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Re: [Discuss-gnuradio] Decode Frequency Modulated Signal

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Decode Frequency Modulated Signal
Date: Sat, 28 May 2016 22:41:34 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

Hi Gerhard,

if I interpret your interpretation correctly, you assign a 1 to "long period", and a 0 to a "short period"? That would be an FSK inside an FSK; such systems exist (often for things like put data on a readily available FM modulator), but from the picture of your signal it's hard to tell.

What do you know about your signal?

Best regards,

On 28.05.2016 21:21, Gerhard wrote:

I want to decode a signal that slightly varies in Frequency. Therefore I
used "Quadrature Demod" block. After this, its waveform looks like the
appended image "baudline-waveform.jpg". Although it's a bit fuzzy I
already can decode it with my eyes. Have a look at the appended picture

My Questions:
* How do I decode the signal to ones and zeros?
* Is the signal O.K. the way I demodulated it, or is it to fuzzy?

Any help is appreciated!


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