[Discuss-gnuradio] BPSK output abnormal
Hi everyone, I try to simulate file transfer using BPSK with block diagram File Source --> PSK Mod --> PSK Demod --> File Sink The block setting is File Source : -file type = .jpg (282,8 kB (282.765 bytes)) -repeat = no -vec length = 1 PSK Mod : -num of constellation = 2 -gray code = yes -diff. encoding = yes -sample/symbol = 2 -excess BW = 0.35 -verbose = off =log = off PSK Demod : -num of constellation = 2 -diff. encoding = yes -sample/symbol = 2 -excess BW = 0.35 -frequency BW = 6.28/100.0 -timing BW = 6.28/100.0 -phase BW = 6.28/100.0 -gray code = yes -verbose = off -log = off File Sink -vec length = 1 -unbuffered = on -append file = overwrite The size of input file = 282,8 kB (282.765 bytes) but the size of output file = 2,3 MB (2.262.066 bytes) What's wrong with my fg? Thank you, Surya Agam ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Software Defined Academy Programme almost ready
Dear List, the programme of the Software Defined Radio Academy on June 27 2015 in Friedrichshafen (sub-conference to HAMRADIO) is almost complete. But it is already now so interesting that I don't want to wait any longer and present the list of talks to you: http://www.sdra-2015.de/pages/programme.html As soon as we have an exact time schedule for the talks (which is not yet fixed), I will send another note. I'll be happy to welcome you to the SDRA if you plan to attend. Please note that you'll get the entire HAMRADIO (biggest European HAM festival) plus the MakerWorld with one single ticket. http://www.hamradio-friedrichshafen.de/ vy73 / br markus dl8rds ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Is it possible to undo my mistake
Thank you all for the help. I ended up installing it from the package manager and now it works fine. Best regards, Carl On 11 May 2015 at 23:14, Marcus Müller wrote: > But if you get hackrf libs through Ubuntu's package manager, do so before > building anything related to HackRF (i.e. before running pybombs, > especially before installing gr-osmosdr); The problem is that a program > links against a specific ABI of a library -- in general, against *exactly* > the same version of the library that was there when the program was being > built. This means that getting hackrf /libhackrf0 from Ubuntus repositories > will not make your version of GNU Radio built before that installation use > that library -- you'll have to recompile gr-osmosdr to get that > functionality. > > In fact, if you just use pyBombs' default setting of installing from deb > if a sufficient version can be found, Hackrf/libhackrf will automatically > be installed from Ubuntu's repos if you > pybombs install gr-osmosdr > > So, my way of doing this would be, on a freshly set up system (with > nothing related to this previously installed): > > * getting pybombs > * (sudo) ./pybombs install gnuradio gr-osmosdr > > and you should get a running system -- Ubuntu 14.04 is probably the most > prolific target for pybombs these days, and the defaults should be "pretty > safe". > > Best regards, > Marcus > > > On 05/11/2015 07:52 PM, West, Nathan wrote: > > You can also get hackrf libs through Ubuntu's package manager. > > Whatever install method you choose it is best to avoid deleting installed > libraries unless you really know what you are doing. > > -Nathan > > On Mon, May 11, 2015 at 12:37 PM, Martin Braun > wrote: > >> Safest for GNU Radio is package manager. Can't speak for HackRF, but you >> can always use PyBOMBS. If you install GNU Radio through apt-get, and >> then HackRF through PyBOMBS, you might need to set GNU Radio as already >> installed in PyBOMBS. >> >> Cheers, >> Martin >> >> On 11.05.2015 10:35, Carl Olsson wrote: >> > Hi all, >> > >> > I couldn't solve my problems so I decided to reinstall Ubuntu 14.04 >> > LTS from the beginning on my hp elitebook 8460p. What is the safest >> > (highest probability of working) way of installing gnuradio (and >> > hackrf tools)? I just need a simple installation. Pybombs, build >> > script, package manager or something else? >> > >> > Best regards, >> > >> > Carl ___ Discuss-gnuradio >> > mailing list Discuss-gnuradio@gnu.org >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > >> >> >> ___ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > > ___ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] How to start and stop recording without exiting the flowgraph
Hi all, I would like to use two filesink blocks to record signals from two USRP:s with MIMO Cable. I am interested in the phase offset of an incoming signal so I first need to calibrate and then start recording. I haven't found how this could be done in an easy way, does anyone have any ideas? To clarify: I would like to start my flowgraph then when I press a button in the GUI start recording and then press the button again and stop recording. Thank you all in advance. Regards Carl ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] BPSK output abnormal
