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 Regards, Dave On Sep 17, 2015 9:09 AM, "Michael Dickens" <michael.dick...@ettus.com> wrote: > Hi Rama/Dave - The benchmark examples run as standalone applications. They > do require Python, but they do not use GRC or any other GUI interface. > > Question: Are you running the OFDM or Digital/Narrowband benchmark? What > exact commands are you using for both Rx and Tx? What SDR hardware are you > using? You might have covered these items already in prior emails, but > since this was a new query it's always good to be precise -- of course also > trying to keep your query concise. > > Please reply to this whole list, not just to me. In this manner, others > can join in if they so choose. > > Given the lack of response to your original and even follow-up query, I > have some advice to pass on: > > (1) play around with these GNU Radio-based applications; see what they can > do on your system; start with low sample rates & work your way up. > > (2) Do not expect instantaneous replies to your queries; those of us > providing any form of support juggle many things & we will get back to you > sooner or later. 24 hours is a reasonable timeframe to expect a reply, not > 1 hour or even 5 hours. > > (3) Do your homework as to the questions you ask. The more informed and > precise your questions, the better we can answer them. > > I hope the above helps. - MLD > > On Wed, Sep 16, 2015, at 06:17 PM, Rama V wrote: > > Do I need to use gnuradio - companion for transmission and reception of > the data packets or the benchmark_tx.py commands from the terminal would be > enough for that to happen. I am unable to sort out. Kindly help. > > Regards, > Dave > On Sep 16, 2015 2:59 PM, "Rama V" <ramav...@gmail.com> wrote: > > ---------- Forwarded message ---------- > From: "Rama V" <ramav...@gmail.com> > Date: Sep 15, 2015 7:47 PM > Subject: Re: Transmission error > To: <discuss-gnuradio@gnu.org> > Cc: > > > Please kindly help with the above error > > Thanks, > Dave > On Sep 14, 2015 5:02 PM, "Rama V" <ramav...@gmail.com> wrote: > > I have a small doubt regarding the reception of data packets. I am > attaching a small figure of the command 'uhd_fft' where I mentioned the > frequency and the sampling rate as 250k. The command I have given for this > was > > ./benchmark_tx.py -m qpsk -M 2 --discontinuous -f 2.435G > > I tried to run this and I see an 'U' in the middle of transmission. Is > this why I was not able to receive the packets because I get > > ok = False pktno = 53034 n_rcvd = 1 n_right = 0 > > My PC is Dell Inspiron 15R 5537 and I think it's somewhat a new version. > Do I need to mention any sample rate in the command of benchmark. And also > when I set the sample rate to 250k in my benchmark command, my laptop > freezes and I need to restart it again. Do I need to give a low value? > Please help and excuse for my brevity. > > >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
