system Noise

This topic has 47 replies, 14 voices, and was last updated 8 years, 7 months ago by Ankita Sharma.

Viewing 22 reply threads

Author

Posts
- April 12, 2016 at 4:18 pm #36486
  
  pooja rawat
  Participant
  
  Hello everyone
  
  As you know that any fluctuation in the system function is considered as noise. Does this mean that fluctuation in the results here can be considered as noise. If yes then can anyone tell me what is the way to calculate it?
  
  Thanks
  Regards
- April 13, 2016 at 1:05 am #36510
  
  pooja rawat
  Participant
  
  Still Looking for replies. Any Help Please?
- April 13, 2016 at 2:23 am #36528
  
  Ankita Sharma
  Participant
  
  HI Pooja,
  
  You have very correctly mentioned that any fluctuation in the system function is considered as noise… I will suggest you to go through the link mentioned below..
  
  http://www.svphotonics.com/pub/pub029.pdf
  
  It will surely be of help..
  
  regards
  Ankita
  - April 13, 2016 at 7:43 am #36562
    
    pooja rawat
    Participant
    
    Hello Ankita
    Thanks for your help but i checked the paper you have linked. There is nothing such mentioned. It has generally given the BER and Q-factor calculations pertaining to some variations. Anyways thank you 🙂
    
    Thanks
    Regards
    Pooja
- April 13, 2016 at 3:08 am #36542
  
  Ankita Sharma
  Participant
  
  Hi Rather,
  
  Thanks for agreeing on my point of view..
  All the best..
  
  Regards
  Ankita
  - April 17, 2016 at 7:49 am #37418
    
    pooja rawat
    Participant
    
    Hello Ankita.
    Thank you very much for the concern.
    
    Regards
    Pooja
- April 13, 2016 at 6:30 am #36555
  
  Rajguru M. Mohan
  Participant
  
  Hi Pooja,
  i would suggest you to refer to following links,
  ecause first we should understand various parameters of eye diagram.
  http://www.edn.com/design/test-and-measurement/4389368/Eye-Diagram-Basics-Reading-and-applying-eye-diagrams
  https://www.dit.ie/media/physics/documents/corish.pdf
  http://opticfibrecommunication.blogspot.in/2012/11/eye-diagrams.html
  http://onlinelibrary.wiley.com/doi/10.1002/0471726400.app1/pdf
  
  hope this will help you.
  - April 13, 2016 at 7:48 am #36565
    
    pooja rawat
    Participant
    
    Hello Rajguru
    Thank you for the help. But the links you have posted detail about various noises. I am talking about optisystem only and the result variations here. Can you provide me with a link where noise is mentioned in optisystem. I will be really thankful to you.
    Thanks
    Regards
  - April 14, 2016 at 11:40 pm #36814
    
    nagesh kuknoor
    Participant
    
    Hi Pooja,
    
    The links provided by Rajguru seem to be very helpful for your cause. try going through them. They will be surely of some help.
    
    Thank you
    - April 17, 2016 at 8:08 am #37419
      
      pooja rawat
      Participant
      
      Hello Nagesh.
      Thank you for the response. It indeed was helpful.
      
      Regards
      Pooja
- April 13, 2016 at 7:48 am #36557
  
  deepak jha
  Participant
  
  Hi everyone on the forum,
  
  A very nice discussion by all the forum members..
  
  Thanks and Regards
  Deepak
  - April 17, 2016 at 8:10 am #37420
    
    pooja rawat
    Participant
    
    Hi Deepak.
    Thanks a lot
    
    Regards
    Pooja
- April 13, 2016 at 2:25 pm #36605
  
  Atul Sharma
  Participant
  
  Hello Pooja. Greetings.
  As far as your query is concerned i feel it is a good question you have raised but i would like to tell you that nay variation in the results wont necessarily mean that it is noise. It can be because of some variation or non-linearities in the channel due to which results will vary. I hope this will be helpful but i must agree with you. An interesting query you have put forward.
  
  With regards
  Atul Sharma
  - April 14, 2016 at 11:43 pm #36815
    
    nagesh kuknoor
    Participant
    
    Hi Atul,
    
    You have made a very valid argument. I somehow agree to what you said. Results varying does not imply that it is noise there could be various reasons for it. Anyway thank you.
    