On Sun, May 24, 2015 at 4:54 AM, Surya Agam wrote: > Hi everyone, > > I try to simulate file transfer using BPSK with block diagram > > File Source --> PSK Mod --> PSK Demod --> File Sink > > The block setting is > File Source : > -file type = .jpg (282,8 kB (282.765 bytes)) > -repeat = no > -vec length = 1 > > PSK Mod : > -num of constellation = 2 > -gray code = yes > -diff. encoding = yes > -sample/symbol = 2 > -excess BW = 0.35 > -verbose = off > =log = off > > PSK Demod : > -num of constellation = 2 > -diff. encoding = yes > -sample/symbol = 2 > -excess BW = 0.35 > -frequency BW = 6.28/100.0 > -timing BW = 6.28/100.0 > -phase BW = 6.28/100.0 > -gray code = yes > -verbose = off > -log = off > > File Sink > -vec length = 1 > -unbuffered = on > -append file = overwrite > > The size of input file = 282,8 kB (282.765 bytes) > but the size of output file = 2,3 MB (2.262.066 bytes) > > What's wrong with my fg? > > Thank you, > Surya Agam > The output is unpacked. So each sample only represents a single bit. You have to repack them into 8 bits per byte, but you'll also need to know where to start through some kind of frame synchronization. 282765*8 = 2262120 The rest of the difference is due to delays in the filters. You can zero-pad the input to "push" the samples through. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Choose thread
On Fri, May 22, 2015 at 1:22 PM, marco Ribero wrote: > Hi, > I've a question about thread management..I like the fact that scheduler > can launch blocks in different threads, but I'd like to execute some blocks > inside the same thread(CUDA require to perform all operations from a single > thread)..for the moment I'm using GR_SCHEDULED=STS,but it blocks at all > multithreading..Is it possible to set a thread affinity?(I've looked > https://gnuradio.org/doc/doxygen/page_affinity.html, but it doesn't help) > > Thanks, > marco > Don't use the STS scheduler. It is, after all, the Single-Threaded Scheduler. And setting the thread affinity under that condition is a nop. That will only work with the default TPB scheduler. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] An ISDB-T receiver implementation
On Thu, May 21, 2015 at 2:16 PM, Federico Larroca wrote: > Hi everybody, > > Some months ago we started working on an ISDB-T receiver for GNU Radio. We > have reached a point at which it may be useful for other people, so we > decided to announce to it on the list. The sources may be found on: > https://github.com/git-artes/gr-isdbt. > > Although this is an ongoing work, the receiver is now capable of roughly > two things (examples included): > - Synchronize to the OFDM symbol, equalize, and decode the TMCC signal > (equivalent to the DVB's TPS). This has been tested for mode-3 transmission > (i.e. 8k OFDM) and several CP lengths, which is what we have available > here, but it should work with all the modes and CPs. > - Display online the 1-segment video (i.e. the low definition portion > that is generally sent in ISDB-T). Again, this has been tested with the > transmissions available here in Uruguay. > > We are currently working on displaying the rest of the segments, as well > as debugging and improving the rest of the blocks. > > Any feedback and/or help is more than welcome! > > Best, > Federico > Thanks for letting everyone know, Federico. It's probably get more exposure and use if you put it into PyBOMBS so it can be made available on CGRAN: http://cgran.org/ See Documentation - Submitting OOT Modules Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] How to install RTL-SDR driver in debian jessie
On Thu, May 21, 2015 at 3:05 PM, shaunwang wrote: > Hello > > I installed GNURadio in the Hummingboard which has debian jessie OS. But > the > system cannot detect RTL-SDR. When I type command lsusb, it show Realtek > Semiconductor Corp. RTL2838 DVB-T. > when I type lsmod, nothing show up. And when I run gnuradio companion, no > signal show up in GUI interface. gnuradio companion gives me "Trying to > fill > up 1 missing channel with null source". This means the RTL-SDR is not > pumping anything into the board. I asked my professor, he said this is a > driver issue. but he does not have time to help me. I tried installing > librtlsdr-dev and rtl-sdr package of debian jessie, RTL-SDR still does not > work. Is there any one know how to install RTL-SDR driver in debian jessie > or solve this kind of issue? Thank you a lot! > > Shaun > Have you tried the PyBOMBS method of installing the rtl-sdr, gr-osmosdr, and gnuradio? It's likely the problem is related to the udev rules. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Parameters for Source Block
Got the source block working. Thanks for the help. Is there a standard way to add parameters to a source block? I notice in gnuradio-companion you can right click on the block and it has parameters that are settable for that block. I need to reference external parameters such as frequency and sample rate also. Thx, Y- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] How to start and stop recording without exiting the flowgraph
On 05/24/2015 06:46 PM, Carl Olsson wrote: > Hi all, > > I would like to use two filesink blocks to record signals from two > USRP:s with MIMO Cable. I am interested in the phase offset of an > incoming signal so I first need to calibrate and then start recording. I > haven't found how this could be done in an easy way, does anyone have > any ideas? > > To clarify: > I would like to start my flowgraph then when I press a button in the GUI > start recording and then press the button again and stop recording. Write a small Python block that takes a setter, then input a button state through a QT selector. This block will only allow samples flowing through when you input a certain state. Cheers, M ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
