I am a total newbie in signal processing. I have been trying to plot on simulink a time/frequency domain noise in PLC (Powerline Communication) modem that matches a real-world research, however, I failed to plot such noise. If anyone knows how to plot:
- In frequency domain: background noise as high as 55dB for the measurement frequency range with the power contained up to 4MHz
- In time domain: Raise up to 45dB above the background noise floor for most of the AC cycle duration
As far as the article shows, it should look like this.
I need to plot a huge dataset, so if anyone could help me understand how to plot such noise, I will be able to plot the rest.
