FSK Correlation Demodulator

Digital Signal Processing using computers.

FSK Correlation Demodulator

Postby opamp » Thu Dec 08, 2005 5:16 pm

Hello,

I want to demodulate a FSK signal by correlation dedector. But I have n
knowledge how it will be done. Can you show me the way?
opamp
 

Re: FSK Correlation Demodulator

Postby Vladimir Vassilevsky » Thu Dec 08, 2005 5:16 pm

opamp wrote:

Hello,

I want to demodulate a FSK signal by correlation dedector. But I have no
knowledge how it will be done. Can you show me the way?


The best way to demodulate FSK is to pay to someone who knows how do it.
Also I can show you the way to the library.

VLV
Vladimir Vassilevsky
 

Re: FSK Correlation Demodulator

Postby Jerry Avins » Thu Dec 08, 2005 5:16 pm

opamp wrote:
Hello,

I want to demodulate a FSK signal by correlation dedector. But I have no
knowledge how it will be done. Can you show me the way?

I hope someone can, but that one isn't me. I have a question for you,
though. If you know nothing about it, why does it appeal to you?

Jerry
--
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Jerry Avins
 

Re: FSK Correlation Demodulator

Postby Glennaebad » Fri Dec 09, 2005 1:16 am

"opamp" <ozyalcin@yahoo.com> wrote in message
news:saWdnUxjxYaJ1wXenZ2dnUVZ_tKdnZ2d@giganews.com...
Hello,

I want to demodulate a FSK signal by correlation dedector. But I have no
knowledge how it will be done. Can you show me the way?


Use a PLL.

Glen
Glennaebad
 

Re: FSK Correlation Demodulator

Postby opamp » Sat Dec 10, 2005 12:04 am

"opamp" <ozyalcin@yahoo.com> wrote in message
news:saWdnUxjxYaJ1wXenZ2dnUVZ_tKdnZ2d@giganews.com...
Hello,

I want to demodulate a FSK signal by correlation dedector. But I hav
no
knowledge how it will be done. Can you show me the way?


Use a PLL.

Glen




Because I'm trying to do a FSK homework. And this subjects aren't touche
on during lesson. I have to do these ones by searching. I search ever
site, but I couldn't find any information about how the correlatio
dedector is applied in to demodulation in matlab. I asked because o
this...Still,I don't know correlation...If you really know a source abou
this, please share with me...
opamp
 

Re: FSK Correlation Demodulator

Postby Vale_a_pena » Sat Dec 10, 2005 5:16 pm

I can try to help you Opamp.

Even without money :)

When you mix two signals: y1*y2 with y1 FSK signal and y2 a
sinusoid

You obtain a result varying in time (y1*y2)(t)


Correlation is the integral during a period of T of (y1*y2)(t)

e.g if y1 and y2 during T seconds have different frequencies (in general
different phases along time), if the integral is near zero, it can be said
that y1 and y2 are uncorrelated or dissimilar.

"opamp" <ozyalcin@yahoo.com> escreveu na mensagem
news:CLmdnQYCO7WlWgTenZ2dnUVZ_tqdnZ2d@giganews.com...
"opamp" <ozyalcin@yahoo.com> wrote in message
news:saWdnUxjxYaJ1wXenZ2dnUVZ_tKdnZ2d@giganews.com...
Hello,

I want to demodulate a FSK signal by correlation dedector. But I have
no
knowledge how it will be done. Can you show me the way?


Use a PLL.

Glen




Because I'm trying to do a FSK homework. And this subjects aren't touched
on during lesson. I have to do these ones by searching. I search every
site, but I couldn't find any information about how the correlation
dedector is applied in to demodulation in matlab. I asked because of
this...Still,I don't know correlation...If you really know a source about
this, please share with me...
Vale_a_pena
 

Re: FSK Correlation Demodulator

Postby Stan Pawlukiewicz » Mon Dec 12, 2005 5:16 pm

Vale_a_pena wrote:
I can try to help you Opamp.

Even without money :)

When you mix two signals: y1*y2 with y1 FSK signal and y2 a
sinusoid

You obtain a result varying in time (y1*y2)(t)


Correlation is the integral during a period of T of (y1*y2)(t)

This is the zero lag correlation, not correlation. y1 and y2 can be
nearly orthogonal. Orthognal signals are highly correlated.


e.g if y1 and y2 during T seconds have different frequencies (in general
different phases along time), if the integral is near zero, it can be said
that y1 and y2 are uncorrelated or dissimilar.

"opamp" <ozyalcin@yahoo.com> escreveu na mensagem
news:CLmdnQYCO7WlWgTenZ2dnUVZ_tqdnZ2d@giganews.com...

"opamp" <ozyalcin@yahoo.com> wrote in message
news:saWdnUxjxYaJ1wXenZ2dnUVZ_tKdnZ2d@giganews.com...

Hello,

I want to demodulate a FSK signal by correlation dedector. But I have

no

knowledge how it will be done. Can you show me the way?


Use a PLL.

Glen




Because I'm trying to do a FSK homework. And this subjects aren't touched
on during lesson. I have to do these ones by searching. I search every
site, but I couldn't find any information about how the correlation
dedector is applied in to demodulation in matlab. I asked because of
this...Still,I don't know correlation...If you really know a source about
this, please share with me...


Stan Pawlukiewicz
 


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