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| From: | mahongroo |
| Subject: | [Discuss-gnuradio] help |
| Date: | Sun, 20 Sep 2015 17:30:35 +0800 |
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Today's Topics:
1. Re: Fwd: Re: Transmission error (Michael Dickens)
2. Re: Fwd: Re: Transmission error (Rama V)
3. ofdm demod could not demodulate (gnoob16)
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Message: 1
Date: Fri, 18 Sep 2015 13:40:53 -0400
From: Michael Dickens <address@hidden>
To: Rama V <address@hidden>
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] Fwd: Re: Transmission error
Message-ID:
<address@hidden>
Content-Type: text/plain; charset="iso-8859-1"
Hi Dave - I'm thinking that you are confusing "--samples-per-symbol" for
the sample rate. I think the option you're looking for is "-r". Look at
the "--help" for those examples when you get a chance. - MLD
On Thu, Sep 17, 2015, at 02:01 PM, Rama V wrote:
> Thank you very much Michael. I will follow up on your advice. I am
> sorry that I wasn't able to understand some parts in GNU RADIO and
> didn't specify enough information.? Regarding the question, I have
> been doing the benchmark in the digital/ narrowband/ folder. The exact
> commands I have been working on are
> Sender: benchmark_tx.py -f 2.435G --tx-gain 25 --samples-per-
> symbol 250000
> Receiver: benchmark_rx.py -f 2.435G
> When I give 250kS/s, my laptop freezes. USRP is XCVR2450. So I started
> to give less Samples like 50kS/s so that they communicate with each
> other without errors. But I couldn't figure out the solution to that.
> So I just have a doubt whether I need to modify benchmark scripts or
> is it enough for the parameters I give in the command line. Thanks for
> the help. Please advice
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Message: 2
Date: Fri, 18 Sep 2015 14:21:43 -0500
From: Rama V <address@hidden>
To: Michael Dickens <address@hidden>
Cc: "address@hidden" <address@hidden>
Subject: Re: [Discuss-gnuradio] Fwd: Re: Transmission error
Message-ID:
<address@hidden>
Content-Type: text/plain; charset="utf-8"
Thanks for the reply Michael. I will look into that as you have advised. So
all you say is I need to change and play with the sampling rates and
--tx-amplitude until the received packet becomes 'n_rcvd=1' and CRC check
changes to 'ok=true' from the narrowband folder?
Regards,
Dave
On Fri, Sep 18, 2015 at 12:40 PM, Michael Dickens <address@hidden
> wrote:
> Hi Dave - I'm thinking that you are confusing "--samples-per-symbol" for
> the sample rate. I think the option you're looking for is "-r". Look at the
> "--help" for those examples when you get a chance. - MLD
>
> On Thu, Sep 17, 2015, at 02:01 PM, Rama V wrote:
>
> Thank you very much Michael. I will follow up on your advice. I am sorry
> that I wasn't able to understand some parts in GNU RADIO and didn't specify
> enough information. Regarding the question, I have been doing the
> benchmark in the digital/ narrowband/ folder. The exact commands I have
> been working on are
>
> Sender: benchmark_tx.py -f 2.435G --tx-gain 25 --samples-per-symbol 250000
>
> Receiver: benchmark_rx.py -f 2.435G
>
> When I give 250kS/s, my laptop freezes. USRP is XCVR2450. So I started to
> give less Samples like 50kS/s so that they communicate with each other
> without errors. But I couldn't figure out the solution to that. So I just
> have a doubt whether I need to modify benchmark scripts or is it enough for
> the parameters I give in the command line. Thanks for the help. Please
> advice
>
>
>
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Message: 3
Date: Sat, 19 Sep 2015 02:26:56 -0700 (MST)
From: gnoob16 <address@hidden>
To: address@hidden
Subject: [Discuss-gnuradio] ofdm demod could not demodulate
Message-ID: <address@hidden>
Content-Type: text/plain; charset=us-ascii
<http://gnuradio.4.n7.nabble.com/file/n56156/transmit.png>;
hi this is my ofdm transmitter... the thing here is that the ofdm signal
could not get demodulated at all... the qt frequency sink displays nothing
when connected after the ofdm demodulator...
im using zedboard with the adi fmcomms...
thanks!
--
View this message in context: http://gnuradio.4.n7.nabble.com/ofdm-demod-could-not-demodulate-tp56156.html
Sent from the GnuRadio mailing list archive at Nabble.com.
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