What does dsp.SpectrumAnalyzer do under the hood?
3 views (last 30 days)
Show older comments
MAWE on 31 Aug 2022
Commented: Walter Roberson on 31 Aug 2022
I have the below code that displays the spectrum of a signal. However, before ploting this spectrum I want the original frequency-domain signal from which this spectrum is derived. What does the object dsp.SpectrumAnalyzer do exactly to plot the spectrum?
data = 2.*randi([0 1], 1e6, 1)-1;
txFilter = comm.RaisedCosineTransmitFilter;
filteredData = txFilter(data);
rxSignal = awgn(filteredData, 20);
freqAnalyzer = dsp.SpectrumAnalyzer('SampleRate',8e6);
What it does "exactly" is set up a matlabshared.scopes.UnifiedSystemScope() and then update() the scope with the data.
That is hidden inside .p files.
I could have another look to see if I could forgot to "step in" but I am not hopeful.
Find more on Spectral Measurements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!Start Hunting!