DSP Tools

[swain168]

 input signal is cos(2*pi/192)(real component) and sin(2*pi/192)(image component)

Simple time is 3,

Simulink system period is 1s,

Down sampling rate is 3,

FFT bolck is FFT v4_1

Message Edited by swain168 on 07-22-2009 05:55 AM

[swain168]

 The output  of 1024 point FFT

[swain168]

The output of 1024 points IFFT

Could you help me ?

[pjayav]

hi,

     me too having the same problem. Did u got solution for your problem. If so, please share with me

Thanks & regards

selvam

[aarunya]

I am having that problem too.

I have also noticed that my FFT output from Matlab and output from Sysgen do not match properly. 

aarunya 

[syoma]

Can you post your model as MDL file? It is too hard to analyze without knowledge of all block parameters.

[ywu]

If you are asking about IFFT, please take a look at this blog: http://myfpgablog.blogspot.com/2009/11/ifft-in-system-generator.html

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aarunya wrote:

I am having that problem too.

I have also noticed that my FFT output from Matlab and output from Sysgen do not match properly. 

aarunya 

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[aarunya]

thank you syoma. The FFT is solved. but my IFFT is not solved.

I'll look into the blog which Jim is refering to and if i can't solve, I'll get back.

thank you.

[aarunya]

Thank you Jim.

I'll check that

[farshade]

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aarunya wrote:

thank you syoma. The FFT is solved. but my IFFT is not solved.

I'll look into the blog which Jim is refering to and if i can't solve, I'll get back.

thank you.

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Can you please tell me how you solved the mismatching outputs for FFT between MATLAB and SysGen?

I appreciate if you attach the working .mdl file.

Thanks a lot.