- This topic has 16 replies, 7 voices, and was last updated 8 years, 4 months ago by
Rajguru M. Mohan.
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March 7, 2016 at 12:18 pm #31758
Tanveer
ParticipantWhen i am trying to analyze the resuts of BER evaluation…….these varies with every reading…
what is the matter?? can yoou please explain???with regards…
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March 7, 2016 at 12:25 pm #31760
Aabid Baba
ParticipantHello tanveer,
It can be because of random seed thing. Well i suggest you to double click on every component you have used in your design especially the active components , you may see a simulation tab namely random , click on that and untick the generate seed option. It will definitely make your results stable. I hope you fing it helpful.
regards -
March 7, 2016 at 12:32 pm #31762
Tanveer
Participantthank you aabid baba…
let me first of all go through it….hope it helps me to get rid of the ambiguity in the results….
regards -
March 7, 2016 at 1:22 pm #31765
Aabid Baba
Participanthi Tanveer,
yeah you try it first and I believe it is the main problem that is causing your results to vary every time you simulate your design. I am telling you this because I had faced same problem initially. I hope it helps you.
Best Regards -
March 7, 2016 at 3:45 pm #31778
Ranjeet Kumar
ParticipantHi Tanveer,
I agree with aabid sir point as he said that it occurs with Random Seed Index. So, first untick that.
I am uploading the picture for your Easiness.-
March 7, 2016 at 10:53 pm #31801
Aabid Baba
ParticipantThanks ranjeet for making it convenient for him to go the tab directly. It would definitely be helpful to him.
Regards
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March 8, 2016 at 7:57 am #31888
Tanveer
Participantthank you both ranjit and aabid baba….
i am done with that…..
the results are now same for every reading…. -
March 8, 2016 at 12:06 pm #31927
Aabid Baba
ParticipantHello,
You are welcome tanveer. It feels good if someone gets his or her problem solved using this forum. You can anytime post your problem or requirement for your system design here and i believe you will definitely get some positive feedback.
Anyways
regards -
March 9, 2016 at 10:18 pm #32165
Tanveer
Participantthank you aaabid baba…
it really feels good when i get my problem addressed in the forum…. i once again thank you for your kind suggestions….-
March 10, 2016 at 9:34 am #32248
Aabid Baba
ParticipantHello tanveer,
You are welcome. The forum is for the same here.Regards
Aabid
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March 10, 2016 at 4:45 am #32215
umer syed
Participanthi all,
really good explanation from all the people, i myself has gone from the fluctuations in the results after every simulations, the reason is same as provided by aabid baba and ranjeet.
with regards
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March 11, 2016 at 1:56 pm #32309
Jojo Mathew
ParticipantHello Abid, I completely agree to your reply”It can be because of random seed thing. Well i suggest you to double click on every component you have used in your design especially the active components , you may see a simulation tab namely random , click on that and untick the generate seed option. It will definitely make your results stable.” This random generation of values is meant for inserting a noisy signal in lossy conditions. Switching the random generation off reals generates the required results.
Thanks for your kind suggestions.
Regards. -
March 14, 2016 at 1:54 pm #32819
Tanveer
Participantthank you all especially aabid baba for his kind suggestions,,,,
with regards
tanveer -
March 15, 2016 at 11:08 am #32879
Aabid Baba
ParticipantHello tanveer,
you are welcome anytime! -
April 11, 2016 at 7:09 am #36206
Manoj Kumar
ParticipantHello Abid,
I completely agree to your reply”It can be because of random seed thing. Well i suggest you to double click on every component you have used in your design especially the active components , you may see a simulation tab namely random , click on that and untick the generate seed option. It will definitely make your results stable.” This random generation of values is meant for inserting a noisy signal in lossy conditions. Switching the random generation off reals generates the required results.
Thanks for your kind suggestions.
Regards. -
April 15, 2016 at 7:27 am #36881
Rajguru M. Mohan
ParticipantHi Tanveer,
If you continuously facing such problems.
Now design the sane networks in new lAYOUT by using the same layout parameters.
Because sometimes, when we use previous layout we didn’t various parameters of layout.
So, i suggest to use new layout.
And check the results at every output port of each components.
Hope it will help you.
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