Re: [Discuss-gnuradio] Bits inserted at random places

Edwin, can you share some details on the receiver code you're using? -- M On 08/09/2017 06:44 PM, 李博远 wrote: > Hi, > > I have implemented BPSK and OFDM in GNURadio. They are modified from the > examples given, just without those crc32 modules. They work well in > GNURadio. > > However, when I

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Ruediger: (Actually, you probably don't have to double-check $PATH as suggested in step 4, since 'whereis gnuradio' should locate these files for you..) Regards, Kyeong Su Shin On Thu, Aug 10, 2017 at 2:01 PM, Kyeong Su Shin wrote: > Dear Ruediger: > > It could be somewhat

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Ruediger: It could be somewhat tedious, but could you try this? 1. remove GNU Radio installations again (using apt). 2. type in "whereis gnuradio" -> if you found any remaining GNU Radio files, remove them. 3. type in "whereis gnuradio-companion" -> if you found any remaining GNU Radio

Re: [Discuss-gnuradio] qt frequency sink runtime error

... I went to the build directory generated by the build-gnuradio script and uninstalled using "make uninstall". I then used apt-get uninstall gnuradio to remove the package installed with apt-get. As a final step I reinstalled with apt-get install. Unfortunately gnuradio-companion is now not

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Ruediger: Could you try removing all GNU Radio installations except one (that you would use), reboot the system, and then re-build -> re-execute the code? Because I have seen a case where multiple installations of GNU Radio messed up the PATH variable and caused a similar issue.. Regards,

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Marcus and Kyeong Su Shin indeed I used the build-gnuradio script before I installed gnuradio by apt-get. Sorry for not having mentioned that and in fact I did not deinstall after build-gnuradio. Thank you, Ruedi Am 10.08.2017 um 19:27 schrieb Marcus Müller: Hm, ok, I was hoping for

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Ruedi, I am pretty sure that Ubuntu 14.04 does not come with GNU Radio 3.7.11.1, so you cannot simply apt-get it from the official repo. Did you add a PPA or use any other installation methods by any chance? If so, did you remove the previous version of GNU Radio (if you installed it before)

Re: [Discuss-gnuradio] qt frequency sink runtime error

Hm, ok, I was hoping for some parser problems within GRC to produce errorneous configuration of your QT GUI Frequency sink, but nooope. Exactly, byte-wise, the same file as mine. S, there's something crashing in Qt GUI. So, how did you get 3.7.11.1 on Ubuntu 14.04? you say apt-get, but

Re: [Discuss-gnuradio] Explanation on how the preamble is inserted and how the packet is detected

Hi Adhitha, The tx_stage6.grc outputs BPSK packets. If you want to use OFDM, the OFDM examples are good references. To detect OFDM packets, use schmidl & cox OFDM sync module. Anyway, I'm glad that you've got your system going. Regards, Edwin Adhitha Dias 于2017年8月10日周四

Re: [Discuss-gnuradio] qt frequency sink runtime error

... here we are. Thanks, Ruedi Am 10.08.2017 um 18:28 schrieb Marcus Müller: Huh, odd, that looks like it should, and that runs just well on my 3.7.12 (don't remember there being a related bug fix since 11); soo, I'll need to read that couple lines of code in Python that your GRC generates

Re: [Discuss-gnuradio] qt frequency sink runtime error

Huh, odd, that looks like it should, and that runs just well on my 3.7.12 (don't remember there being a related bug fix since 11); soo, I'll need to read that couple lines of code in Python that your GRC generates (and mine doesn't). Can you also share your /tmp/resampler_demo.py ? Thanks!

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Marcus, attached the flow graph as captured. Thanks for your help! Best Regards, Ruedi Am 10.08.2017 um 18:08 schrieb Marcus Müller: Dear Ruedi, That's pretty interesting; could you use GRC's screen capture functionality to share what the flow graph looks like on your machine? I sense

Re: [Discuss-gnuradio] diagnosing overflows

Hi philip, to identify such bottlenecks, it's often a nice clue to know which block consumes the most CPU. I don't know it the Linux perf counters work well on ARM (simply haven't tried), but if they do: There's a program called perf. Usage in short sudo sysctl kernel.perf_event_paranoid=-1 perf

Re: [Discuss-gnuradio] [GRCon17] Room Block Update

Oops, should have read the *11th* of August (tomorrow). Thanks, Marcus, for pointing out my typo! Cheers, Ben On Aug 10, 2017 11:40, "Ben Hilburn" wrote: > Hi all - > > This is a heads-up that our negotiated room rate (which matches the US > Federal Government's

Re: [Discuss-gnuradio] qt frequency sink runtime error

Dear Ruedi, That's pretty interesting; could you use GRC's screen capture functionality to share what the flow graph looks like on your machine? I sense GNU Radio bugs! Best regards, Marcus On 08/10/2017 05:54 PM, Ruediger Bauernschmitt wrote: > Hello, > > I'm using gnuradio-companion 3.7.11.1

[Discuss-gnuradio] qt frequency sink runtime error

Hello, I'm using gnuradio-companion 3.7.11.1 installed using apt-get on Ubuntu 14.04.5 LTS running on a Lenovo T60. The dialtone example works fine but once I'm using the frequency sink like e.g. in the resampler_demo.grc I get the following Runtime Error: Generating:

[Discuss-gnuradio] [GRCon17] Room Block Update

Hi all - This is a heads-up that our negotiated room rate (which matches the US Federal Government's per-diem rate for San Diego) and room block is no longer guaranteed by the hotel as of EOB this Friday, the 10th of August. If you haven't yet booked your rooms for GRCon, please do so soon!