    Regards
  - April 16, 2016 at 4:54 am #37127
    
    jyoti raina
    Spectator
    
    hi pooja mam..
    i agree with atul sir..he is right result variation is not due to noise only..some times random seed is the factor
    
    with regards
    jyoti
  - April 17, 2016 at 8:17 am #37421
    
    pooja rawat
    Participant
    
    Hi Atul.
    Thank you so much for the help. I shall take note of it. I had read somewhere the variation i sdue to noise that is why i asked. Anyway thanks a lot.
    
    Regards
- April 15, 2016 at 12:06 am #36821
  
  shafeen al yasin
  Participant
  
  Hello Pooja,
  
  I agree with Atul. System noise is not the variation of results although if you check the eye diagram analyzer you will find noise column there but it is generally a sampled noise. Hope this is useful.
  
  Regards
  Shafeen
  - April 17, 2016 at 8:20 am #37422
    
    pooja rawat
    Participant
    
    Hi Shafeen.
    Thank you for the suggestion. I shall take note of it. Although i believe any variation may be just because of noise not always though. Anyway thank you so much.
    
    Regards
    Pooja
    - April 17, 2016 at 6:09 pm #37713
      
      shafeen al yasin
      Participant
      
      Hi pooja,
      You are welcome. Hope it has helped you.
      
      Regards
      Shafeen
- April 15, 2016 at 2:20 am #36846
  
  SAHIL SINGH
  Participant
  
  Hello Pooja,
  
  I agree with both Atul and shafeen . System noise is not the variation of results although if you check the eye diagram analyzer you will find noise column there but it is generally a sampled noise.
  
  Regards
  Sahil singh
  - April 17, 2016 at 8:22 am #37423
    
    pooja rawat
    Participant
    
    Hello Sahil.
    Thank you for your concern. I surely will check that. It has been a helpful discussion here.
    
    Regards
    Pooja
- April 15, 2016 at 3:28 am #36852
  
  Ankita Sharma
  Participant
  
  Hi Rajguru,
  
  Thanks for providing the valuable information… Highly appreciate your efforts…
  
  Regards
  Ankita
  - April 17, 2016 at 8:24 am #37424
    
    pooja rawat
    Participant
    
    Hello Ankita.
    Thank you for your concern. I really appreciate that.
    
    Regards
    Pooja
- April 15, 2016 at 6:48 am #36871
  
  Rajguru M. Mohan
  Participant
  
  Hi Pooja,
  Here is the links for different types of noise related to Optisystem
  
  Laser Noise and Linewidth
  
  awgn noise
  
  Receiver Noise—PIN
  
  Extracting the Thermal Noise Parameter for a Specific Receiver Sensitivity
  
  In optisystem library we have Noise source, get its details through Optisystem components library pdf file.
  
  Hope it will help you.
  - April 15, 2016 at 4:48 pm #36943
    
    shafeen al yasin
    Participant
    
    Hi Rajguru,
    Thank you for sharing such links. Really helpful..
    Regards
    Shafeen
    - April 17, 2016 at 8:40 am #37430
      
      pooja rawat
      Participant
      
      Hello Shafeen.
      Yes i agree to that. The links have been very helpful indeed.
      
      Regards
      Pooja
    - April 17, 2016 at 6:11 pm #37714
      
      shafeen al yasin
      Participant
      
      Hello pooja,
      Glad to know that. All the Best.
      
      Regards
      Shafeen
  - April 17, 2016 at 8:27 am #37425
    
    pooja rawat
    Participant
    
    Hello Rajguru.
    Thanks a lot for the links. These really must help. I appreciate your efforts.
    
    Regards
    Pooja
- April 15, 2016 at 10:34 am #36899
  
  nagesh kuknoor
  Participant
  
  Hi Rajguru,
  
  Thank you for sharing these links. The second link is very much related and it discusses different types of noises that can be associated with our system designs.
  
  Regards
  - April 17, 2016 at 8:29 am #37426
    
    pooja rawat
    Participant
    
    Hello Nagesh.
    Thanks for rhe concern you have shown. I appreciate it. I also want to mention that is has been really helpful.
    
    Regards
    Pooja
- April 15, 2016 at 1:28 pm #36928
  
  Domail Singh
  Participant
  
  Hi All,
  I think this is a very valid question. A nice query put forth by pooja.
  I also agree to various points of views put forward by various members.
  Regards
  Domail
  - April 17, 2016 at 8:31 am #37427
    
    pooja rawat
    Participant
    
    Hello Domail.
    Thanks a lot. yes i agree to that.
    
