The spectrum shows "Power Spectral Density [dBm/RBW per 100kHz]" on the Y-axis. The RBW is set for 100kHz. The average power (in time domain) is measured to be 10dBm.
I am trying to understand how to convert the PSD value to average power.
*I have added a few pictures to show my measurement. The first two are from the power spectral density of the 20Mhz signal being measured. The third image show information about the signal, including the average time domain power (sqrt(I^2 + Q^2))