help 发自网易邮箱手机版 On 2015-09-20 00:00 , [email protected] Wrote:
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Contents of Discuss-gnuradio digest..." 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)
---------------------------------------------------------------------- Message:
1 Date: Fri, 18 Sep 2015 13:40:53 -0400 From: Michael Dickens
<[email protected]> To: Rama V <[email protected]> Cc:
[email protected] Subject: Re: [Discuss-gnuradio] Fwd: Re: Transmission
error Message-ID:
<1442598053.2651508.387507145.0a8a6...@webmail.messagingengine.com>
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 -------------- next part -------------- An HTML
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------------------------------ Message: 2 Date: Fri, 18 Sep 2015 14:21:43
-0500 From: Rama V <[email protected]> To: Michael Dickens
<[email protected]> Cc: "[email protected]"
<[email protected]> Subject: Re: [Discuss-gnuradio] Fwd: Re:
Transmission error Message-ID:
<cah3njp_kx_qhtkmbn4vvvrkoqcxqe2u7ad9+rmnisp1hq_8...@mail.gmail.com>
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
<[email protected] > 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 > > > -------------- next part
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------------------------------ Message: 3 Date: Sat, 19 Sep 2015 02:26:56
-0700 (MST) From: gnoob16 <[email protected]> To:
[email protected] Subject: [Discuss-gnuradio] ofdm demod could not
demodulate Message-ID: <[email protected]> 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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