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Hi Marcus.
Thank you very match for your responses.
1. I use HackRFs, both with latest firmware. I do not receive any
Error-Messages in Debug Console. But, as I exposed smaller
Samplerate in "Osmocom"-Block or used wav-File with larger
Samplerate, streamed "UUU" and "OOO" Symbols in Console an
Transmitter and Receiver side respectively.
2. I meant Mbit/s :-)
3. I used "Trhrottle"-Block because it was so advised in this
topic:https://github.com/gnuradio/gnuradio/issues/1314
4. Yes, i did it in order to compensate Frequency-Offset.
5. Ok, i will try. Thank you!
I hope that my answers will help solve the problem with the use of
existing blocks.
Best regards,
Timur
On 15.12.2017 23:06, Müller, Marcus
(CEL) wrote:
Just a few notes, before I head to bed:
* Which SDR device are you using? From the top of my head, I can't
think of one that supports a 32 kS/s sampling rate. Do you get output
that says "couldn't use sampling rate" or similar?
* In your original question you said you're using "1.25 Mps" (what's
"Mps", by the way?). That clashes with 32 kS/s.
* Never, never, never use "Throttle" in a flow graph with hardware.
Read the output on the console!! GRC **warns** you about that.
* Your receiver is tuned off by 25 kHz. Is that intentional?
* Your transceiver is completely based on deprecated blocks. Don't use
those; use the packet/header mux and demux instead.
Best regards,
Marcus
On Fri, 2017-12-15 at 22:17 +0100, Timur Karychev wrote:
Hi Marcus,
Please find attached Screenshots of (tx/rx) flowgraphs that I used to
transfer the file.
Without Codecs. The sound lasts well for several tens of seconds,
then errors are heard. I'm transmitting the wav file with 8 KHz
Samplerate.
I hope you can help in this matter. Looking forward to receiving your
reply. Thank you.
Timur
On 15.12.2017 17:17, Müller, Marcus (CEL) wrote:
Hi Timur,
there's infinitely many things that can go wrong – this might be a
design mistake, this might be device imperfections, or this might
really just be noise on your wireless channel.
So, without you posting all details about your transmitter/receiver
implementation, this will be pretty impossible to answer!
Looking forward to more info,
Regards,
Marcus
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