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From: | Stephen Andrew |
Subject: | Re: [Discuss-gnuradio] PSK File transfer |
Date: | Wed, 26 Mar 2014 14:44:24 -0500 |
On 03/26/2014 08:32 AM, Stephen Andrew wrote:Do you mean if you put a file sink before the modulator, you get the
> Hello,
>
> I'm trying to do a simple file transfer over PSK, but the text file I
> get on the output is garbled. I've got:
>
> file source -> throttle -> psk(4) mod -> psk(4) demod -> pack K (8) bits
> -> file sink
>
> If I put in a file sink before the modulator, I see the message just fine.
correct message in the file sink after the packer?
PSK Demod is a complete demod chain, it estimates freq. offset, timing
etc. It's probably not converging immediately, and then your signal is
bit-shifted.
M
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