frequency shift keying FSK
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Information Technology
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#1
31-12-2009, 05:51 PM



.doc   Frequency shift keying FSK.doc (Size: 43 KB / Downloads: 189)
Abstract:
frequency shift keying (FSK) is a method for representing digital data with analog signals by using a change in the frequency of the carrier to represent information. It is thus a type of modulation. FSK with two frequencies, corresponding to the digital values 0 and 1 (see diagram) is the primary method used by low-speed modems.FSK is a low performance type of digital modulation. Binary FSK is a form of constant amplitude angle modulation,
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seminar flower
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#2
07-09-2012, 10:01 AM

FREQUENCY SHIFT KEYING



.pptx   FREQUENCY SHIFT.pptx (Size: 245.96 KB / Downloads: 20)

GENERATION

The common method for generating an FSK signal is to frequency modulate a signal carrier oscillator using the message waveform (continuous FSK).
This type of modulation is similar to analog FM generation, except that the modulating signal m(t) is a binary waveform.

TOOLS REQUIRED

MATLAB SOFTWARE
Mat lab is a high performance language for technical computing
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jimmyhelu
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#3
23-09-2012, 11:40 PM

Thanks for the well-thought out response Mario! It looks like the C++ code is pretty challenging, and the more I think about it, the more I think that just having output from the Netduino might not be too bad. For some reason, the project and implimentation pages about this device all indicate that you should connect it to the digital pins. Since the board isn't an actual modem, but just filters, it makes more sense that it should go to analog pins. On the Netduino side, I just need to break the bytes into bits and output values at the appropriate frequencies. Since the other end is an audio input jack on a phone, it's just analog data carrying the signal.
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jimmyhelu
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#4
23-09-2012, 11:40 PM

Thanks for the well-thought out response Mario! It looks like the C++ code is pretty challenging, and the more I think about it, the more I think that just having output from the Netduino might not be too bad. For some reason, the project and implimentation pages about this device all indicate that you should connect it to the digital pins.
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