Forum Replies Created

    March 11, 2016 at 12:24 pm #32502
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    Lukas Koritar
    Participant

    Hello Aabid,
    I was trying this example (https://optiwave.com/resources/applications-resources/optical-system-digital-modulation-dpsk/) according files which you’ve attached (DPSK Step xx) and if I run the project, the output behind DPSK sequence decoder is zero (I made screen, I’ve attached screen below). Maybe the same error will be in my 32QAM project that output behind decoder is all zero.
    Regards

    Attachments:

    1. output.png

    March 11, 2016 at 3:27 am #32447
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    Lukas Koritar
    Participant

    Hello Aabid,
    Thank you, I’m grateful to you. It is too many examples 🙂 I will look at it and maybe i will find some mistakes with my project.
    Regards

    March 10, 2016 at 4:15 pm #32347
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    Lukas Koritar
    Participant

    Hello Aabid,
    We have version 14 but I see examples only from old version (12). If it possible upload all files i will be glad. Thank you very much! 🙂
    Regards

    March 10, 2016 at 1:09 pm #32315
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    Lukas Koritar
    Participant

    Hello,
    I’ve looked again and we have examples only in directory Optisystem 12 and in Optisystem 14 isn’t any examples. I’Ve attached screen with qam examples which I have. Are examples in version 14 different or better? It is pity that 8PSK and 16PSK above are coherent detection. Thanks
    Regards

    Attachments:

    1. examples.jpg

    March 10, 2016 at 11:15 am #32281
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    Lukas Koritar
    Participant

    Hello Aabid,
    Thank you for files. I have looked to examples folders but we haven’t this files and I don’t know why. Once again thank you, i will look at it.
    Regards

    March 10, 2016 at 11:08 am #32277
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    Lukas Koritar
    Participant

    Hello Tanveer,
    I have attached osd file again below. Is it working now?
    Regards

    Attachments:
    1. 32QAM_2.osd
    March 10, 2016 at 6:56 am #32236
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    Lukas Koritar
    Participant

    Hello Aabid,
    Do you know where I could find any example such as 8PSK or 16PSK or dot you have any similar project examples? Thanks
    Regards

    March 9, 2016 at 12:10 pm #32102
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    Lukas Koritar
    Participant

    Hello Aabid,
    Thank you. I will try to change some parameters and i hope that the results will be better than now.
    Regards

    March 8, 2016 at 4:49 pm #31957
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    Lukas Koritar
    Participant

    Hello Aabid,
    Thank you very much for your interest to help me. Yes, I need QAM and as well PSK because I’m working with these modulations schemes at laboratory at school and I have to simulate also. Thanks.
    Regards

    March 8, 2016 at 2:57 pm #31953
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    Lukas Koritar
    Participant

    Hi Aabid,
    Yes, I did. I have tried to increase power upto 15mW but still the same. Is good to use BER Test or not? I will be very glad if you are going to check this tomorrow. Thanks.
    Regards

    March 8, 2016 at 1:14 am #31825
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    Lukas Koritar
    Participant

    Hi Aabid,
    I have set power 5mW, FSO distance 1km with 0 dB/km attenuation because we have at university simulation box for create atmospheric effects (lenght 5 m) and I have to try simulation in Optisystem but I have null experience with Optisystem. So I have tried change bit rate and symbol rate but still the same results. Thanks.
    Regards

    February 15, 2016 at 11:13 am #29742
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    Lukas Koritar
    Participant

    Hi Damian,
    Could you to attach examples for 8QAM and 16QAM, please? Now we have Optisystem 14 but examples of modulation scheme I see from Optisystem 12 where are the old examples. I have done 4QAM but now I don’t know how to set up M-ary threshold detectors for higher QAM modulation. If it’s possible, you could send also 8-PSK. Thank you very much..
    Regards