As per my understanding, you want to load the I, Q sample data captured in .CSV files into MATLAB and use it to plot a constellation diagram.
1. Text files such as .CSV files can be imported into MATLAB using readtable if you want to bring in the data as a table, or readmatrix if you prefer to import it as a matrix.
You can refer to the following MathWorks documentation links to know more about readtable and readmatrix:
- https://www.mathworks.com/help/matlab/import_export/ways-to-import-text-files.html#:~:text=its%20user%20interface.-,Import%20Data%20as%20Tables,-If%20your%20text
- https://www.mathworks.com/help/matlab/ref/readmatrix.html#d126e1410276:~:text=example-,A%20%3D%20readmatrix(filename),-creates%20an%20array
2. To plot constellation diagram in MATLAB, scatterplot function can be used. Before using scatterplot function, make sure “Communication Toolbox” is installed in MATLAB.
More information about scatterplot is given in this MathWorks documentation:
The code given below gives a basic idea of how it can be done:
I_data = readmatrix('I_data.csv'); % Replace with actual file name
Q_data = readmatrix('Q_data.csv');
% Combine the I and Q data into a complex signal
complex_signal = I_data + 1j * Q_data;
figure;
scatterplot(complex_signal);
Hope this will help you to get started!
