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FSK Equations

derick007

Member
I am trying to derive an equation for an FSK signal in the time domain - see FSKTime

I then want to use Fourier analysis/transforms to find an equation so that I can plot the frequency response - see FSKFreq

I think I am nearly there, but the 2 delta terms and the minus signs in the FSKFreq document are concerning me
 

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gophert

Well-Known Member
Most Helpful Member

popper

New Member
If you are modelling, step or impulse response is the normal way to do it. For real time, slow sweep freq is the proper way.
 

derick007

Member
Having trouble with equation 14 in FSK3.png

Included FSK1 & 2 for reference. Taken from a document entitled Intuitive Guide to Principles of Communication.

Any help would be most welcome.
 

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Tony Stewart

Well-Known Member
Most Helpful Member
Questions, corrections?
Please contact me,
Charan Langton

Email links deleted... Mod!
 
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derick007

Member
Tried sending you an email to email link deleted, but keeps getting rejected.

Will try your website
 
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Tony Stewart

Well-Known Member
Most Helpful Member
I copied it from her public pdf file. Consider my last comment as a cut and paste from the author of my previous link to her pdf file on FSK obviously not my own content or email. It is not private info. She is a public figure https://www.google.com/search?q=Charan+Langton&ie=utf-8&oe=utf-8&client=firefox-b try somewhere else. SHe is a self-employed author and consultant after 20yrs at Loral Aerospace.
 
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