[Naazira BadarParticipant]

Hi Damian..

Good job. !

Cheers!
Naazira Badar

[Naazira BadarParticipant]

Hi all,,
Both are optical and wireless communication. And Yes. FSO is a subset of OWC.
However, the application areas seem to differ.

In FSO, The main source of penalty is the atmospheric attenuation. However, OWC can be used for large distances where the atmospheric attenuation is not the major source of penalties, but the pointing angle is. e.g. satellite communications.

I am posting alink. you could go through this. :http://staging.optiwave.com/resources/applications-resources/optical-system-free-space-optics-fso/

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Laksmi Juwita
As rightly mentioned afore, there is no limit to the number of iterations. Your simulation has halted and run out because of the most probable reason of your system memory constraint. your PC system memory does not suffice the large number of simulations you have set in iteration. Also, the number of components could also be large and hence even more memory is required.

you could divide your iteration number such that each set runs successfully or else you could simulate on a system with a higher memory.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Burhan num mina llah

Well yeah, All the best for you research endeavours. Ofcourse, this a platform for discussions.

.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Marvi Grover

Well a number of discussions have already been held on to how this is supposed to be done.
you need to add a MATLAB component to your layout. Turn off intensity scintillation in FSO channel. Load your MATLAB component by program of the corresponding fading model you want to employ. You would need to mention the path of your program in MATLAB component as well.

i am posting link to a beneficial post. Here it goes : http://staging.optiwave.com/forums/topic/log-normal-channel-in-fso

Regards
Naazira Badar

[Naazira BadarParticipant]

Hi AABid baba..

thanks a lot for your suggestion. I appreciate the efforts. But i am afraid that might not be the solution. anyway, i have put this task on hold. once resolved, i would like to share.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Hamza Ali Abbas Khan

Thanks for posting the links. i had already gone through these.
But my problem was not solved.

Thanks for you efforts.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Hamza Ali Abbas Khan..

Thank you for your replies.

Yes, the theoretical aspect is clear. All i was asking was if in optisystem , the thresholding was based on fixed-bias method.

Thanks anyway for your efforts.

Best Wishes

Naazira Badar

[Naazira BadarParticipant]

Hi Burhan num mina llah and Hamza Ali Abbas Khan..

thankyou for replying yet again.

My query revolved the basic idea that in homodyne receivers, low pass filters are responsible for noise reduction and pulse shaping.
However, in heteroyune receiver circuits, low pass filters are responsible for suppression of unwanted demodulation products.

Here is the reference link : https://books.google.co.in/books?id=iUld6xblvo0C&pg=PA363&lpg=PA363&dq=difference+in+uses+of+lpf+in+heterodyne+and+homodyne+filters&source=bl&ots=j7gsxfR6wW&sig=UDAJYsIsonhEyGgQMCQ96KemP50&hl=en&sa=X&ved=0ahUKEwju49LrqM_MAhVLGo4KHQTxBXcQ6AEIOTAE#v=onepage&q=difference%20in%20uses%20of%20lpf%20in%20heterodyne%20and%20homodyne%20filters&f=false

I hope i am clear.

best wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Burhan num mina llah..

you are welcome. are you trying to do cost analysis of any product or design?
Surely, before even asking for funding, one needs to be aware of the cost budget of the system.
If budget exceeds the available financial assistance, one could face hick ups. All the best.

Best Wishes

Naazira Badar

[Naazira BadarParticipant]

Hello Umer Ashraf Wani.

You could use 10 Ghz as well. we have had a number of discussion over wdm MUX bandwidth over here but a conclusive statement could not be reached as to should the BW of WDM-MUX be n x10Ghz , where n is the no. of channels.

Links to few relevant discussions: http://staging.optiwave.com/forums/topic/bandwidth-parameter-for-each-component/
http://staging.optiwave.com/forums/topic/dwdm-system/

About channel spacing, i believe you need to just change the wavelength to modify the channel spacing, or is it something else that you are asking?

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Alistu..

Thanks for your suggestion. I’ll look into it.

Best Wishes.

[Naazira BadarParticipant]

Hi Rajguru M. Mohan..
you have put in a lot of effort explaining OOK.

Thanks alot for that.

Aabid baba, i was asking this for the same reason of errors due to fixed thresholding vis-a-vis signal detection and error.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi all..
Thanks a lot
.. for all your replies.

Actually in homodyne and heterodyne optical receivers, the purpose of low pass filters is different.
Discussing that was the motive of my query.

Best Wishes
Naazira Badar

[Naazira BadarParticipant]

Hi Manoj kumar and Mohan..

thanks a lot for your responses.
yes, definitely Software Defined Networking would be quite an attractive deal in coming years , given its applications and impact.

Best Wishes
Naazira Badar