I'm trying to understand the theory behind QAM, however i cant get my head around how the amplitude of the signal is maintained when it is transmitted across free space.
If a QAM signal at a certain phase and amplitude is broadcast from an antenna, there is going to be attenuation of that signal when it is received at the receivers antenna. Therefore the received signal amplitude will be less, giving a different QAM value??
If a QAM signal at a certain phase and amplitude is broadcast from an antenna, there is going to be attenuation of that signal when it is received at the receivers antenna. Therefore the received signal amplitude will be less, giving a different QAM value??