Compensation

[Khadija Omran]

Hi..
How can compensating PS-QPSK Signal ?

[alistu]

Hi Khadija,

If by compensation you mean dispersion compensation, then you can either use electrical dispersion compensation or using dispersion compensating fiber in the system design. If you are interested in more specific information, I suggest you elaborate more on what you exactly want to do.

Regards

[Aabid Baba]

Hi Khadija,
As alistu mentioned, it would be more appropriate if you try to be more specific about the problem.
Regards

[FAYIQA NAQSHBANDI]

Hi Khadija

What is it exactly that you want to compensate in your signal ?

Thanks

[Khadija Omran]

I want to compensate by using DSP ( compensate all Fibre Transmission Impairments )
When increase the fiber length.
I’m using DCF but this compensate only CD.

[alistu]

For this purpose, you can use the DSP component available in OptiSystem. In order to get more information about how to set up and use the component in OptiSystem, I suggest you consider some from many examples available in OptiSystem samples with DSP component being used and ask any specific question you might face.

Regards

[Khadija Omran]

alistu , DSP component in OPTISYSTEM for only QPSK , PM QPSK , QAM
Not available for PS QPSK

[aasif bashir dar]

hi omran,
generally using digital signal processors is only to enhance the compensation in the channel using dispersion compensation fiber.

with regards

[Khadija Omran]

alistu , DSP component in OPTISYSTEM for only QPSK , PM QPSK , QAM
Not available for PS QPSK

[alistu]

Now that you have Matlab program for the DSP component and you want to co-simulate Matlab with OptiSystem, all you need to do is make adjustments to the format of your Matlab codes and use Matlab component to do the co-simulation. For this, I suggest you go through tutorials and files available in OptiSystem samples regarding Matlab co-simulation to learn how to make the necessary changes.

Regards

[Khadija Omran]

I know , I have this DSP components implemented in matlab and I’m understand how linking between optisystem and matlab , but I want knowledge what modified to this DSP code to compensate PS QPSK

[alistu]

Hi Khadija,

Could you please upload your OptiSystem implementation of the PS-QPSK scheme file where Matlab component is to be used along with the related already available Matlab codes if it is possible? Meanwhile I suggest you search in google for formerly started Optiwave forum topics about dispersion compensation using Matlab, even though you may not find what you are exactly looking for.

Regards

[Khadija Omran]

hi aasif , I have DSP Implemented in matlab With PM QPSK designed in optisystem
I want to modified this DSP to make it compensate PS QPSK(implemented in optisystem)

And thanks

[aasif bashir dar]

hi khadija

https://www.osapublishing.org/view_article.cfm?gotourl=https%3A%2F%2Fwww%2Eosapublishing%2Eorg%2FDirectPDFAccess%2F95D53BA6-A072-823B-F75B9D46A19C06A6_320226%2Foe-23-12-16177%2Epdf%3Fda%3D1%26id%3D320226%26seq%3D0%26mobile%3Dno&org=
https://www.researchgate.net/post/How_can_I_simulate_the_PM-QPSK-WDM_system_in_Matlab
http://www.diva-portal.org/smash/get/diva2:463292/FULLTEXT01.pdf

Dispersion compensation using Matlab

http://www.mathworks.com/matlabcentral/answers/86096-dsp-for-dispersion-compensation-by-fft-overlap-add-method
http://arxiv.org/abs/1407.1671

hop ypu might get some help from these links

with regards

[Author]

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