    Regards
    Pooja
- April 15, 2016 at 4:45 pm #36941
  
  Manoj Kumar
  Participant
  
  Hi Rajguru,
  
  Thanks for providing the useful information…
  
  Regards
  - April 17, 2016 at 8:35 am #37428
    
    pooja rawat
    Participant
    
    Hello Manoj,
    You are welcome. I hope this will continue.
    
    Regards
    Pooja
- April 15, 2016 at 6:09 pm #37007
  
  gaurav rajput
  Participant
  
  Hi all,
  
  Thanks Rajguru for sharing the links and providing so much of valuable information…
  
  Regards
  - April 17, 2016 at 8:38 am #37429
    
    pooja rawat
    Participant
    
    Hi Gaurav,
    Thank you for your concern. I appreciate that
    
    Regards
    Pooja
- April 16, 2016 at 8:23 am #37213
  
  Rajguru M. Mohan
  Participant
  
  Hi,
  I agree to Domail singh.
  System Noise is important point in communication field.
  So, it must be discussed in brief.
  system noise contribute to overall perfomance of system.
  
  http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1257814&tag=1
  http://as.wiley.com/WileyCDA/WileyTitle/productCd-0470060611.html
  
  Regards,
  Rajguru
  - April 16, 2016 at 1:12 pm #37224
    
    nagesh kuknoor
    Participant
    
    Hello Rajguru,
    Thanks for sharing the links. I hope these are beneficial to pooja and yes i too agree with domail. Anyway i hope it helps pooja.
    
    Regards.
    - April 17, 2016 at 8:45 am #37432
      
      pooja rawat
      Participant
      
      Hello Nagesh,
      I am really thankful for your concern. I appreciate that and yes the links have been very useful.
      
      Regards
      Pooja
  - April 17, 2016 at 8:42 am #37431
    
    pooja rawat
    Participant
    
    Hello Rajguru.
    Thank you again for the links. But i am not able to download the ieee paper. Can you forward me the pdf?
    I will be really thankful to you.
    
    Regards
    Pooja
- April 17, 2016 at 2:00 pm #37540
  
  Ankita Sharma
  Participant
  
  Hi Pooja,
  
  I will download it for you as I am having the access to IEEE portal and will surely mail it to you.. send me your email i.d through personal text.. Will forward it to you
  
  Regards
  Ankita
- April 17, 2016 at 2:48 pm #37562
  
  deepak jha
  Participant
  
  Hi Pooja,
  
  I suggest you to go through the links provided by Rajguru,they contain a detailed information about the system noise.. Hope it helps..
  
  Regards
- April 17, 2016 at 3:05 pm #37573
  
  Domail Singh
  Participant
  
  Hello Pooja
  I agree with Rajgur. try going through the links rajguru has provided. Those will surely be of some help
  
  Regards
  domail
- April 17, 2016 at 6:00 pm #37705
  
  Rahul Tiwari
  Participant
  
  Hi Pooja,
  
  Go through the links provided by Rajguru.. It will surely be of help…
  
  Regards
  Rahul Tiwari
- April 19, 2016 at 3:19 am #38285
  
  FAYIQA NAQSHBANDI
  Spectator
  
  HELLO POOJA..
  
  I am a bit confused with what you have stated.. As we know noise is inevitable…Any system can’t be noise free ( negligible noise is present in most ideal systems as well).. Now as far as your query is concerned , i would like to share that variation in results may not be just because of noise..There are number of other factors as well like changing launching power, pulse broadening etc.. I hope you understand.
  
  Regards
- April 19, 2016 at 4:10 am #38316
  
  deepak jha
  Participant
  
  Hi Rajguru,
  
  Thanks for the valuable information…
  
  Regards
- April 19, 2016 at 5:48 am #38330
  
  Ankita Sharma
  Participant
  
  Hi all,
  
  Thanks Rajguru for the information…. A very nice discussion indeed…
  
  Regards
  Ankita
- April 13, 2016 at 7:45 am #36563
  
  pooja rawat
  Participant
  
  Hello Rather
  Thank you for your suggestions 🙂
Author

Posts