- This topic has 10 replies, 7 voices, and was last updated 9 years ago by
Dr. Dhiman Kakati.
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June 3, 2015 at 1:43 am #21335
Tayyab Mehmood
ParticipantHi, Is there a way to calculate EVM (error vector magnitude) in optisystem 13.0 just like we calculate in VPI photonics?
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June 3, 2015 at 9:06 am #21340
Ashu verma
ParticipantHello TAyyab
welcome to optisystem,you are new to optisystem so i would recommend you to go through optisystem samples and documents.There are many useful examples given by optiwave.Now may you please mention your objective in order to better understand your requirement.In which system you want to check the EVM? There are some discussion already have done on this topic.I have mention the links below and for better understanding of your,please elaborate the work and objectives.Regards
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June 3, 2015 at 12:44 pm #21357
Tayyab Mehmood
ParticipantThanks again respected sir.
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June 4, 2015 at 2:12 am #21366
Alessandro Festa
ParticipantAs suggested by Taryyab, the documentation procided with Optisystem fully explains whate capabilities the software has. As per your question, it is possible to calculate EVM.
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June 4, 2015 at 2:53 am #21368
Tayyab Mehmood
ParticipantThanks, Sir.
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June 4, 2015 at 9:09 am #21391
Ashu verma
ParticipantWelcome Tayyab.Hope you got the right answer to your question.Best of luck
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June 8, 2015 at 11:14 am #21482
Damian Marek
ParticipantYes it is possible. Using the constellation visualizer you can looks at the results in the Project Browser or by right-clicking the component and choosing results. You can find the calculated symbol error rate as well as the error vector magnitude.
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June 8, 2015 at 11:51 am #21486
Ajay Vyas
ParticipantYes you can calculate the EVm or log EVM mentioned is Constellation visualizer. There are two provision for EVM log scale and decimal. We can plot the variation of EVM with respect to length of fiber or laser power. Or but the Power meter at point where calculate the EVM. calculate the Signal power Noise power & get the SNR . The EVM is given by 1/SER^1/2,
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April 5, 2016 at 8:52 am #35632
Dr. Dhiman Kakati
ParticipantHello Tayyab Mehmood,
You can use the decision component to find the EVM of a system. Just go to the component results and tick the EVM and you will be notified about the EVM of the system on next simulation.Regards,
Dhiman -
April 5, 2016 at 2:01 pm #35694
Ranjeet Kumar
ParticipantHi Tayyab Mehmood,
Here i am posting the link in which Damian Marek and Dhiman Kakati sir have discussed about error-vector-magnitude. As we also know Error vector magnitude (EVM) is a measure of modulation quality and error performance in complex wireless systems. Dhiman has discussed relationship between error-vector-magnitude and BER.-
April 6, 2016 at 12:07 am #35775
Dr. Dhiman Kakati
ParticipantHi I have added a new reply on EVM calcilation procedure. Please follow the link provided by Ranjeet in the above comment.
Regards,
Dhiman
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