- This topic has 11 replies, 4 voices, and was last updated 8 years, 6 months ago by
Heitor Galvao.
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March 2, 2015 at 7:32 am #17931
Shahbaz Qureshi
ParticipantI have implemented the simulation of GPON based FTTH and have to find the BER. i was wondering if i should use 3R before BER analyzer or connect BER analyzer with PRBS and NRZ pulse generatorr? which method will give the accurate results? Using 3R might overcome the losses occurred because of fiber?
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March 2, 2015 at 9:52 am #18024
alistu
ParticipantCould you upload your simulation file please?
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March 4, 2015 at 12:25 pm #18264
Ravil
ParticipantHi Shahbaz,
As far as I remember Damian highlighted in one of our forums that its common to use 3R before BER analyzer instead of connecting it with PRBS and NRZ for similar efficiency. Accuracy is a separate question.
Talking about real GPON systems, I don’t think I’ve seen usage of 3R there… EDFA or Raman amplification should be sufficient.
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March 4, 2015 at 12:27 pm #18265
Ravil
ParticipantMay give you more details if I see your simulation scheme…
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March 6, 2015 at 11:00 am #18368
Shahbaz Qureshi
ParticipantHi Ravil,
Thanks for the information i think i have gotten my answer. Another problem is every time i open BER analyzer the results change. Is it because of the signal index option?
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March 7, 2015 at 1:29 pm #18408
Ravil
ParticipantHi Shahbaz,
Do you mean that your results are changing without repeating the experiment? Are you changing the number of sweep iteration at all?
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March 8, 2015 at 5:27 pm #18427
Shahbaz Qureshi
ParticipantNo i am not changing iterations. I am trying to plot a BER curve with received power but i dont seem to get the proper curve. Take a look at simulation attached.
Attachments:
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March 8, 2015 at 7:51 pm #18432
Ravil
ParticipantUnfortunately, I can’t open your file… What version of OptiSystem did you use?
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March 17, 2015 at 8:13 am #18809
Shahbaz Qureshi
ParticipantI have used the OptiSystem 13 version for 64 bit.
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March 18, 2015 at 11:23 am #18845
Ravil
ParticipantHi Shahbaz,
ok, I can’t open it with on mine. Are you able to upload a screen shot of your scheme so I can take a look at it?
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March 18, 2015 at 1:23 pm #18850
Heitor Galvao
Participant-
March 18, 2015 at 1:24 pm #18851
Heitor Galvao
ParticipantLook at this topic can help you
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