results evaluation

[Tanveer]

When 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…

[Aabid Baba]

Hello 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

[Tanveer]

thank 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

[Aabid Baba]

hi 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

[Ranjeet Kumar]

Hi 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.

[Aabid Baba]

Thanks ranjeet for making it convenient for him to go the tab directly. It would definitely be helpful to him.
Regards

[Tanveer]

thank you both ranjit and aabid baba….
i am done with that…..
the results are now same for every reading….

[Aabid Baba]

Hello,
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

[Tanveer]

thank 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….

[Aabid Baba]

Hello tanveer,
You are welcome. The forum is for the same here.

Regards
Aabid

[umer syed]

hi 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

[Jojo Mathew]

Hello 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.

[Tanveer]

thank you all especially aabid baba for his kind suggestions,,,,
with regards
tanveer

[Aabid Baba]

Hello tanveer,
you are welcome anytime!

[Manoj Kumar]

Hello 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.

[Rajguru M. Mohan]

Hi 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.

[Author]

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