Re: [Discuss-gnuradio] Question about sampling rate and center freq

Hi Abhinav, thanks for the sketch; for the next time, screenshots are best done by using GRC's "Screen Capture" functionality, or at least with your operating system's screenshot function. Can't be that hard. Now, I must admit that I really don't undestand the axis in your sketches. These sketche

[Discuss-gnuradio] Question about sampling rate and center freq

Hi all, I want to sample first 250KHz on the channel. I am using the (sampling_with_lowpass.JPG) setup to extract quadrature samples. I have LFRX card where i just use the RX-B pin to extract complex samples from the channel. My question is (question.JPG) how are the two setups different, assumin

Re: [Discuss-gnuradio] ofdm_sync and ofdm_sampler blocks

Hi, Martin Thanks. I will move to the new blocks. But if someone have encountered this kind of problem please let me know. Regards, - Monika On Wed, Apr 27, 2016 at 9:58 PM, Martin Braun wrote: > Monika, > > please be patient on this list. Also, the blocks you mention are very > old and not ac

Re: [Discuss-gnuradio] ofdm_sync and ofdm_sampler blocks

Monika, please be patient on this list. Also, the blocks you mention are very old and not actively developed/maintained. I recommend switching to the ofdm_tx and ofdm_rx blocks. Cheers, Martin On 04/27/2016 04:09 AM, monika bansal wrote: > Please help me with this. > > Thanks. > > Regards, > -

Re: [Discuss-gnuradio] Higher Accuracy Metadata Header?

Hi Michael, just a heads up – that bug was fixed, and the fix was integrated into the "maint" branch of GNU Radio [1]. And since Johnathan merged maint into master yesterday, it's in master, too :) Best regards, Marcus [1] https://github.com/gnuradio/gnuradio/pull/800 On 04/25/2016 04:31 PM, Mar

[Discuss-gnuradio] Call for Participation in the Technical Proceedings of GRCon16

Hi all - The GRCon Organizing Committee is very excited to announce our first Technical Proceedings to accompany GRCon16! The Proceedings will be a publication venue for technical papers in the area of applied radio technology, and will provide a way for authors to create a more complete reference

Re: [Discuss-gnuradio] time tags for transition time using USRPs

Hi Henning, to only answer the first part of your questions: On 04/27/2016 03:22 PM, Henning Bredenberg wrote: > Hi Martin, > > the time tag 'tx_time' tells the USRP when to transmit - so far so > good. So I don't need any delay blocks because the USRP sink realizes > the delay, right? Nearly! In

Re: [Discuss-gnuradio] OS X Tutorial Problem fixed

You're welcome; glad that works! - MLD On Tue, Apr 26, 2016 at 6:08 AM, jim Schimpf wrote: > Thanks to Michael Dickens . The tutorial > problem in OS X I was having is fixed. Deleting the tutorial build > directory, and then starting over using > cmake -DCMAKE_INSTALL_PREFIX=/opt/local ../ for

Re: [Discuss-gnuradio] time tags for transition time using USRPs

Hi Martin, the time tag 'tx_time' tells the USRP when to transmit - so far so good. So I don't need any delay blocks because the USRP sink realizes the delay, right? Assume i want to add a propagation delay of 240ms: Setting 'tx_time' at the begin of the burst to 240ms will realize that?

Re: [Discuss-gnuradio] ofdm_sync and ofdm_sampler blocks

Please help me with this. Thanks. Regards, -monika On Wed, Apr 27, 2016 at 4:37 PM, monika bansal wrote: > Hi, > > I have connected benchmark_tx.py and benchmark_rx.py to make it loopback > mode without USRPs. There is no channel block between the tx and rx chain. > > I checked all blocks in t

[Discuss-gnuradio] ofdm_sync and ofdm_sampler blocks

Hi, I have connected benchmark_tx.py and benchmark_rx.py to make it loopback mode without USRPs. There is no channel block between the tx and rx chain. I checked all blocks in the Transmit chain. All are working as expected. But in Receiver chain i did not understand the output of *ofdm_sync_ml *