Re: Have you used radioconda to install GNU Radio and radio related software? We'd like to hear from you.
Hello all, A friendly request/reminder - if you've used the radioconda installer, we're interested in your feedback: https://saneuxdesign.survey.fm/radioconda-survey We're particularly interested in hearing from amateur radio, and educational (i.e. using GR to teach students) users, but everyone is welcome to take part. It takes only a few minutes and we'd appreciate your input. If you've got any questions, let me know. Thanks, Bernard On 31/10/2022 21:04, ei8...@ei8fdb.org wrote: Hello all, Ryan Volz and I have put together a short (6 questions) survey to understand usage of Radioconda - the Windows/Mac OS/Linux installer for GNU Radio and other radio related software packages, and also to get suggestions on what other software to package with Radioconda. The Radioconda installer is used to install GNU Radio, gqrx, gr-satellites and other gr-* packages, and also install support for SDR devices/ device libraries like ADALM-PLUTO, Airspy, BladeRF, RTL-SDR, Ettus USRPs. If you've used it, we'd be very grateful if you'd help us out by filling out the survey: https://saneuxdesign.survey.fm/radioconda-survey There's more info about the survey on that link. If you've got any questions, let me know. Thanks in advance, Bernard
Re: Query about OFDM Receiver with USRP
On 17/11/2022 10:23, Al Amiri, Wesam (waalamiri42) wrote: Hello, I am working on the implementation of OFDM TX and RX using USRP N210 and GNURadio. I used the the grc flow graphs done by GNURadio workshops and I was able to receive the OFDM signal and demodulate it. Also, I connected a constellation sink to the Palyoad Stream Virtual Source at the RX side (after demodulation), and I got 4 constellation points which is corresponding to the QPSK similar to the Tx cosntellation. However, when I removed the Smidl and Cox synchronization to check the phase rotation from the CFO (please see attached) , I still have the same 4 constellation points without phase rotation. Do you know why this happens? You haven't described your physical setup, but if you have TX looped-back to RX, there won't be any phase rotation since the TX and RX are both phase-locked to the same master oscillator on-board the N210. In "real-life" scenarios, of course, there will be phase rotation between the TX and RX. One more thing please, is there any way to extract a certain subcarrier from the FFT at the receiver side. I need to do some post processing on one of the subcarriers? Regards, Wesam Al Amiri
