You can define your own computation in choosing my own in the GUI window. To be able to run your algorithm, you need to edit the file commod.m.
The load and save selection in the file pull-down menu uses a browser file system to help you access your directory (folder) and files.
You can view the help for the functions encode and decode to find the definition of the error-control coding parameters.
You can view the help for the functions dmod and ddemod for the passband modulation/demodulation simulation parameters. You can view the help for the functions dmodce and ddmodce for the baseband modulation/demodulation simulation parameters.
If you don't know how to choose a parameter, leave the parameter entry empty. The example will fill in a default parameter for you.
The computed data is stored in the Current Data storage area. The data comtains SNR, the signal to noise ratio, and bit_err_ratio, the bit error ratio.
Note that after you have dropped the data into the trash can, the data will be deleted from the window. There is no undo.