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September 25, 2015 at 3:50 pm
#25287

Thank you for the file. For 4-QAm, you need to set the threshold detector accordingly. And there you go! Please refer to the attached modified osd file.
If you wish to see the eye more like the one in the link you have given, you need to increase the bit rate. For this purpose, I have used non-user-defined PRBS generators as the ones in the OptiSystem sample. Please see my attached modified2 osd file.
Regards
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