It is well known the OFDM systems suffer from PAPR given that the OFDM symbol is a combination of all of the subcarriers. Subcarrier voltages can add in-phase at some points within the symbol, resulting in very high instantaneous peak power—much higher than the average power.
I was thinking to myself which parts of a receiver communication system does the PAPR affect? For example does it affect the ADC, the LNA?
Here is my thinking: it should be the ADC, since it may drive out of the dynamic range of the ADC.. Does it also affect the LNA? I am not sure.
Another thing I was thinking of PAPR may affect the PA of the transmit side driving it beyond its linear range and operating in the saturation region. So here is my question, how does the transmitter know how much it should back off?