Re: [Discuss-gnuradio] debugging uhd_corr_and_sync example

Hi, I think this behaviour may be due to the level into the Polyphase Clock Sync block. The block expects a signal amplitude of 1 as explained in [1]. An AGC between the Correlate and Sync and the Polyphase Clock Sync blocks might do the trick. Cheers Ernest [1]

[Discuss-gnuradio] debugging uhd_corr_and_sync example

Hi all, I am not very successful in running the uhd_corr_and_sync_tx/rx.grc example in the gr-digital examples directory (3.7.13.5) using usrps. In an effort to debug it, i merged the two graphs and eliminated the uhd sink/sources (see attached) and so I am running a simulation without the

Re: [Discuss-gnuradio] OFDM Mod Block - how is it working?

On Tue, 09 Jul 2019 at 17:42:11 +0200, lilijobo1 lilijobo1 wrote: > The thing is that I dont really get how the parameters > occupied tones and the FFT length work in that case. > Is the occupied tones equal to the numer of subcarriers? If yes where do get > to know the subcarrier spacing

[Discuss-gnuradio] OFDM Mod Block - how is it working?

Hi,   I'm working with grc and a LimeSDR board and saw that there is the "OFDM Mod" Block available that I thought I could use to generate a broadband signal that is similar to a channel in LTE. In detail I want to generate a signal with a known bandwidth like 5MHz  and analyze how the LimeSDR

Re: [Discuss-gnuradio] JIT integration and undefined symbol

This is just a guess, but the DVB-T Viterbi decoder uses SSE2 intrinsics for performance. In gnuradio/gr-dtv/lib/CMakeLists.txt, the flag "-msse2" is added to CMAKE_CXX_FLAGS. Ron On 7/9/19 05:39, Corentin Basler wrote: Hello everyone, I'm actually doing my bachelor thesis about Just In

[Discuss-gnuradio] Digital pre-distortion

Dear Sir/Madam, I am writing to you regarding the digital pre-distortion technique. I would use this DPD on GNU radio, I read that there is available only a part. How can I do? Is it necessary a particolar hardware? I am using GNU radio on N310 ettus research. Thank you for your time and every

[Discuss-gnuradio] JIT integration and undefined symbol

Hello everyone, I'm actually doing my bachelor thesis about Just In Time compiler and I want to integrate this technology in GNURadio. I've already created OOT module with integrated JIT functionality. I'm now trying to add an in-tree module. I'm trying to do that by copying the dvbt viterbi

[Discuss-gnuradio] [GSoC19] Block header parsing tool: Blog update

Hello everyone, I have updated the blog for the Week 6 updates and the tasks for week 7. Here is the link to the updated Github project. Week 6 updates: - Write unit-tests to check for valid Blocktool Exceptions.

[Discuss-gnuradio] DQPSK /QAM modulation and demodulation from gnu radio tutorial for IQ signal generation.

Hello Guys, I am very much new in gnu radio and trying to do the tutorial that gnuradio published for PSK demodulation. I am using constellation modulator to modulate the signal and demodulate it by constellation demodulator block. I have managed that successfully for 4 sps for psk but now I