H/B= log2 (1+ Eb/No * H/B)
H/B=> bit rate/band width(spectral effieciency)
Eb/No=> energy per bit/noise densiny.
SO from obtained Eb/No you can find the required theoretical Rx for QAM.& by adding the extra noise yuo will get the real.
# bit per symbol is constant= Nb=log2(M) = 4bit.
Hello. I am planning to start writing my thesis about m-qam but i really did not find any basic informations about it so i would like you to explain me in easy way the meaning of MQAM systems performance , error probability evaluation, what is the basic information about them,i know something about them i need more simple.