Phase Noise Effects on 16-QAM in Simulink
Add a phase noise vector and frequency offset vector to a 16-QAM signal. Display the constellation.
Open the example model.
The model generates random data, applies 16-QAM modulation to the data, and adds phase noise to the signal. The Phase Noise block specifies a spectral mask with phase noise levels of –40 dBc/Hz at 100 Hz and –70 dBc/Hz at 200 Hz.
The constellation diagram shows a reference 16-QAM constellation and the signal samples impaired by phase noise.