Modulation classification dataset creation error
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello everybody.
I have been trying to create a signal dataset with controlled parameters for modulation classification experiments, and for that I found the code on this page easy to understand. Unfortunately, it does not work when I try it.
Up to a certain point, of course, I get no errors. But when I try to run this body of code:
channelInfo = info(channel);
frameStore = helperModClassFrameStore(...
numFramesPerModType*numModulationTypes,spf,modulationTypes);
transDelay = 50;
for modType = 1:numModulationTypes
fprintf('%s - Generating %s frames\n', ...
datestr(toc/86400,'HH:MM:SS'), modulationTypes(modType))
numSymbols = (numFramesPerModType / sps);
dataSrc = getSource(modulationTypes(modType), sps, 2*spf, fs);
modulator = getModulator(modulationTypes(modType), sps, fs);
if contains(char(modulationTypes(modType)), {'B-FM','DSB-AM','SSB-AM'})
% Analog modulation types use a center frequency of 100 MHz
channel.CenterFrequency = 100e6;
else
% Digital modulation types use a center frequency of 900 MHz
channel.CenterFrequency = 900e6;
end
for p=1:numFramesPerModType
% Generate random data
x = dataSrc();
% Modulate
y = modulator(x);
% Pass through independent channels
rxSamples = channel(y);
% Remove transients from the beginning, trim to size, and normalize
frame = helperModClassFrameGenerator(rxSamples, spf, spf, transDelay, sps);
% Add to frame store
add(frameStore, frame, modulationTypes(modType));
end
end
I get the following message:
Let it be noted that I have installed all three necessary toolboxes, and Simulink is running beforehand. I also tried converting the "classes" variable to string instead of categorical, but that did not solve the problem.
Any help will be appreciated. Thank you.
0 commentaires
Réponses (1)
Chidvi Modala
le 30 Août 2019
It seems like helper functions are missing in your code. You can refer to
1 commentaire
Anas Alarabi
le 1 Mar 2020
In the same body of code viewed here I've an error in helperModClassFrameStore function
"Invalid default value for property 'OutputFormat' in class
'helperModClassFrameStore':
Unable to resolve the name FrameStoreOutputFormat.IQAsRows."
Voir également
Catégories
En savoir plus sur Image Data Workflows dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!