Introduction - If you have any usage issues, please Google them yourself
For some randomly generated four-band signal, after its QAM modulation, into the additive white Gaussian noise channel transmission, and addition operations have been transferred signal superimposed white noise, simulated additive white Gaussian noise on the signal transmission channel impact in the receiving end of a corresponding signal demodulation, and compared with the original signal bit error rate calculation. Change the error of white noise power, signal to noise ratio and bit error rate mapping curve. And with the same group of other students to compare the performance curve modulation performance of the pros.